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
For up-to-date information about California vascular plants, visit 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.

CORTADERIA

Kelly W. Allred

Perennial, dioecious
Stems densely clumped, erect
Leaves generally basal; sheath glabrous to hairy; ligule short, hairy; blades flat or folded
Inflorescence panicle-like, plume-like
Spikelets ± laterally compressed; glumes unequal, 1-veined; florets 2–8, breaking above glumes and between florets; lemmas silky-hairy, 3–5-veined, tip awned
Species in genus: 24 species: South America, New Zealand, New Guinea
Etymology: (Argentine term for cutting)
Reference: [Costas Lippmann 1977 Fremontia 4:25–27]

Introduced

C. selloana (Schult. & Schult. f.) Asch. & Graebn.

PAMPAS GRASS


Stem 2–4 m
Leaf: sheath glabrous to sparsely hairy; blade 3–8 cm wide, ascending, bluish to pale green, distal half curled, upper surface glabrous at base
Inflorescence 3–13 dm
Spikelets 15–17 mm; florets 4–8; pistillate lemma hairy, staminate lemma glabrous, tip acuminate, awn 2.5–5 mm; stigmas exserted
Chromosomes: 2n=72
Ecology: Disturbed sites
Elevation: < 300 m.
Bioregional distribution: North Coast, Sierra Nevada Foothills (American River), Central Coast, San Francisco Bay Area, South Coast (Orange Co.), cultivated elsewhere
Distribution outside California: s US; native to e S.America

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bioregional map for CORTADERIA%20selloana being generated
 
N.B. The distribution depicted here differs from that given in The Jepson Manual (1993)
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 Cortaderia selloana
Retrieve dichotomous key for Cortaderia
Overlay Consortium of California Herbaria specimen data by county on this map
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