Quercus castaneifolia subsp. Recurvatus (fagaceae) a new Subspecies from Hyrcanian Forests, North of Iran

Panahi, P. and Zare, H. (2023) Quercus castaneifolia subsp. Recurvatus (fagaceae) a new Subspecies from Hyrcanian Forests, North of Iran. ACTA BOTANICA HUNGARICA, 65 (1-2). pp. 121-131. ISSN 0236-6495

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Abstract

During the study on flora of Hyrcanian forests and collecting specimens in order to plant in Hyrcanian habitat of National Botanical Garden of Iran, among the collected specimens, some specimens of the Quercus castaneifolia (Chestnut leaved oak) from south of Sari city in Mazandaran Province in North of Iran seemed to be interesting and were different from the other known subspecies of Q. castaneifolia . Results of morphological study of the species showed that there are clear differences between shape of the cupule and some micro-morphology traits of the leaf trichomes and pollen. Thus, based on the botanical traits of the new taxon and according to summarised data from the obtained results of the other subspecies and variety of the Q. castaneifolia , this taxon was identified as a new subspecies and named: Quercus castaneifolia subsp. recurvatus Zare et Panahi which is described here. The new taxon is related to Quercus castaneifolia subsp. castaneifolia var. castaneifolia and well characterised by having different shape and arrangement of the involucral bracts on the acorn cupule comparing with the others.

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