engleski

Morphometric Characteristics within Festuca valesiaca agg. (Poaceae-Poeae) in Istria and the status of the F. illyrica Markgr.-Dann.

Festuca illyrica MARKGR.-DANNENB. has been considered as a commonly spread species in Dinaric area, where Istria belongs. The precise analysis of the species descriptions and the determination key, as well as field work have showed that there are no clear borders between this species and other members of F. valesiaca agg. Herbarium material collected in 40 localities in Istria, from other parts of Croatia and vouchers from ZAHO and WU were taken into consideration. In the analysis 316 individuals of the F. valesiaca agg. and 20 morphological and anatomical characters were investigated. The data were analysed by using principal component analysis, discriminant analysis as well as some univariate statistical methods. It was possible to recognise only two groups corresponding with the species F. rupicola HEUFF. and F. valesiaca SCHLEICH. ex GAUDIN. Due to overlappings in the diagnostic characters F. illyrica has to be included in F. rupicola.The differentiation between the species F. rupicola and F. valesiaca is possible only on the basis of quantitative characters i.e. length of spikelets, lemmas, awns and diameter of leaf cross sections. The most discriminative character in delimitation of F. rupicola and F. valesiaca was the length of stomata.

Gramineae; Poaceae; Festuca valesiaca agg.; Festuca rupicola; Festuca illyrica; Morphometric analysis. – Flora of Istria; Europe.

nije evidentirano