Taxonomic redefinition of Bupleurum pauciradiatum and B. wolffianum (Apiaceae) (original) (raw)
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Peucedanum obtusifolium (Apiaceae), a new record for the Bulgarian flora
Phytologia Balcanica: International Journal of Balkan Flora and Vegetation, 2016
Peucedanum obtusifolium is reported for the first time for the Bulgarian flora. So far it has been known only from the maritime sands of the southwestern coastline of the Black Sea in NW Turkey. Peucedanum obtusifolium from the seashore of Bulgaria has been misidentified as P. arenarium subsp. arenarium. Comparison of the important morphological characters of P. arenarium subsp. arenarium and P. obtusifolium, map of the distribution of the latter species and some comments are presented in this article.
Taxonomic status of Bupleurum (Apiaceae) in outer hills of Kashmir Himalayas, India
Journal of Biology and Earth Sciences, 2012
The genus Bupleurum is perennial rhizomatous herbs, recognized by simple leaves, conspicuous bracts and bractlets, often shows a great deal of variation in morphological characteristics. The genus is well developed in temperate and alpine zones of Kashmir Himalayas and other lesser Himalayan ranges of Jammu and Kashmir State. A key to the species, brief description, flowering and fruiting periods are given. The approximate elevation, distribution of species in the region and illustrations of selected species are provided. Material and Methods: The present communication is based on the surveys conducted between 1 990 and 2007. The speciemens were mounted on the herbarium sheets and studied in the laboratory with the help of floristic literature. Results: As many as 1 0 species of genus Bupleurum have been recognized, from the different climatic zones of outer hills of Kashmir Himalayas of Jammu and Kashmir State. Conclusion: The report is first of its kind being communicated from the State of Jammu and Kashmir. Ten species of Bupleurum are described.
Plant Diversity and Evolution, …, 2010
Stepanova, A.V. & Oskolski, A. A.: Wood anatomy of Bupleurum L. (Apioideae, Apiaceae) in relation to habit, phylogenetic relationships, and infrageneric taxonomy. -Plant Div. Evol. 128: 501-516. 2010. -ISSN 1869-6155. The structure of secondary xylem in perennial shoots of 20 species of Bupleurum (Apioideae, Apiaceae) representing different habits, viz. shrubs (B. fruticosum L., B. foliosum Salzm, B. gibraltaricum Lam.), a dwarf shrub (B. dianthifolium Guss.), semishrubs (B. acutifolium Boiss., B. atlanticum Murb. B. fruticescens L.), a cushion plant (B. spinosum Gonan), and perennial herbs (B. americanum Coult. et Rose, B. angulosum L., B. candollei Wall., B. commelynoideum Boiss., B. exaltatum M.B., B. longifolium L., B. longiradiatum Turch., B. marginatum Wall. ex DC, B. mundtii Cham. and Schldl., B. petraeum L., B. rigidum L., B. stellatum L.) is examined. The results confirm relationships of Bupleurum to Heteromorpha and related genera belonging to basal clades within Apioideae revealed by molecular phylogenetics (Downie & Katz . Presence of helical thickenings on vessel walls and septate fibres can be considered as ancestral conditions for Bupleurum. The following wood anatomical trends appear to have evolved in Bupleurum species during their specialisation towards herbaceousness: (1) the development of ray cells with unlignified walls, (2) the loss of distinct growth ring boundaries, (3) the replacement of alternate by scalariform intervessel pitting, (4) enlargement of intervessel pits, (5) a higher frequency of vessels, and (6) the replacement of imperforate tracheary elements by axial parenchyma. Within the herbaceous species, the members of the series Falcata (subsection Nervosa, section Eubupleura of Wolff's (1910) system of Bupleurum) are distinctive from others in several wood characters, as distinctness of growth rings, type of intervessel pitting, type and abundance of axial parenchyma, etc. Close relationships of the perennial herb B. rigidum to the shrubby species B. gibraltaricum and B. fruticosum suggested by molecular phylogenetics can be confirmed by wood anatomical data. Therefore, the secondary xylem features of herbaceous species appear to be promising for the taxonomy of Bupleurum.
Acta Societatis Botanicorum Poloniae, 2009
The paper presents the taxonomical position and the description of the characteristic features of Macrosciadium alatum (=Ligusticum alatum). The species was recorded in the Western Bieszczady Mts (the northern part of the Carpathians) in July 2007 and is new to the flora of Europe. Its natural range comprises mainly the Caucasus region and the origin of M. alatum in south-east Poland is quite puzzling. The species has most likely been deliberatelly brought into the area. M. alatum spreads quite intensively. It penetrates semi-natural vegetation systems and seems to be expansive.