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    THIS PAGE IS NO LONGER UPDATED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.

SORGHUM

Kelly W. Allred

Annual, perennial herb, cespitose or with rhizomes
Stem erect; internodes generally solid
Leaves cauline; sheaths generally < internodes; ligule membranous; blades flat or folded
Inflorescence panicle-like, open to compact
Spikelets in pairs (trios at branch tips); lower sessile, bisexual; upper 1(2) stalked, staminate; pair with subtending axis segment falling as 1 unit
Sessile spikelet ovoid; lower glume leathery, shiny, glabrous to puberulent, enclosing upper glume, florets; florets 2, lower sterile, upper fertile; lemma membranous, fertile lemma awned, awn bent, twisted; palea < lemma
Species in genus: ± 20 species: tropical, subtropical, Africa. Cult for food, forage, sugar
Etymology: (Italian: Sorgho)
Reference: [de Wet 1978 Amer J Bot 65:477–484]

previous taxon | next taxon
bioregional map for SORGHUM being generated
 


Retrieve Jepson Interchange Index to Plant Names entry for Sorghum
Retrieve dichotomous key for Sorghum
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