Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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James P. Smith, Jr., except as specified

Annual to bamboo-like; roots generally fibrous
Stem generally round, hollow; nodes swollen, solid
Leaves alternate, 2-ranked, generally linear; sheath generally open; ligule membranous or hairy, at blade base
Inflorescence various (of generally many spikelets)
Spikelet: glumes generally 2; florets (lemma, palea, flower) 1–many; lemma generally membranous, sometimes glume-like; palea generally ± transparent, ± enclosed by lemma
Flower generally bisexual, minute; stamens generally 3; stigmas generally 2, generally plumose
Fruit: achene-like grain
Genera in family: 650–900 genera; ± 10,000 species: worldwide; greatest economic importance of any family (wheat, rice, maize, millet, sorghum, sugar cane, forage crops, ornamental, weeds; thatching, weaving, building materials)
Reference: [Hitchcock 1951 Manual grasses US, USDA Misc Publ 200; Clayton & Renvoise 1986 Kew Bull Add Series 13]
See Glossary p. 26 for illustrations of general family characteristics. Generally wind-pollinated.


Perennial, mat-like, from rhizomes or stolons
Stems ± branched
Leaf: blade short, flat, narrow, fleshy
Inflorescence umbel-like; branches 2–20, spike-like, with 2 rows of overlapping spikelets along 1 side of axis; spikelets sessile
Spikelet bisexual, strongly compressed; glumes ± equal, 1-veined, awn 0; floret 1, rarely 2, upper floret vestigial, breaking above glumes; lemma keeled, 3-veined, awn 0; palea = lemma, 2-veined
Species in genus: 8–10 species: tropical, warm temp Eurasia, Africa
Etymology: (Greek: dog tooth, from hard scales on rhizomes)
Reference: [Harlan et al. 1970 Okla State Univ Agric Exp Sta Bull B–673]


C. plectostachyus (K. Schum.) Pilg.


Perennial from stolons
Stem erect, 6–10 dm
Leaf: ligule thin, transparent; blade 10–30 cm, 4–7 mm wide, hairy
Inflorescence: branches 3–7 cm, generally 7–20, curled with age
Spikelet 2.5–3 mm; glumes < 0.3 mm, scale-like, deltate; lemma 2–3 mm, elliptic in outline, keel and margins hairy; palea keels hairy
Chromosomes: 2n=18
Ecology: Uncommon. Roadsides
Elevation: < 100 m.
Bioregional distribution: San Joaquin Valley (Merced Co.)
Distribution outside California: native to Africa

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bioregional map for CYNODON%20plectostachyus being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Cynodon plectostachyus
Retrieve dichotomous key for Cynodon
Overlay Consortium of California Herbaria specimen data by county on this map
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