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Vascular Plants of California
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Trifolium depauperatum var. depauperatum

Higher Taxonomy
Family: Fabaceae (Leguminosae)View DescriptionDichotomous Key
Habit: Annual to tree. Leaf: generally alternate, generally compound, generally stipuled, generally entire, pinnately veined Inflorescence: generally raceme, spike, umbel or head; or flowers 1--few in axils. Flower: generally bisexual, generally bilateral; hypanthium 0 or flat to tubular; sepals generally 5, generally fused; petals generally 5, free, fused, or lower 2 +- united into keel (see 3, Key to Groups, for banner, wings); stamens 10 or many (or [1], 5, 6, 7, 9), free or fused or 10 with 9 filaments at least partly fused, 1 (uppermost) free; pistil 1, ovary superior, generally 1-chambered, ovules 1--many, style, stigma 1. Fruit: legume, including a stalk-like base (above receptacle) or not. Seed: 1--many, often +- reniform, generally hard, smooth.
Genera In Family: +- 730 genera, 19400 species: worldwide; with grasses, requisite in agriculture, most natural ecosystems. Many cultivated, most importantly Arachis, peanut; Glycine, soybean; Phaseolus, beans; Medicago, alfalfa; Trifolium, clovers; many orns. Note: Unless stated otherwise, fruit length including stalk-like base, number of 2° leaflets is per 1° leaflet. Upper suture of fruit adaxial, lower abaxial. Anthyllis vulneraria L. evidently a waif, a contaminant of legume seed from Europe. Laburnum anagyroides Medik., collected on Mount St. Helena in 1987, may be naturalized. Ceratonia siliqua L., carob tree (Group 2), differs from Gleditsia triacanthos L. in having evergreen (vs deciduous) leaves that are 1-pinnate (vs 1-pinnate on spurs on old stems, 2-pinnate on new stems) with 2--5(8) (vs 7--17) 1° leaflets, commonly cultivated, now naturalized in southern California. Aeschynomene rudis Benth. , Halimodendron halodendron (Pall.) Voss (possibly extirpated), Lens culinaris Medik. are agricultural weeds. Caragana arborescens Lam. only cult. Ononis alopecuroides L. , Sphaerophysa salsula (Pall.) DC. all evidently extirpated. Cercidium moved to Parkinsonia; Chamaecytisus to Cytisus; Psoralidium lanceolatum to Ladeania.
eFlora Treatment Author: Martin F. Wojciechowski, except as noted
Scientific Editor: Martin F. Wojciechowski, Thomas J. Rosatti.
Genus: TrifoliumView DescriptionDichotomous Key

Common Name: CLOVER
Habit: Annual, perennial herb, unarmed. Leaf: generally palmately compound; stipules conspicuous, partly fused to petiole, generally papery or membranous; leaflets generally 3, occasionally 5--9, +- toothed or wavy. Inflorescence: raceme (generally umbel-like), head, or spike, axillary or terminal, generally many-flowered, generally involucred, generally peduncled; inflorescence bracts 0 or forming vestigial ring or involucre; flower bracts present or not. Flower: generally spreading to erect, generally becoming reflexed; corolla generally purple to pale lavender, occasionally yellow, persistent after flower; 9 filaments fused, 1 free. Fruit: generally indehiscent but generally breaking, short, plump, generally enclosed in corolla; base generally stalk-like. Seed: 1--6.
Etymology: (Latin: 3 leaves)
eFlora Treatment Author: Michael A. Vincent & Duane Isely
Reference: Ellison et al. 2006 Molec Phylogen Evol 39:688--705; Vincent 2009 Madroño 56:208
Unabridged Reference: Gillett 1980 Canad J Bot 58:1425--1448; Zohary & Heller 1984 Genus Trifolium
Species: Trifolium depauperatumView Description 

Habit: Annual, generally small, glabrous. Stem: decumbent to erect. Leaf: cauline; lower stipules oblong, upper bristle-tipped; leaflets 0.5--2 cm, narrowly oblong to obovate, entire or toothed, occasionally lobed, tip generally truncate. Inflorescence: head-like, 0.5--1 cm wide, 3--many-flowered. Flower: calyx glabrous; corolla 4.5--9 mm, pink-purple, white-tipped, banner inflated in fruit. Fruit: stalk-like base 0 to short; style generally persistent. Chromosomes: 2n=16.

Unabridged Note: Trifolium depauperatum var. depauperatum, Trifolium depauperatum var. truncatum predominant; study needed.
Trifolium depauperatum Desv. var. depauperatum
Leaf: leaflets occasionally notched at tip or lobed. Inflorescence: involucre vestigial, ring-like. Flower: calyx 2.5--3.5 mm; corolla generally 6--9 mm. Fruit: > style, ovate or oblong; stalk-like base 0.5--1.5 mm. Seed: 2--4.
Ecology: Wet meadows, grassland, roadsides, open spring-moist, heavy soils; Elevation: < 900 m. Bioregional Distribution: NCoR, CaRF, n&c SN, GV, SnFrB; Distribution Outside California: to British Columbia; Chile. Flowering Time: Mar--May
Jepson eFlora Author: Michael A. Vincent & Duane Isely
Reference: Ellison et al. 2006 Molec Phylogen Evol 39:688--705; Vincent 2009 Madroño 56:208
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Botanical illustration including Trifolium depauperatum var. depauperatum

botanical illustration including Trifolium depauperatum var. depauperatum


Citation for this treatment: Michael A. Vincent & Duane Isely 2012, Trifolium depauperatum var. depauperatum, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on January 26, 2023.

Citation for the whole project: Jepson Flora Project (eds.) 2023, Jepson eFlora,, accessed on January 26, 2023.

Trifolium depauperatum var. depauperatum
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© 2003 Steve Matson
Trifolium depauperatum var. depauperatum
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© 2021 Steve Matson
Trifolium depauperatum var. depauperatum
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© 2009 Neal Kramer
Trifolium depauperatum var. depauperatum
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© 2008 Neal Kramer
Trifolium depauperatum var. depauperatum
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© 2004 Carol W. Witham
Trifolium depauperatum var. depauperatum
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© 2006 George W. Hartwell

More photos of Trifolium depauperatum var. depauperatum in CalPhotos

Geographic subdivisions for Trifolium depauperatum var. depauperatum:
NCoR, CaRF, n&c SN, GV, SnFrB
1. You can change the display of the base map layer control box in the upper right-hand corner.
2. County and Jepson Region polygons can be turned off and on using the check boxes.
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).


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).