A.G Pandurangan - Academia.edu (original) (raw)

Papers by A.G Pandurangan

Research paper thumbnail of Clonal propagation through stem cuttings and air layering in Dysoxylum malabaricum Bedd. ex Hiern. - an endemic and rare tree species of the Western Ghats

Indian Journal of Forestry

Clonal propagation through stem cuttings and air layering in Dysoxylum malabaricum Bedd. ex Hiern... more Clonal propagation through stem cuttings and air layering in Dysoxylum malabaricum Bedd. ex Hiern. is presented here. The highest rooting of 80% was achieved with the use of IBA -1000 ppm from tender stem cuttings of 10-15 years old plant and air layering success was also found to be 90% by the use of IBA 1000 ppm from same age of plants used for stem rooting.

Research paper thumbnail of Seed storage studies on Gluta travancorica Bedd. - An endemic and threatened tree of Southern Western Ghats

Indian Journal of Forestry, 2013

The seeds of Gluta travancorica, tend to lose its viability within a month under ambient conditio... more The seeds of Gluta travancorica, tend to lose its viability within a month under ambient conditions and the sensitivity of the seeds towards desiccation and chilling environments indicating the recalcitrant nature. The seeds with initial 50% moisture content could remain viable upto 17 months by maintaining the critical moisture content between 40 - 42% during storage in controlled conditions, 20 ± 2º C & 40% RH. The storage practice thus standardized could be adopted as a promising method for the germplasm preservation and subsequent multiplication for the conservation and sustainable utilization of the species for the posterity.

Research paper thumbnail of Asystasia gangetica var. krishnae (Acanthaceae): A new variety from Kerala, India

Rheedea, 2019

Asystasia gangetica var. krishnae Dhruvan, Pandur. & Mohanan, is described as a new variety from ... more Asystasia gangetica var. krishnae Dhruvan, Pandur. & Mohanan, is described as a new variety from the southern Western Ghats of Kerala.

Research paper thumbnail of PROCEEDINGS Diskusi Teknologi Pangan VI Tanggal 19 dan 20 Maret 1985

Balai Besar Penelitian dan Pengembangan Industri Hasil Pertanian, 1985

Research paper thumbnail of Rediscovery of Mallotus intercedens (Euphorbiaceae)

TAPROBANICA: The Journal of Asian Biodiversity, 2013

Research paper thumbnail of Rediscovery of Impatiens munnarensis Barnes: A strict endemic balsam of Southern-Western Ghats

Bangladesh Journal of Botany, 2015

An endemic wild balsam, Impatiens munnarensis Barnes restricted to Idukki district of Kerala, Ind... more An endemic wild balsam, Impatiens munnarensis Barnes restricted to Idukki district of Kerala, India has been rediscovered from a new locality Megamalai hills, Tamil Nadu, India after 78 years. The detailed description of the taxa is provided in the presented paper. DOI: http://dx.doi.org/10.3329/bjb.v43i2.21678 Bangladesh J. Bot. 43(2): 227-229, 2014 (September)

Research paper thumbnail of Analysis of Genetic Diversity in <i>Poeciloneuron pauciflorum</i> Bedd.―An Endemic Tree Species from the Western Ghats of India

American Journal of Plant Sciences, 2011

Poeciloneuron pauciflorum is a narrow endemic having highly restricted distribution in the southe... more Poeciloneuron pauciflorum is a narrow endemic having highly restricted distribution in the southern-western Ghats region of India. 18 accessions of P. pauciflorum collected from four different locations were analyzed for genetic variation using 20 random primers. Out of 141 amplicons generated, 130 of them were polymorphic (92.20% polymorphism). Contrary to the general concept of low genetic variation associated with endemic plant species, P. pauciflorum exhibits high genetic diversity as the similarity index value based on Nei & Li's similarity coefficient ranges from 0.36 to 0.95 with mean GS = 0.72 and Shannon's information measure (0.43). Cluster analysis showed grouping of all accessions from the State of Tamil Nadu into two major clusters with few outliers while those from the State of Kerala also clustered with them. Accessions from Kalliankadu forest segment harbors maximum diversity as indicated by various genetic diversity indices like h, I, Ht, Hs, Gst, PL and hence this site is recommended for in situ conservation of this narrow endemic. The main factors responsible for the high level of genetic diversity among accessions are probably related to the reproductive isolation and ecological breadth. The strong genetic variability among accessions indicates that the management for the conservation of the genetic diversity in P. pauciflorum should aim to preserve every accession. The present study assumes significance as it negotiates endemism and genetic variation in tree species, a global phenomenon having wide implications in species diversity and conservation.

Research paper thumbnail of Rediscovery of Henckelia macrostachya (Gesneriaceae) from Kerala, India

TAPROBANICA: The Journal of Asian Biodiversity, 2013

Research paper thumbnail of Cyperus surinamensis Rottbøll, 1772 (Cyperaceae): a new record for India

TAPROBANICA: The Journal of Asian Biodiversity, 2013

is the second largest genus in Cyperaceae Jussieu with some 600 species mostly distributed in the... more is the second largest genus in Cyperaceae Jussieu with some 600 species mostly distributed in the tropics and subtropics of the world (Govaerts & Simpson, 2007). Of these, 70 species occur in India (Prasad & Singh, 2002). They usually grow as part of wet land vegetation, mud banks, open areas, etc., and yet they get little attention from the floristic workers even though they contribute significantly to the economic and ecologic stability of the ecosystem/region. While exploring Pathiramanal Island and its environs in the Vembanad Lake area of the Alappuzha District, Kerala, in 2010, the authors discovered an interesting Cyperus along the canal sides of Kayippuram. In 2011, the plant was collected again from the coastal region of Parippally, Kollam District adjacent to Alappuzha. On critical examination and perusal of literature, the specimens were identified as Cyperus surinamensis Rottbøll hither to known from the New World and recently reported as naturalized in China, Taiwan and Indonesia (Chen et al., 2009; Dai Lunkai, 2010). Thus, our collections represent a new record for India, and a detailed description, illustration, photographs, and specimen citations are provided for easy identification.

Research paper thumbnail of Some rare and interesting angiosperm taxa from the forests of idukki hydro electric project area kerala india

Journal of economic and taxonomic botany, Jun 11, 1984

Research paper thumbnail of Research article PIPER HAMILTONII C. DC. (PIPERACEAE) -A NEW DISTRIBUTIONAL RECORD FOR PENINSULAR INDIA

Piper hamiltonii C. DC. (Piperaceae) thought to be endemic to North Eastern Himalaya and Andaman ... more Piper hamiltonii C. DC. (Piperaceae) thought to be endemic to North Eastern Himalaya and Andaman Islands are recorded for the first time from Western Ghats region of Peninsular India. The disjunct distribution pattern of this species in dissimilar geographic areas deserves scientific scrutiny. Hence, a detailed description, photographs and other relevant notes are provided for easy recognition of the taxon.

Research paper thumbnail of Reproductive biology of Gluta travancorica Bedd. an endemic and threatened tree from the Southern Western Ghats, India

Research paper thumbnail of Microsoft Word - 004-Pandurangan.doc

ABSTRACT: Piper hamiltonii C. DC. (Piperaceae) thought to be endemic to North Eastern Himalaya an... more ABSTRACT: Piper hamiltonii C. DC. (Piperaceae) thought to be endemic to North Eastern Himalaya and Andaman Islands are recorded for the first time from Western Ghats region of Peninsular India. The disjunct distribution pattern of this species in dissimilar geographic areas deserves scientific scrutiny. Hence, a detailed description, photographs and other relevant notes are provided for easy recognition of the taxon.

Research paper thumbnail of Carex nilagirica(Cyperaceae), a new sedge species from the Nilgiri Biosphere Reserve, India

Webbia, 2016

Carex nilagirica (Cyperaceae) is described as a new species from Nilgiri Biosphere Reserve, Weste... more Carex nilagirica (Cyperaceae) is described as a new species from Nilgiri Biosphere Reserve, Western Ghats, India. The new species belonging to sect. Graciles distinctly differs from related species Carex longipes D. Don. ex Tilloch & Taylor by its smaller size, shorter leaf blades, nature of inflorescence form and number of spikes. A detailed description, phenology, colour plates, distribution and taxonomic notes are provided.

Research paper thumbnail of Occurrence of Sonerila barnesii C.E.C. Fischer (Melastomataceae) – A little known Endemic and Endangered species of Western Ghats

Indian Journal of Forestry, 2013

Sonerila barnesii C.E.C. Fischer, an endemic species of the Southern Western Ghats, is rediscover... more Sonerila barnesii C.E.C. Fischer, an endemic species of the Southern Western Ghats, is rediscovered from Mankulam forest areas of Idukki district after its first collection quite away from the type locality.

Research paper thumbnail of A study on the garden escaped exotics of Thiruvananthapuram district, Kerala

Journal of economic and taxonomic botany, 2008

Research paper thumbnail of Mitracarpus hirtus var. sessilis var. nov. (Rubiaceae) from India

TAPROBANICA: The Journal of Asian Biodiversity, 2014

A new variety of Mitracarpus hirtus (L.) DC. is described and illustrated. It forms the second ne... more A new variety of Mitracarpus hirtus (L.) DC. is described and illustrated. It forms the second new taxon of the genus from the Old World. Mitracarpus hirtus (L.) DC. var. sessilis Dhruvan, Pandur., and Mohanan var. nov. differs from Mitracarpus hirtus (L.) DC. var. hirtus by its sessile, broader, denser flowers in larger glomerules, two larger, oblong or oblong-elliptic, calycine calyx lobes with a mucronate apex, two shorter, linear-lanceolate, hyaline calyx lobes, capsules with S-shaped bent calyx lobes that lack aristate tip, and by grayish-brown seeds.

Research paper thumbnail of Corosolic acid content and SSR markers in Lagerstroemia speciosa (L.) Pers.: a comparative analysis among populations across the Southern Western Ghats of India

Phytochemistry, 2014

Lagerstroemia speciosa commonly known as 'Banaba' is native of south-east Asia which exhi... more Lagerstroemia speciosa commonly known as 'Banaba' is native of south-east Asia which exhibits both horticultural and therapeutic value. The anti-diabetic and anti-obese property of the tree is attributed to corosolic acid (CRA)-a pentacyclic triterpene seen predominantly in the mature leaves. Although there are studies on either chemical or genetic variation in L. speciosa from different regions, none have dealt with their association to discuss the formation of chemical diversity. For the first time, we have analyzed CRA content in 12 natural populations corresponding to 42 samples seen in the Southern Western Ghats (SWG) using chromatography techniques and genetic variation estimated using SSR markers. Significant variation in percentage distribution of CRA ranging from 0.005% to 0.868% dr.wt. was recorded wherein populations from the north SWG contain relatively more active principle (mean=0.321%) than their counterparts in the south (mean=0.064%). Similarly, SSR data sho...

Research paper thumbnail of Impatiens kulamavuensis, a New Species of Balsaminaceae from India

Novon, 1995

Impatiens kulamavuensis, a distinct new species from India allied to I. parasitica Beddome, is de... more Impatiens kulamavuensis, a distinct new species from India allied to I. parasitica Beddome, is described. Impatiens kulamavuensis A. G. Pandurangan & V. J. Nair, sp. nov. TYPE: India. Kerala: Idukki Dist., Meenmutty-Kulamavu, + 700 m, 6 Oct. 1983, A. G. Pandurangan 82037 (holotype, CAL; isotype, MH). Figure 1. Ab Impatiente parasitica Beddome caulibus stoloniferis, foliis glandulosis, nervis lateralibus non manifestis; sepalis lateralibus et petalis pilosis; stigmatibus curvatis, sericeo-pubescentibus et seminibus pyriformibus differt. Epiphytic stoloniferous herbs; stems short, stout, fleshy, less than 1 cm long. Leaves alternate; petioles gland-dotted, 2-7 mm long, with 2 prominent stipitate glands near the base of the blade; lamina ovatelanceolate, 2-5.5 x 1.5-2.5 cm, membranous, gland-dotted above, glabrous below, deep green, the base cuneate, the apex acuminate, margins entire to obscurely crenulate-serrate, crenules 2-4 mm apart; lateral veins 4-6 pairs, indistinct. Inflorescence a 1-3-flowered raceme; peduncles 2.5-5 cm long; pedicels 3.5-5 cm long. Flowers greenish yellow. Lateral sepals linear, 8-10 x 2-3 mm, hairy outside, glabrous inside. Lower sepal saccate, compressed, 12-15 x 5-7 mm, glabrous; spurs strongly curved, 7-8 x 3-5 mm, tip obtuse. Dorsal petal erect, orbicular to ovate, 6-7 x 8-9 mm, hairy at base. Lateral petals united close to the base, 3-lobed, upper lobes smaller in size, 7-8 x 9-10 mm. Androecium 3-3.5 mm long. Ovary ellipsoid, glabrous, 5-6 x 3-3.5 mm; ovules many, 1-seriate; style short; stigma curved, with an obtuse tip, silky pubescent. Capsules ellipsoid, 10-12 x 4-5 mm, glabrous. Seeds pear-shaped, smooth. Flowering and fruiting October-December. Distribution. Endemic to Meenmutty-Kulamavu, Idukki Dist., Kerala, India. TABLE 1. Comparison of major differences between Impatiens parasitica Beddome and Impatiens kulamavuensis A. G. Pandurangan & V. J. Nair. I. parasitica I. kulamavuensis Stems 10-12 cm long, not stoloniferous, moniliform Leaves glabrous on both surfaces or glabrescent above; lateral nerves prominent Lateral sepals glabrous outside, glandular inside at base Petals glanduliferous inside at base Stigmas straight; stigmatic lobes 5-toothed, not pubescent Seeds rounded to ellipsoid Stems less than 1 cm long, stoloniferous, not moniliform Leaves glanduliferous above, glabrous beneath; lateral nerves indistinct Lateral sepals hairy outside, glabrous inside Petals hairy inside at base Stigmas curved; lobes not 5-toothed, obtuse, silky pubescent Seeds pear-shaped Habitat and ecology. Epiphytic herbs, growing on moss-clad tree trunks at an altitude of 600-700 m. The host trees are Elaeocarpus tuberculatus Roxburgh and Pygium wightiana Blume. Impatiens kulamavuensis was collected in the Idukki hydroelectric project area, Kerala. It is allied to I. parasitica Beddome, but differs in the characters listed in Table 1. Paratype. INDIA. Kerala: Idukki dist., Meenmutty, ? 600 m, 30 Dec. 1983, A. G. Pandurangan 62585 (MH). Acknowledgments. We thank N. P. Balakrishnan, Joint Director, and N. C. Nair, former Joint Director, Botanical Survey of India, for help and encouragement. NovoN 5: 57-58. 1995. This content downloaded from 207.46.13.146 on Tue, 23 Aug 2016 04:00:34 UTC All use subject to http://about.jstor.org/terms

Research paper thumbnail of Antistrophe glabra - a new species of Myrsinaceae from India

Nordic Journal of Botany, 1997

Research paper thumbnail of Clonal propagation through stem cuttings and air layering in Dysoxylum malabaricum Bedd. ex Hiern. - an endemic and rare tree species of the Western Ghats

Indian Journal of Forestry

Clonal propagation through stem cuttings and air layering in Dysoxylum malabaricum Bedd. ex Hiern... more Clonal propagation through stem cuttings and air layering in Dysoxylum malabaricum Bedd. ex Hiern. is presented here. The highest rooting of 80% was achieved with the use of IBA -1000 ppm from tender stem cuttings of 10-15 years old plant and air layering success was also found to be 90% by the use of IBA 1000 ppm from same age of plants used for stem rooting.

Research paper thumbnail of Seed storage studies on Gluta travancorica Bedd. - An endemic and threatened tree of Southern Western Ghats

Indian Journal of Forestry, 2013

The seeds of Gluta travancorica, tend to lose its viability within a month under ambient conditio... more The seeds of Gluta travancorica, tend to lose its viability within a month under ambient conditions and the sensitivity of the seeds towards desiccation and chilling environments indicating the recalcitrant nature. The seeds with initial 50% moisture content could remain viable upto 17 months by maintaining the critical moisture content between 40 - 42% during storage in controlled conditions, 20 ± 2º C & 40% RH. The storage practice thus standardized could be adopted as a promising method for the germplasm preservation and subsequent multiplication for the conservation and sustainable utilization of the species for the posterity.

Research paper thumbnail of Asystasia gangetica var. krishnae (Acanthaceae): A new variety from Kerala, India

Rheedea, 2019

Asystasia gangetica var. krishnae Dhruvan, Pandur. & Mohanan, is described as a new variety from ... more Asystasia gangetica var. krishnae Dhruvan, Pandur. & Mohanan, is described as a new variety from the southern Western Ghats of Kerala.

Research paper thumbnail of PROCEEDINGS Diskusi Teknologi Pangan VI Tanggal 19 dan 20 Maret 1985

Balai Besar Penelitian dan Pengembangan Industri Hasil Pertanian, 1985

Research paper thumbnail of Rediscovery of Mallotus intercedens (Euphorbiaceae)

TAPROBANICA: The Journal of Asian Biodiversity, 2013

Research paper thumbnail of Rediscovery of Impatiens munnarensis Barnes: A strict endemic balsam of Southern-Western Ghats

Bangladesh Journal of Botany, 2015

An endemic wild balsam, Impatiens munnarensis Barnes restricted to Idukki district of Kerala, Ind... more An endemic wild balsam, Impatiens munnarensis Barnes restricted to Idukki district of Kerala, India has been rediscovered from a new locality Megamalai hills, Tamil Nadu, India after 78 years. The detailed description of the taxa is provided in the presented paper. DOI: http://dx.doi.org/10.3329/bjb.v43i2.21678 Bangladesh J. Bot. 43(2): 227-229, 2014 (September)

Research paper thumbnail of Analysis of Genetic Diversity in <i>Poeciloneuron pauciflorum</i> Bedd.―An Endemic Tree Species from the Western Ghats of India

American Journal of Plant Sciences, 2011

Poeciloneuron pauciflorum is a narrow endemic having highly restricted distribution in the southe... more Poeciloneuron pauciflorum is a narrow endemic having highly restricted distribution in the southern-western Ghats region of India. 18 accessions of P. pauciflorum collected from four different locations were analyzed for genetic variation using 20 random primers. Out of 141 amplicons generated, 130 of them were polymorphic (92.20% polymorphism). Contrary to the general concept of low genetic variation associated with endemic plant species, P. pauciflorum exhibits high genetic diversity as the similarity index value based on Nei & Li's similarity coefficient ranges from 0.36 to 0.95 with mean GS = 0.72 and Shannon's information measure (0.43). Cluster analysis showed grouping of all accessions from the State of Tamil Nadu into two major clusters with few outliers while those from the State of Kerala also clustered with them. Accessions from Kalliankadu forest segment harbors maximum diversity as indicated by various genetic diversity indices like h, I, Ht, Hs, Gst, PL and hence this site is recommended for in situ conservation of this narrow endemic. The main factors responsible for the high level of genetic diversity among accessions are probably related to the reproductive isolation and ecological breadth. The strong genetic variability among accessions indicates that the management for the conservation of the genetic diversity in P. pauciflorum should aim to preserve every accession. The present study assumes significance as it negotiates endemism and genetic variation in tree species, a global phenomenon having wide implications in species diversity and conservation.

Research paper thumbnail of Rediscovery of Henckelia macrostachya (Gesneriaceae) from Kerala, India

TAPROBANICA: The Journal of Asian Biodiversity, 2013

Research paper thumbnail of Cyperus surinamensis Rottbøll, 1772 (Cyperaceae): a new record for India

TAPROBANICA: The Journal of Asian Biodiversity, 2013

is the second largest genus in Cyperaceae Jussieu with some 600 species mostly distributed in the... more is the second largest genus in Cyperaceae Jussieu with some 600 species mostly distributed in the tropics and subtropics of the world (Govaerts & Simpson, 2007). Of these, 70 species occur in India (Prasad & Singh, 2002). They usually grow as part of wet land vegetation, mud banks, open areas, etc., and yet they get little attention from the floristic workers even though they contribute significantly to the economic and ecologic stability of the ecosystem/region. While exploring Pathiramanal Island and its environs in the Vembanad Lake area of the Alappuzha District, Kerala, in 2010, the authors discovered an interesting Cyperus along the canal sides of Kayippuram. In 2011, the plant was collected again from the coastal region of Parippally, Kollam District adjacent to Alappuzha. On critical examination and perusal of literature, the specimens were identified as Cyperus surinamensis Rottbøll hither to known from the New World and recently reported as naturalized in China, Taiwan and Indonesia (Chen et al., 2009; Dai Lunkai, 2010). Thus, our collections represent a new record for India, and a detailed description, illustration, photographs, and specimen citations are provided for easy identification.

Research paper thumbnail of Some rare and interesting angiosperm taxa from the forests of idukki hydro electric project area kerala india

Journal of economic and taxonomic botany, Jun 11, 1984

Research paper thumbnail of Research article PIPER HAMILTONII C. DC. (PIPERACEAE) -A NEW DISTRIBUTIONAL RECORD FOR PENINSULAR INDIA

Piper hamiltonii C. DC. (Piperaceae) thought to be endemic to North Eastern Himalaya and Andaman ... more Piper hamiltonii C. DC. (Piperaceae) thought to be endemic to North Eastern Himalaya and Andaman Islands are recorded for the first time from Western Ghats region of Peninsular India. The disjunct distribution pattern of this species in dissimilar geographic areas deserves scientific scrutiny. Hence, a detailed description, photographs and other relevant notes are provided for easy recognition of the taxon.

Research paper thumbnail of Reproductive biology of Gluta travancorica Bedd. an endemic and threatened tree from the Southern Western Ghats, India

Research paper thumbnail of Microsoft Word - 004-Pandurangan.doc

ABSTRACT: Piper hamiltonii C. DC. (Piperaceae) thought to be endemic to North Eastern Himalaya an... more ABSTRACT: Piper hamiltonii C. DC. (Piperaceae) thought to be endemic to North Eastern Himalaya and Andaman Islands are recorded for the first time from Western Ghats region of Peninsular India. The disjunct distribution pattern of this species in dissimilar geographic areas deserves scientific scrutiny. Hence, a detailed description, photographs and other relevant notes are provided for easy recognition of the taxon.

Research paper thumbnail of Carex nilagirica(Cyperaceae), a new sedge species from the Nilgiri Biosphere Reserve, India

Webbia, 2016

Carex nilagirica (Cyperaceae) is described as a new species from Nilgiri Biosphere Reserve, Weste... more Carex nilagirica (Cyperaceae) is described as a new species from Nilgiri Biosphere Reserve, Western Ghats, India. The new species belonging to sect. Graciles distinctly differs from related species Carex longipes D. Don. ex Tilloch & Taylor by its smaller size, shorter leaf blades, nature of inflorescence form and number of spikes. A detailed description, phenology, colour plates, distribution and taxonomic notes are provided.

Research paper thumbnail of Occurrence of Sonerila barnesii C.E.C. Fischer (Melastomataceae) – A little known Endemic and Endangered species of Western Ghats

Indian Journal of Forestry, 2013

Sonerila barnesii C.E.C. Fischer, an endemic species of the Southern Western Ghats, is rediscover... more Sonerila barnesii C.E.C. Fischer, an endemic species of the Southern Western Ghats, is rediscovered from Mankulam forest areas of Idukki district after its first collection quite away from the type locality.

Research paper thumbnail of A study on the garden escaped exotics of Thiruvananthapuram district, Kerala

Journal of economic and taxonomic botany, 2008

Research paper thumbnail of Mitracarpus hirtus var. sessilis var. nov. (Rubiaceae) from India

TAPROBANICA: The Journal of Asian Biodiversity, 2014

A new variety of Mitracarpus hirtus (L.) DC. is described and illustrated. It forms the second ne... more A new variety of Mitracarpus hirtus (L.) DC. is described and illustrated. It forms the second new taxon of the genus from the Old World. Mitracarpus hirtus (L.) DC. var. sessilis Dhruvan, Pandur., and Mohanan var. nov. differs from Mitracarpus hirtus (L.) DC. var. hirtus by its sessile, broader, denser flowers in larger glomerules, two larger, oblong or oblong-elliptic, calycine calyx lobes with a mucronate apex, two shorter, linear-lanceolate, hyaline calyx lobes, capsules with S-shaped bent calyx lobes that lack aristate tip, and by grayish-brown seeds.

Research paper thumbnail of Corosolic acid content and SSR markers in Lagerstroemia speciosa (L.) Pers.: a comparative analysis among populations across the Southern Western Ghats of India

Phytochemistry, 2014

Lagerstroemia speciosa commonly known as 'Banaba' is native of south-east Asia which exhi... more Lagerstroemia speciosa commonly known as 'Banaba' is native of south-east Asia which exhibits both horticultural and therapeutic value. The anti-diabetic and anti-obese property of the tree is attributed to corosolic acid (CRA)-a pentacyclic triterpene seen predominantly in the mature leaves. Although there are studies on either chemical or genetic variation in L. speciosa from different regions, none have dealt with their association to discuss the formation of chemical diversity. For the first time, we have analyzed CRA content in 12 natural populations corresponding to 42 samples seen in the Southern Western Ghats (SWG) using chromatography techniques and genetic variation estimated using SSR markers. Significant variation in percentage distribution of CRA ranging from 0.005% to 0.868% dr.wt. was recorded wherein populations from the north SWG contain relatively more active principle (mean=0.321%) than their counterparts in the south (mean=0.064%). Similarly, SSR data sho...

Research paper thumbnail of Impatiens kulamavuensis, a New Species of Balsaminaceae from India

Novon, 1995

Impatiens kulamavuensis, a distinct new species from India allied to I. parasitica Beddome, is de... more Impatiens kulamavuensis, a distinct new species from India allied to I. parasitica Beddome, is described. Impatiens kulamavuensis A. G. Pandurangan & V. J. Nair, sp. nov. TYPE: India. Kerala: Idukki Dist., Meenmutty-Kulamavu, + 700 m, 6 Oct. 1983, A. G. Pandurangan 82037 (holotype, CAL; isotype, MH). Figure 1. Ab Impatiente parasitica Beddome caulibus stoloniferis, foliis glandulosis, nervis lateralibus non manifestis; sepalis lateralibus et petalis pilosis; stigmatibus curvatis, sericeo-pubescentibus et seminibus pyriformibus differt. Epiphytic stoloniferous herbs; stems short, stout, fleshy, less than 1 cm long. Leaves alternate; petioles gland-dotted, 2-7 mm long, with 2 prominent stipitate glands near the base of the blade; lamina ovatelanceolate, 2-5.5 x 1.5-2.5 cm, membranous, gland-dotted above, glabrous below, deep green, the base cuneate, the apex acuminate, margins entire to obscurely crenulate-serrate, crenules 2-4 mm apart; lateral veins 4-6 pairs, indistinct. Inflorescence a 1-3-flowered raceme; peduncles 2.5-5 cm long; pedicels 3.5-5 cm long. Flowers greenish yellow. Lateral sepals linear, 8-10 x 2-3 mm, hairy outside, glabrous inside. Lower sepal saccate, compressed, 12-15 x 5-7 mm, glabrous; spurs strongly curved, 7-8 x 3-5 mm, tip obtuse. Dorsal petal erect, orbicular to ovate, 6-7 x 8-9 mm, hairy at base. Lateral petals united close to the base, 3-lobed, upper lobes smaller in size, 7-8 x 9-10 mm. Androecium 3-3.5 mm long. Ovary ellipsoid, glabrous, 5-6 x 3-3.5 mm; ovules many, 1-seriate; style short; stigma curved, with an obtuse tip, silky pubescent. Capsules ellipsoid, 10-12 x 4-5 mm, glabrous. Seeds pear-shaped, smooth. Flowering and fruiting October-December. Distribution. Endemic to Meenmutty-Kulamavu, Idukki Dist., Kerala, India. TABLE 1. Comparison of major differences between Impatiens parasitica Beddome and Impatiens kulamavuensis A. G. Pandurangan & V. J. Nair. I. parasitica I. kulamavuensis Stems 10-12 cm long, not stoloniferous, moniliform Leaves glabrous on both surfaces or glabrescent above; lateral nerves prominent Lateral sepals glabrous outside, glandular inside at base Petals glanduliferous inside at base Stigmas straight; stigmatic lobes 5-toothed, not pubescent Seeds rounded to ellipsoid Stems less than 1 cm long, stoloniferous, not moniliform Leaves glanduliferous above, glabrous beneath; lateral nerves indistinct Lateral sepals hairy outside, glabrous inside Petals hairy inside at base Stigmas curved; lobes not 5-toothed, obtuse, silky pubescent Seeds pear-shaped Habitat and ecology. Epiphytic herbs, growing on moss-clad tree trunks at an altitude of 600-700 m. The host trees are Elaeocarpus tuberculatus Roxburgh and Pygium wightiana Blume. Impatiens kulamavuensis was collected in the Idukki hydroelectric project area, Kerala. It is allied to I. parasitica Beddome, but differs in the characters listed in Table 1. Paratype. INDIA. Kerala: Idukki dist., Meenmutty, ? 600 m, 30 Dec. 1983, A. G. Pandurangan 62585 (MH). Acknowledgments. We thank N. P. Balakrishnan, Joint Director, and N. C. Nair, former Joint Director, Botanical Survey of India, for help and encouragement. NovoN 5: 57-58. 1995. This content downloaded from 207.46.13.146 on Tue, 23 Aug 2016 04:00:34 UTC All use subject to http://about.jstor.org/terms

Research paper thumbnail of Antistrophe glabra - a new species of Myrsinaceae from India

Nordic Journal of Botany, 1997