TY - JOUR T1 - Morpho-anatomical, palynological studies on Astragalus microcephalus; Anatolian tragacanth AU - Kaya, Ayla PY - 2025 DA - June JF - Journal of Research in Pharmacy JO - J. Res. Pharm. PB - Marmara University WT - DergiPark SN - 2630-6344 SP - 627 EP - 635 VL - 27 IS - 2 LA - en AB - Astragalus microcephalus Willd. (Fabaceae) is a member of the section Rhacophorus Bunge and is anelement of the Irano-Turanian phytogeographic region. It grows mainly in the steppes of central Anatolia. Extraction oftragacanth and selenium is a valuable tool in pharmacy and is also important economically and ecologically. In thisstudy, morphological, anatomical, pollen characteristics and seed surface properties of A. microcephalus wereinvestigated in detail. The plant consists of thorny bushes that make up a pillow. Morphological characters such as theshape of paripinnate leaves, stipules and bracts, flowers whitish-yellow and purple colored in margins, the flowernumber in the inflorescence, the stenonychioid type of standard and reniform type of seed can be helpful to distinguishspecies of Astragalus. There is secondary growth in stem anatomy. The stem of this species has got tragacanth canals inpith. Sclerenchyma tissue is well developed in the petiole. A. microcephalus has equifasial leaves. The vascular bundlesare surrounded by a bundle sheath. The pollen grains of A. microcephalus are tricolpate and prolate-spheroidal. Theexine sculpturing is microreticulate with perforate while the seed surface is rugulate. Scanning electron microscopy(SEM) is used to determine pollen and seed morphology. KW - Anatomy KW - Astragalus microcephalus KW - morphology KW - pollen CR - Baytop T. Türkiye’de Bitkiler ile Tedavi, Nobel Tıp Kitapevleri, İstanbul 1999. Tanker N, Koyuncu M, Coşkun M. 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