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Key to families | Table of families and genera
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].
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