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Lathyrus saxatilis (Vent.) Vis.
The species is listed in the Red Data Book of the Republic of Bulgaria to the category "Critically Endangered"[1].
Annual herb. Stem unbranched or branched from the base, 10–15 cm. Leaves paripinnate, with 1–3 pairs of leaflets. Flowers solitary, 5–6 mm long, pale yellow or pale bluish. Legume 1.5–3 cm long, elliptic. Seeds 3–4, elliptic, smooth. March-May. Insect pollination. Reproduction by seeds, dispersed through zoochory or barochory[2].
Valley of Mesta River (Stargach Mt above Ilinden village, Gotse Delchev district), Thracian Lowland (Besaparski hills); at 200–500 m alt[3].
Mediterranean area, Crimea[4].
[1] Stefan Stanev. 2015. In: Peev, D. et all. (ed.) 2015. Red Data Book of Bulgaria. Vol. 1. BAS & MOEW.
[2] Stefan Stanev. 2015. In: Peev, D. et all. (ed.) 2015. Red Data Book of Bulgaria. Vol. 1. BAS & MOEW.
[3] Stefan Stanev. 2015. In: Peev, D. et all. (ed.) 2015. Red Data Book of Bulgaria. Vol. 1. BAS & MOEW.
[4] Stefan Stanev. 2015. In: Peev, D. et all. (ed.) 2015. Red Data Book of Bulgaria. Vol. 1. BAS & MOEW.