The Morphological and Genetic Variation in the Polymorphic Species <I>Picris hieracioides</I> (Compositae, Lactuceae) in Europe Strongly Contrasts with Traditional Taxonomical Concepts
2012; American Society of Plant Taxonomists; Volume: 37; Issue: 1 Linguagem: Inglês
10.1600/036364412x616828
ISSN1548-2324
AutoresMarek Slovák, Jaromír Kučera, Karol Marhold, Judita Zozomová‐Lihová,
Tópico(s)Natural product bioactivities and synthesis
ResumoAbstract The present paper provides a large-scale taxonomic revision of Picris hieracioides, a highly polymorphic and taxonomically controversial species in Europe. Altogether, 104 populations were sampled and examined using multivariate morphometrics and genetic amplified fragment length polymorphism (AFLP) data. Two morphotypes are delimited, the ‘higher altitude’ and the ‘lower altitude’ morphotypes, which are congruent with the two main genetic groupings revealed by AFLP markers. It is concluded that two subspecies should be recognized within this species, P. hieracioides subsp. hieracioides, comprising annual to biennial plants occupying dry, sunny, often man-made habitats at low altitudes, and P. hieracioides subsp. umbellata, being mostly a short-lived perennial that grows in mesic, semi-natural or natural habitats at higher altitudes. This infraspecific treatment strongly contrasts with the traditional taxonomic concepts, which recognize up to 10 subspecies of P. hieracioides in Europe. An identif...
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