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Pakistan | Family List | Zygophyllaceae | Tribulus

Tribulus longipetalus Viv., Pl. Egypt. Dec. 10. t. 2. f. 5. 1831. Jafri, Fl. Kar. 184. 1966; Hadidi in Rech. f., l.c. 13; in Tackholm, l.c.

Tribulus longipetalus subsp. macropterus

Credit: Azmat

Prostrate, green to greyish-white, annual or biennial herb, pilose to densely villous. Leaves 1-4.5 cm long; stipules foliaceous, broadly ovate, one of the pair falcate, 2-5 mm long, acute; leaflets (3-) 4-6 pairs, subsessile, oblong-elliptic, inequilateral, 3-10 (-12) mm long, 1.5-6 (-8) mm broad, subcrenate ,acute. Flowers yellow, 8-15 mm across; pedicels 5-8(-10) mm long. Sepals lanceolate, (3-) 4-6 mm long, 1.5-3 mm broad, acute. Petals obovate-oblong, 4-6 mm long, 2-3 mm broad, minutely clawed, truncate or minutely wavy at apex. Stamens with 2.5-4 mm long filaments, anthers minutely apiculate. Ovary globose, clothed with antrorse, bulbous based, 1.5-2 mm long hairs; style short, stigma papillose. Fruit discoid-subglobose, 6-8 mm in diameter excluding wings of mericarps, mericarps transversely 2-3-locellate, 2-3-seeded, glabrous to densely pilose, with dentate to serrate, up to 15 mm broad wings.

Distribution: Afghanistan, S.W. Asia, Arabia, Sudan, Somalia and North Africa.

A very variable species; 3 subspecies are recorded from the area.

Lower Taxa

Related Synonym(s):


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