Study anatomical vegetative and reproductive organs of Hypericum dogonbadanicum Assadi

Hypericum dogonbadanicum (Hypericaceae) is a narrow endemic species in SW Iran. It is a shrub like species, lives in rocky clifts, and is morphologically distinct from other Iranian species of Hypericum. In order to investigate the anatomical aspects of vegetative organs, leaves and stems were cut manually and studied using light microscopy. Reproductive aspects were studied using microtome cutting and Hematoxylin-Eusin dyeing.Leaves were dorsiventral with an epidermis layer containing sclerids, palisade parenchyma below the epidermis layers, and spongy parenchyma tissue containing calcium oxalate crystals in the middle. Calcium oxalate crystals were also observed in the stems. Secretory channels were present in the phloem. Reproductive meristems at the end of stems were larger than vegetative meristems. Our results also showed that staminal development is an earlier stage in comparison with ovary development.