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Vascular Plants of California
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Eragrostis pilosa var. pilosa


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: EragrostisView DescriptionDichotomous Key


Common Name: LOVE GRASS
Habit: Annual, perennial herb; often glandular, glands often wart-like, round, pitted. Leaf: sheath margin hairy on sides just below collar; ligules ciliate. Inflorescence: generally panicle-like, open or dense, occasionally spike-like, often glandular. Spikelet: laterally compressed; glumes +- unequal, acute or acuminate, 1(3)-veined; florets 3--many, axis breaking above glumes and between florets, or persistent, with glumes, lemmas deciduous, paleae remaining attached or not; lemma keeled or rounded, acute or obtuse, 3-veined, veins generally obvious; palea +- = lemma. Fruit: 0.4--2.4 mm, variously-shaped, occasionally longitudinally grooved, generally not noticeably compressed, generally red-brown.
Species In Genus: +- 300 species: tropics, warm temperate. Etymology: (Greek: eros, love, agrostis, a kind of grass)
eFlora Treatment Author: John R. Reeder
Reference: Peterson 2003 FNANM 25:65--105
Unabridged Reference: Hilu and Alice 2001 Syst Bot 29:545--552; Koch 1974 Ill Biol Monogr 48:1--74
Eragrostis pilosa (L.) P. Beauv. var. pilosa
NATURALIZED
Habit: Annual. Stem: ascending to erect, 1--6.5 dm; axis below nodes rarely glandular. Leaf: sheath glabrous, margin sparsely hairy near collar, not glandular; ligule < 0.5 mm; blade 2--20 cm, 1--3.5 mm wide, flat to +- inrolled. Inflorescence: 4--20 cm, < 15 cm wide, +- open; lower 1--2 nodes with whorled branches; primary branches slender, spreading or ascending, rarely reflexed; spikelet stalks appressed to spreading. Spikelet: 3.5--10 mm, 1--2 mm wide; lower glume 0.5--1 mm, generally < 1/2 lowest lemma length, upper slightly > lower; axis not breaking apart; florets 5--16; lemma +- 1.5 mm, gray-green with purple or +- red tip, lateral veins obscure; palea deciduous; anthers 0.2--0.3 mm. Fruit: 0.5--0.9 mm, light to dark brown, ovoid, smooth. Chromosomes: 2n=40.
Ecology: Disturbed sandy soils; Elevation: < 770 m. Bioregional Distribution: KR, GV, MP; Distribution Outside California: to eastern United States, Caribbean, Mexico. Flowering Time: Jul--Oct Note: Other variety in central United States.
Jepson eFlora Author: John R. Reeder
Reference: Peterson 2003 FNANM 25:65--105
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Botanical illustration including Eragrostis pilosa var. pilosa

botanical illustration including Eragrostis pilosa var. pilosa

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Citation for this treatment: John R. Reeder 2012, Eragrostis pilosa var. pilosa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=58374, accessed on December 05, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on December 05, 2019.

Eragrostis pilosa var. pilosa
click for enlargement
© 2007 Steve Matson
Eragrostis pilosa var. pilosa
click for enlargement
© 2007 Steve Matson
Eragrostis pilosa var. pilosa
click for enlargement
© 2007 Steve Matson
Eragrostis pilosa var. pilosa
click for enlargement
© 2007 Steve Matson
Eragrostis pilosa var. pilosa
click for enlargement
© 2007 Steve Matson

More photos of Eragrostis pilosa var. pilosa in CalPhotos



Geographic subdivisions for Eragrostis pilosa var. pilosa:
KR, GV, MP
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.