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Tribulus
Family: Zygophyllaceae
Tribulus image
Max Licher
  • Gleason & Cronquist
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Vascular plants of NE US and adjacent Canada
Sep caducous; stamens mostly 2 or 3 times as many as the pet; nectary- glands both intra- and extrastaminal; ovary 5-locular, with 5-10 ovules per locule; fr spiny, beakless, splitting at maturity into 5 segments, each transversely septate into 3-5 1-seeded compartments; germination hypogeal; diffusely branched, prostrate herbs with opposite, even- pinnate lvs and small yellow fls solitary at the axils. 30, Old World.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Species within checklist: Papago Park
Tribulus terrestris
Image of Tribulus terrestris
The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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