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
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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.



Steven A. Conley

Annual, perennial herb
Stems decumbent to erect, simple
Leaf: sheath open, loosely enclosing stem, glabrous; ligule thinly membranous, obtuse to truncate, minutely ciliate to toothed; blades ± cauline, flat, scabrous, veins minutely prickly at 10X
Inflorescence panicle-like, oblong to narrowly ovoid in outline, interrupted to compact, dense
Spikelets breaking below glumes and part of stalk, falling as 1 unit; glumes ± equal, 1-veined, entire or 2-lobed, awned at tip or between lobes, awn straight; floret 1; lemma ± 0.5 X glumes, translucent, 5-veined, tip toothed, awn < glume awn; palea slightly < lemma, transparent; anthers tightly enclosed by lemma and palea
Fruit oblong, smooth, enclosed by lemma, palea
Species in genus: 18 species: warm temp Eurasia, Africa, South America. Some species ornamental
Etymology: (Greek: much bearded)


P. maritimus Willd.


Stem 0.5–5 dm
Leaf: ligule < 6 mm, irregularly toothed, minutely hairy; blade 1–14 cm, 2–4 mm wide
Inflorescence 1–8.5(15) cm, plume-like, densely flowered
Spikelet: stalk < 1 mm; glumes 1–2 mm, minutely bristly below middle, ciliate-fringed, tip lobes 0.5–1 mm, awn 4.5–11.5 mm; lemma 0.5–1.5 mm, awn 0
Chromosomes: 2n=14,42
Ecology: Common. Moist places
Elevation: < 600 m.
Bioregional distribution: Northwestern California, Sierra Nevada Foothills, Great Central Valley
Distribution outside California: native to Mediterranean Europe, Africa

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bioregional map for POLYPOGON%20maritimus being generated
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 Polypogon maritimus
Retrieve dichotomous key for Polypogon
Overlay Consortium of California Herbaria specimen data by county on this map
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