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Chloris gayana
RHODES 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: ChlorisView DescriptionDichotomous Key

Habit: Annual, perennial herb, cespitose, rhizomatous or stoloniferous. Stem: decumbent to erect, 1--7 dm. Leaf: ligule membranous or hairy-tufted; blade generally 10--50 cm, 0.2--1.5 cm wide, flat. Inflorescence: generally digitate; branches 2--30, sometimes in distinct whorls, each raceme- or spike-like branch with 2 rows of overlapping spikelets on 1 side of axis. Spikelet: laterally compressed; glumes unequal, < florets, 1--3-veined; axis breaking above glumes; lower florets fertile, 1--2, upper florets sterile or staminate, 1--4, < 1/2 lower floret length; fertile floret lemma ovate to lanceolate, back glabrous, midvein hairy, 3-veined, awn 1; palea < lemma, translucent, obscure; anthers 3. Fruit: +- fusiform, 3-angled.
Species In Genus: +- 50 species: warm temperate, tropics worldwide, especially southern hemisphere. Etymology: (Greek: goddess of flowers)
eFlora Treatment Author: Rosa Cerros-Tlatilpa

Chloris gayana Kunth
NATURALIZED
Habit: Perennial herb, generally from stolons. Stem: 2--5 dm. Leaf: sheath glabrous to scabrous, hairy near collar; ligule hairy; blade 25--50 cm, 3--9 mm wide. Inflorescence: digitate; branches 9--30, erect, 8--15 cm. Spikelet: 3--5 mm, light brown to brown-orange at maturity; glumes acute to short-awned, lower 1--3 mm, upper 2--4.5 mm; fertile florets 1--2, 2--4 mm, < 1 mm wide, ovate, obovate, or elliptic, lemma margin generally hairy-tufted near tip, awn 1--7.5 mm; sterile florets (1)2--4, lowest 1.8--3.2 mm, awn 0.8--3 mm. Fruit: 1--1.6 mm. Chromosomes: 2n=20,30,40.
Ecology: Disturbed areas; Elevation: < 300 m. Bioregional Distribution: GV, SCo, expected elsewhere; Distribution Outside California: Arizona, Texas, Louisiana, Illinois, Florida; native to Africa. Flowering Time: All year Note: Cult for forage.
eFlora Treatment Author: Rosa Cerros-Tlatilpa
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Citation for this treatment: Rosa Cerros-Tlatilpa 2016. Chloris gayana, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=19262, accessed on May 06, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 06, 2016.


Chloris gayana
click for enlargement
© 2005 Steve Matson
Chloris gayana
click for enlargement
© 2005 Steve Matson
Chloris gayana
click for enlargement
© 2005 Steve Matson
Chloris gayana
click for enlargement
© 2005 Steve Matson
Chloris gayana
click for enlargement
© 2005 Steve Matson
Chloris gayana
click for enlargement
© 2005 Steve Matson

More photos of Chloris gayana in CalPhotos


Geographic subdivisions for Chloris gayana:
GV, SCo, expected elsewhere;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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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.