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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.

 

PASPALUM

Charles Allen


Perennial herb (in California), tufted, rhizomatous, or stoloniferous. Stem: decumbent to erect; internode solid to hollow. Leaf: basal and cauline; sheath glabrous or hairy; ligule membranous. Inflorescence: racemes 1 to many, branches digitate or raceme-like, spreading to erect. Spikelet: 2-flowered (lower floret sterile, upper floret fertile), dorsally compressed, falling as one unit, fertile lemma convex, positioned adaxially, subsessile to short-pedicelled, 1 or 2, in 2 rows along 1 side of rachis; lower glume 0, rarely present and then not on every spikelet in a raceme; upper glume and sterile lemma membranous, subequal, tip rounded, sterile palea 0 or rudimentary; fertile lemma and palea hardened, smooth, straw-colored; fertile lemma margins scarious, inrolled, clasping palea. Fruit: white, yellow, or brown, round to elliptical, planoconvex or flattened.
± 300–400 species: tropics, warm temperate worldwide. (Greek: ancient name for a kind of millet) [Allen & Hall 2003 FNANM 25:566–599] Paspalum notatum Flüggé not naturalized in California.
Unabridged references: [Riefner & Columbus J Bot Res Inst Texas 2:743–759]
Unabridged note: Paspalum boscianum collected 1934 as agricultural weed in rice field.

Key to Paspalum

1. Margins of upper glume and sterile lemma glabrous; inflorescence digitate; spikelets single

2. Upper glume pubescent on back ..... P. distichum

2' Upper glume glabrous on back ..... P. vaginatum

1' Margins of upper glume and sterile lemma long-silky-hairy; inflorescence a raceme; spikelets paired

3. Racemes 2–7; spikelets generally >= 3 mm ..... P. dilatatum

3' Racemes generally 10–30; spikelets < 3 mm ..... P. urvillei

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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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