Taraxacum umbrosum (Asteraceae, Cichorieae), a New Species Intermediate between sect. Erythrosperma and sect. Erythrocarpa, Widespread in the Balkans

A new, relatively widespread species of Taraxacum from the Balkans, intermediate between sect. Erythrosperma and sect. Erythrocarpa, T. umbrosum Sonck, Kirschner & Štěpánek, is described and illustrated. It occurs in Greece, Bulgaria and F.Y.R. Macedonia, and is characterized by numerous, narrow...

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Bibliographic Details
Published in:Annales botanici fennici 2015-08, Vol.52 (3–4), p.160-164
Main Authors: Štěpánek, Jan, Kirschner, Jan
Format: Article
Language:English
Subjects:
fruits
leaves
new species
Taraxacum
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Description
Summary:A new, relatively widespread species of Taraxacum from the Balkans, intermediate between sect. Erythrosperma and sect. Erythrocarpa, T. umbrosum Sonck, Kirschner & Štěpánek, is described and illustrated. It occurs in Greece, Bulgaria and F.Y.R. Macedonia, and is characterized by numerous, narrowly-triangular leaf lateral segments, numerous, imbricate, ovate to ovate-lanceolate, dark, distinctly narrowly bordered and conspicuously corniculate outer phyllaries, and brown or castaneous-brown, initially also red-brown achenes usually 4–5 mm long. Taraxacum umbrosum, an agamospermous taxon, is compared with morphologically similar species in sect. Erythrosperma (T. fragosum and T. taraxacoides) and with those in sect. Erythrocarpa (T. olymophilum, T. pindicola, T. dorchocarpum, T. panhellenicum, T. voricola and T. gratum).
ISSN:0003-3847
1797-2442
DOI:10.5735/085.052.0304