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Morphological diversity and taxonomy of the Pimpinella tragium VILL. group (Umbelliferae – Apioideae) in the Mediterranean
Author(s) -
Yurtseva O. V.,
Tikhomirov V. N.
Publication year - 1998
Publication title -
feddes repertorium
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 25
eISSN - 1522-239X
pISSN - 0014-8962
DOI - 10.1002/fedr.19981090703
Subject(s) - biology , botany , herbarium , taxon , ecotype
Variability of morphological characters in Pimpinella tragium VILL. group was investigated using herbarium material natural populations field sampling and cultivated plants. As a result of anatomical and morphological research, and by means of Principal Component Analysis and Canonical Variance Analysis, two polymorphic species were distinguished – P. tragium VILL. with hairs 0.05–0.2 mm long and P. polyclada BOISS. & HELDR. with hairs 0.3–1 mm long. Both polymorphic taxa include forms differing in density of pubescence and leaf dissection. Distribution of pinnatisect and bipinnatisect leaf forms over the range corresponds to the pattern of summer precipitation and duration of the drought period. In P. tragium several ecotypes could be distinguished, differing in leaf shape and structure, life history and development rhythm. However, recognition of infraspecific taxa is inexpedient and can misrepresent the complicated pattern of morphological variability within P. tragium VILL.