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Vascular Plants of California
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Sporobolus wrightii
BIG SACATON


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: SporobolusView DescriptionDichotomous Key


Common Name: DROPSEED, SACATON
Habit: Annual, perennial herb. Stem: generally ascending to erect, 2--20 dm, generally tufted, +- solid in ×-section. Leaf: generally basal; cauline few, ascending or curving away; distal sheath margin and collar glabrous or hairy; ligule < 1 mm, hairy or membranous, fringed; blade flat to inrolled, generally glabrous or scabrous, occasionally short-soft-hairy. Inflorescence: terminal, also occasionally axillary, panicle- or spike-like, generally partly enclosed by sheath; branches spreading or appressed. Spikelet: < 6 mm, generally pale to gray-green or +- purple; glumes generally unequal, upper < or > lemma, membranous to translucent, 1-veined; floret bisexual, generally breaking above glumes; lemma texture generally like glumes, 1(3)-veined; palea < or > lemma. Fruit: utricle-like, when wet gelatinous with seed emergent from split ovary wall.
Species In Genus: +- 150 species: America, Eurasia, Africa, Australia. Etymology: (Greek: to throw seed, from deciduous seeds)
eFlora Treatment Author: Michael Curto
Reference: Peterson et al. 2003 FNANM 25:115--139
Unabridged Reference: Baaijens & Veldkamp 1991 Blumea 35: 393--458; Colbry 1957 Cont US Natl Mus 34:1--24; Veldkamp 1990 Taxon 39:327--328
Sporobolus wrightii Munro ex Scribn.
NATIVE
Habit: Perennial herb. Stem: tufted, erect, 9--25 dm. Leaf: base, shiny, straw-colored, distal sheath margin glabrous to short-hairy, collar glabrous or with sparse long hairs to 6 mm; ligule < 0.5 mm, fringe hairs to 2 mm; blade 20--70 cm, 3--10 mm wide. Inflorescence: generally terminal, exserted, lanceolate, open; 1° branches ascending, lowest generally > 6 cm, > internodes, 2° weakly spreading or appressed, bearing 3°, spikelets to near base, appearing dense. Spikelet: 1.5--3 mm, green to purple; glumes narrowly lanceolate, tip acute to obtuse, unequal, lower 0.5--1 mm, upper 0.8--2, > 0.6 × lemma; lemma 1.2--2.5 mm, glabrous, lanceolate to ovate, tip acute; anthers 1.1--1.3 mm. Fruit: 1--1.4 mm, ellipsoid, striate, red-brown. Chromosomes: 2n=36.
Ecology: Seasonally moist, alkaline areas; Elevation: < 1000 m. Bioregional Distribution: SW, DSon; Distribution Outside California: Utah; Arizona to Oklahoma, Texas, northern and central Mexico. Flowering Time: Apr--Nov Note: Seeded for erosion control or wetland revegetation.
Synonyms: Sporobolus airoides (Torr.) Torr. var. wrightii (Munro ex Scribn.) Gould
Jepson eFlora Author: Michael Curto
Reference: Peterson et al. 2003 FNANM 25:115--139
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Citation for this treatment: Michael Curto 2012, Sporobolus wrightii, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=45333, accessed on December 14, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on December 14, 2019.

No expert verified images found for Sporobolus wrightii.



Geographic subdivisions for Sporobolus wrightii:
SW, DSon
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map of distribution 1
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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.