Jepson Flora Project: Jepson Interchange    

 
link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

    THIS PAGE IS NO LONGER UPDATED
    AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

POACEAE

GRASS FAMILY

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.

CYNODON

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]

Introduced

C. plectostachyus (K. Schum.) Pilg.

STAR GRASS

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

previous taxon | next taxon
bioregional map for CYNODON%20plectostachyus being generated
 


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
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page
Glossary


University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California