Revision of the genus Crataegus in the East and Northeast of Iran

Morphological, numerical and chemical taxonomy of the genus Crataegus was studied in the East and northeast of Iran. More than ۸۰ fresh specimens as well as ۵۰ herbarium specimens from different localities were examind. Using vegetative and reproductive morphological characters an identification key is provided for all taxa. For numerical taxonomy ۸۵ morphological characters were measured and the data were analysed by UPGMA method using NTSYS software. In chemotaxonomical study using paper chromatography, about ۴۱ flavonoid spots were recognised by UV ray and UV+NH۳ steam. The results showed the studied taxa can be classified into one section (sect. Crataegus), five series (ser. Crataegus, ser. Erianthae, ser.Orientales, ser. Pentagyna and ser. Microphyllae), and ۱۳ taxa at species and infra-species  level.

Keywords:

flavonoid , Rosaceae , Chemotaxonomy , numerical taxonomy , Morphology , Iran