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Tribulus pentandrus
Forssk., Fl. Aegypt. Arab. 88. 1775.
T. alatus Del., Fl. Aegypt. 62. 1813; Edgew. & Hook.f. in Hook. f., Fl. Brit. India 1: 423. 1874.
T. longipetalus
Viv., Pl. Egypt. Dec. 10, t. 2. f. 5. 1831.
Hindi: Gokhuri-kalan; Punj.: Bhakra, Hasak; Raj.: Bakda.
KEY TO THE VARIETIES
| 1a. Wings of mericarps up to 8 mm broad, pubescent, grey to greyish-yellow
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2
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| b. Wings of mericarps more than 8 mm broad, glabrous, straw-yellow
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2.3.
pterophorus
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| 2a. Flowers 6 - 8 mm across; wings of mericarps up to 4 mm broad
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2.2.
pentandrus
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| b. Flowers 10 - 12 mm across; wings of mericarps 5 - 8 mm broad
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2.1.
macropterus
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