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Polypogon monspeliensis
ANNUAL BEARD GRASS, RABBITFOOT GRASS

Higher Taxonomy
Family: Poaceae (Gramineae)View DescriptionDichotomous Key

Common Name: GRASS FAMILY
Habit: Annual to woody perennial herb; roots generally fibrous. Stem: generally round, hollow; nodes swollen, solid. Leaf: alternate, 2-ranked, generally linear, parallel-veined; 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; perianth vestigial; stamens generally 3; stigmas generally 2, generally plumose. Fruit: grain, sometimes achene- or utricle-like.
Genera In Family: 650--900 genera; +- 10550 species: worldwide; greatest economic importance of any family (wheat, rice, maize, millet, sorghum, sugar cane, forage crops, ornamental, weeds; thatching, weaving, building materials). Note: Generally wind-pollinated. Achnatherum, Ampelodesmos, Hesperostipa, Nassella, Piptatherum, Piptochaetium, Ptilagrostis moved to Stipa; Elytrigia, Leymus, Pascopyrum, Pseudoroegneria, Taeniatherum to Elymus; Hierochloe to Anthoxanthum; Lolium, Vulpia to Festuca; Lycurus to Muhlenbergia; Monanthochloe to Distichlis; Pleuraphis to Hilaria; Rhynchelytrum to Melinis. The following taxa (in genera not included here), recorded in California from historical collections or reported in literature, are extirpated, lacking vouchers, or not considered naturalized: Acrachne racemosa (Roth) Ohwi, Allolepis texana (Vasey) Soderstr. & H.F. Decker, Amphibromus nervosus (Hook. f.) Baill., Axonopus affinis Chase, Axonopus fissifolius (Raddi) Kuhlm., Coix lacryma-jobi L., Cutandia memphitica (Spreng.) K. Richt., Dinebra retroflexa (Vahl) Panz., Eremochloa ciliaris (L.) Merr., Eustachys distichophylla (Lag.) Nees, Gaudinia fragilis (L.) P. Beauv., Miscanthus sinensis Andersson, Neyraudia arundinacea (L.) Henrard, Phyllostachys aurea Rivière & C. Rivière, Phyllostachys bambusoides Siebold & Zuccarini, Rottboellia cochinchinensis (Lour.) Clayton, Schedonnardus paniculatus (Nutt.) Branner & Coville, Schizachyrium cirratum (Hack.) Wooton & Standl., Schizachyrium scoparium (Michx.) Nash, Themeda quadrivalvis (L.) Kuntze, Thysanolaena latifolia (Hornem.) Honda, Tribolium obliterum (Hemsl.) Renvoize, Zea mays L., Zizania palustris L. var. interior (Fassett) Dore, Zoysia japonica Steud. Paspalum pubiflorum E. Fourn., Paspalum quadrifarium Lam., are now reported for southern California (J Bot Res Inst Texas 4:761--770). See Glossary p. 30 for illustrations of general family characteristics.
eFlora Treatment Author: James P. Smith, Jr., except as noted
Scientific Editor: James P. Smith, Jr., J. Travis Columbus, Dieter H. Wilken.
Genus: PolypogonView DescriptionDichotomous Key

Common Name: BEARD GRASS
Habit: Annual, perennial herb. Stem: 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 10×. Inflorescence: panicle-like, oblong to narrowly ovoid, interrupted to compact, dense. Spikelet: floret and glumes falling as 1 unit at maturity; glumes +- equal, 1-veined, entire or 2-lobed, awns 0, or arising at tip or between lobes, awn straight; floret 1; lemma +- 0.5 × 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 temperate Eurasia, Africa, South America. Etymology: (Greek: much bearded) Note: Some species ornamental. Polypogon fugax Steud. an historical waif.
eFlora Treatment Author: Steven A. Conley

Polypogon monspeliensis (L.) Desf.
NATURALIZED
Habit: Annual. Stem: 2--10 dm. Leaf: ligule 2--12 mm, irregularly toothed, minutely hairy; blade 1--20.5 cm, 4--6 mm wide. Inflorescence: 1--17 cm, plume-like, dense. Spikelet: stalk << 0.5 mm; glumes 1--2.5 mm, 2-lobed, minutely bristly, awn 2--10 mm; lemma 0.5--1.5 mm, awn 0.5--4.5 mm. Chromosomes: 2n=28,35.
Ecology: Common. Moist places, along streams; Elevation: < 2100 m. Bioregional Distribution: CA; Distribution Outside California: North America; native to southern and western Europe. Flowering Time: Apr--Aug
eFlora Treatment Author: Steven A. Conley
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Citation for this treatment: Steven A. Conley 2016. Polypogon monspeliensis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=39378, accessed on May 23, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 23, 2016.


Polypogon monspeliensis
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© 2008 Steve Matson
Polypogon monspeliensis
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© 2015 Steve Matson
Polypogon monspeliensis
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© 2015 Steve Matson
Polypogon monspeliensis
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© 2015 Steve Matson
Polypogon monspeliensis
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© 2013 Neal Kramer
Polypogon monspeliensis
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© 2006 Steve Matson

More photos of Polypogon monspeliensis in CalPhotos


Geographic subdivisions for Polypogon monspeliensis:
CA;
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.