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    THIS PAGE IS NO LONGER UPDATED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.

HIEROCHLOE

SWEETGRASS

Dieter H. Wilken

Perennial with rhizomes
Stems ascending to erect
Leaves generally basal to lower cauline, fragrant; ligule membranous, fringed at acute to obtuse tip; blade flat to inrolled
Inflorescence panicle-like, open to compact; lower branches ascending to drooping
Spikelets stalked; florets 3, breaking above glumes, falling as 1 unit, lower 2 florets staminate, with 3 stamens, upper bisexual, with 2 stamens; glumes ± equal, membranous, shiny, 1–3-veined, awnless; lemmas generally < glumes, elliptic to ovate, rounded on back, ciliate, awned to awnless, 3–5-veined; paleas 1–3-veined
Species in genus: ± 30 species: temp North America, Eurasia
Etymology: (Greek: sacred grass)
Reference: [Weimarck 1971 Bot Not 124: 129–175]
Fresh leaves used for fragrance in churches on Saints' Days and as incense by native Americans.

Native

H. occidentalis Buckley

Plants 3–10 dm
Leaf: sheath minutely scabrous; ligule 2–4 mm; blade 7–30 cm, 5–15 mm wide
Inflorescence ± open, 7–10 cm; lower branches often drooping
Spikelet 5–6 mm; lemmas rounded at slightly lobed tip, lemmas of lower florets glabrous to short hairy at base, hairs clear, upper lemma ± firmly membranous at base
Chromosomes: 2n=42
Ecology: Moist to dry, coniferous forest
Elevation: < 750 m.
Bioregional distribution: North Coast, Outer North Coast Ranges, Central Coast, San Francisco Bay Area, Outer South Coast Ranges;
Distribution outside California: to Washington
Horticultural information: IRR, DRN: 4, 5, 17 &SHD: 6, 14, 15, 16, 19, 20, 21, 22, 23, 24; rather DFCLT.

previous taxon | next taxon
bioregional map for HIEROCHLOE%20occidentalis being generated
 


Retrieve Jepson Interchange Index to Plant Names entry for Hierochloe occidentalis
Retrieve dichotomous key for Hierochloe
Retrieve multiple-entry key (MEKA) for Hierochloe
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