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Vascular Plants of California
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Torreyochloa pallida var. pauciflora

Higher Taxonomy
Family: Poaceae (Gramineae)View DescriptionDichotomous Key
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: TorreyochloaView DescriptionDichotomous Key

Habit: Perennial herb from rhizomes. Stem: decumbent to erect, sometimes rooting at nodes. Leaf: basal and cauline; sheath open +- to base; ligule thinly membranous, acute to obtuse, sometimes toothed. Inflorescence: panicle-like; lower branches reflexed to erect. Spikelet: bisexual; glumes < lowest floret, lower glume generally 1-veined, upper generally 3-veined; florets 2--8; lemma firm, back rounded, scabrous, margin near tip entire to scabrous-serrate at 10×, prominently (5)7--9-veined, veins not converging at tip; awn 0; palea +- = lemma.
Species In Genus: +- 5 species: temperate North America, eastern Asia. Etymology: (J. Torrey, American botanist, 1796--1873) Note: Plants generally occurring in freshwater wet habitats.
eFlora Treatment Author: Jerrold I. Davis
Unabridged Reference: Davis 2007 FNANM 24:607--609, 1991 Phytologia 70:361--365
Torreyochloa pallida (Torr.) G.L. Church var. pauciflora (J. Presl) J.I. Davis
Stem: 2--15 dm. Inflorescence: (3)5--25 cm; lower branches weakly reflexed to spreading or erect. Spikelet: florets 3--8; lowest lemma 2.2--3.3 mm; anthers of lowest floret 0.5--0.7 mm. Chromosomes: 2n=14.
Ecology: Wet areas in forest, stream or lake margins; Elevation: < 3500 m. Bioregional Distribution: NW, CaR, SN, CCo, MP; Distribution Outside California: to Alaska, Rocky Mountains. Flowering Time: Jul--Sep
Unabridged Synonyms: Puccinellia californica (Beetle) Munz; Puccinellia pauciflora (J. Presl) Munz
Jepson eFlora Author: Jerrold I. Davis
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Botanical illustration including Torreyochloa pallida var. pauciflora

botanical illustration including Torreyochloa pallida var. pauciflora


Citation for this treatment: Jerrold I. Davis 2012, Torreyochloa pallida var. pauciflora, in Jepson Flora Project (eds.) Jepson eFlora, eflora_display.php?tid=67197, accessed on January 28, 2020.

Citation for the whole project: Jepson Flora Project (eds.) 2020, Jepson eFlora,, accessed on January 28, 2020.

Torreyochloa pallida var. pauciflora
click for enlargement
© 2005 Steve Matson
Torreyochloa pallida var. pauciflora
click for enlargement
© 2005 Steve Matson
Torreyochloa pallida var. pauciflora
click for enlargement
© 2005 Steve Matson
Torreyochloa pallida var. pauciflora
click for enlargement
© 2011 Steve Matson
Torreyochloa pallida var. pauciflora
click for enlargement
© 2016 Vernon Smith
Torreyochloa pallida var. pauciflora
click for enlargement
© 2011 Steve Matson

More photos of Torreyochloa pallida var. pauciflora in CalPhotos

Geographic subdivisions for Torreyochloa pallida var. pauciflora:
NW, CaR, SN, CCo, MP
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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.
View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

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 (fruiting time in some monocot genera).