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. |
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY |
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) 1many; 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: 650900 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.
Species in genus: 1 sp
Etymology: (P. Hainardi, Swiss phytogeographer)
Reference: [Greuter & Rechinger 1967 Boissiera 13:22196]
See Parapholis.
Introduced |
Annual
Stem ascending to erect, 25 dm, branched, glabrous
Leaf: sheath 16 cm; ligule 1 mm, membranous; blade generally flat, ribbed, upper surface scabrous
Inflorescence spike-like, 820 cm, cylindric, stiff, straight, breaking at nodes; spikelets alternate, 2-ranked, appressed, embedded in axis, falling with axis segment, lowest included in sheath
Spikelet: glume 1, generally 57 mm, thick, rigid, margin sometimes inrolled, 9-veined; floret 1, bisexual; lemma 46 mm, translucent, back facing inflorescence axis, 3-veined; palea ± = lemma, translucent; anther 23.5 mm
Fruit 2.53.5 mm
Chromosomes: 2n=26,52
Ecology: Coastal salt marshes, alkaline soils
Elevation: < 300 m.
Bioregional distribution: n Sierra Nevada Foothills (Amador Co.), deltaic Great Central Valley, Central Coast, San Francisco Bay Area, South Coast
Distribution outside California: Baja California; native to Europe
Synonyms: Monerma c. (Willd.) Coss. & Durieu