Sphinctospermum constrictum (S. Wats.) Rose  
Family: Fabaceae
Hourglass Peaseed, more...tight sphincter seed
[Tephrosia constricta S. Wats.]
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Liz Makings
  • SW Field Guide
  • Resources
Wiggins 1964, Kearney and Peebles 1969
Duration: Annual Nativity: Native Lifeform: Forb/Herb General: Stems simple or sparingly ascendingly branched, 20-60 cm tall, slender, sparingly strigose to glabrate. Leaves: Simple, sessile, linear, 1-3 mm broad, 2-8 cm long, glabrous or with a few scattered hairs, pale green. Flowers: Pedicels 1-5 mm long, lobes lance-subulate, slightly spreading, equaling or slightly exceeding tube, corolla pink about 5 mm long. Fruits: Pod linear, 2.5-3 mm wide, 3-4 cm long, straight, glabrous, pendent at an angle of about 40 degrees. Ecology: Uncommon, found on grassy hillsides and plains, mostly in sandy soil. likes the open from 2,500-4,000 ft (762-1219 m); flowers July-September. Notes: Hour glass shaped seeds are very distinctive. Ethnobotany: Unknown Etymology: Sphinctospermum means pinched seed, while constrictum means constricted also. Synonyms: Tephrosia constricta Editor: SBuckley, 2010
Sphinctospermum constrictum
Open Interactive Map
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Sue Carnahan
Sphinctospermum constrictum image
Liz Makings
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Sue Carnahan
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Sue Carnahan
Sphinctospermum constrictum image
Sue Carnahan
Sphinctospermum constrictum image
Sue Carnahan
Sphinctospermum constrictum image
Sue Carnahan
Sphinctospermum constrictum image
Sue Carnahan
Sphinctospermum constrictum image
Sue Carnahan
Sphinctospermum constrictum image
Sue Carnahan
Sphinctospermum constrictum image
Sue Carnahan
Sphinctospermum constrictum image
Sue Carnahan
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G. Yanes-A.
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M. Valenzuela
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Arizona State University Herbarium
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G. Yanes-A.
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G. Yanes-A.
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