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| Jepson eFlora
Key to families | Table of families and genera This text currently parallels The Jepson Manual: Vascular Plants of California, Second Edition that is now available at the University of California Press. Text appearing in blue on this page will not appear in the printed book; it will be displayed only on the Web. Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link. |
Annual, glabrous.
Stem: ± erect, 1–20 cm.
Leaf: basal, 1–3.
Inflorescence: inflorescence bracts 1–3, leaf-like; spikelets in dense, spheric to cylindric spikes, 50–150, dense, spiraled, sessile; flower bracts spiraled, 100–400, (1)2 per flower (a 2nd, inner bract between flower, spikelet axis generally present), outer > inner, mucronate to awned, brown, with 1 central green, 2–10 lateral ± white veins, inner generally colorless, generally veinless.
Flower: bisexual; perianth 0; stamens 1–3, anthers 0.2–0.3 mm; styles 2-branched.
Fruit: 3-angled to ± flat, abruptly soft-pointed, papillate, brown.
± 35 species: North America, tropics, warm temperate. (Greek: falling chaff, from translucent inner flower bract) [Tucker 2002 FNANM 23:195–197]
Unabridged references: [Goetghebeur & van den Borre 1989 Wageningen Agr Univ Pap 89:1–87]
1. Outer flower bract awn (0.6)1–1.5 mm, outcurved; fruit light brown ..... L. occidentalis
1' Outer flower bract awn <= 1 mm, ± straight to outcurved; fruit light red-brown to black or light to dark brown
2. Inner flower bract ± = fruit; outer flower bract awn 0.5–1 mm; fruit light red-brown to black ..... L. aristulata
2' Inner flower bract 0 or < 1/2 fruit; outer flower bract awn < 0.2 mm; fruit light to dark brown ..... L. micrantha
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].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.