|University of California, Berkeley|
Key to families | Table of families and genera
1. Spikelets all or many solitary, ± stalked; perianth bristles strongly curled in fruit
2. Perianth bristles exceeding flower bracts; stem 3–5 mm diam at middle; flower bract midrib ± green to pale ± brown, ± obscure; fruit 0.6–0.9 mm ..... S. cyperinus
2' Perianth bristles not exceeding flower bracts; stem 0.6–3 mm diam at middle; flower bract midrib generally green, prominent; fruit 1–1.8 mm ..... S. pendulus
1' Spikelets in head-like clusters, sessile; perianth bristles ± curled or curved to straight in fruit
3. Ligule present; fruit generally 2-angled; stigmas 2(3); perianth bristles curved to straight in fruit, fine-toothed ..... S. microcarpus
3' Ligule 0; fruit generally 3-angled; stigmas 3(2); perianth bristles ± curled to straight in fruit, fine-toothed above middle
4. Perianth bristles >> fruit, teeth generally ascending; flower bract generally ± black ..... S. congdonii
4' Perianth bristles < to > fruit, teeth generally reflexed; flower bract green to brown or ± black ..... S. diffusus
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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