In this study, the seed morphologies and testa structures of 16 taxa belonging to the Platystylis section of the Lathyrus (Fabaceae) genus were analyzed. These taxa were the following; L. pallescens (Bieb.) Koch, L. brachypterus Cel. L. haussknechtii Širj. L. karsianus P.H. Davis, L. satdaghensis P.H. Davis, L. nivalis Hand.-Mazz, L. atropatanus (Grossh.) Širj., L. armenus (Boiss. & Huet) Širj., L. cyaneus (Steven) Koch var. cyaneus, L. digitatus (Bieb.) Fiori, L. tukhtensis Czecz., L. variabilis (Boiss. & Kotschy) Maly, L. spathulatus Cel., L. elongatus (Bornm.) Širj., L. cilicicus Hayek & Siehe, L. boissieri Širj. The analyzed morphological properties were seed size and shape, color, surface shape, hilum length and width. The general shapes of the seeds were determined as prolate, subprolate and spheroidal. The surface shape was smooth and slightly tuberculate. The largest seeds were observed in L. satdaghensis 3.39 (5.96) 7.90 × 3.08 (3.88) 5.00 mm, and the smallest seeds in L. elongatus 2.24 (3.45) 5.05 × 2.11 (2.74) 3.73 mm. Also the testa structures of the seeds were analyzed by using a scanning electron microscope (SEM). The stereo microscope and SEM pictures of the taxa were shown in the text.
Key words: Lathyrus, Platystylis, seed morphology, Turkey.
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