Jepson Flora Project: Jepson Interchange    

 
link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.

VIOLACEAE

VIOLET FAMILY

R. John Little

Annual to shrub or vine (generally per in CA)
Leaves basal, cauline, or both, generally alternate, entire to compound; stipules generally small
Inflorescence: head, raceme, panicle, or flowers solitary; peduncle bractlets 2
Flower generally bisexual, generally bilateral; sepals 5, free to slightly fused, generally persistent; petals 5, free, lowest generally spurred or pouched at base; stamens generally 5, alternate petals, filaments short, wide, anthers surrounding ovary, adherent or fused, often with nectaries at base, often with membranous appendage at tip; ovary superior, chamber 1, placentas 3, parietal, ovules generally many, style 1
Fruit: generally capsule, 3-valved, generally explosively dehiscent
Seeds generally appendaged
Genera in family: 15 genera, 600 species: generally temp, worldwide; some cultivated as ornamental; some Eur species medicinally useful as emetics, diuretics, purgatives
Reference: [Brizicky 1961 J Arnold Arbor 42:321–333]

VIOLA

VIOLET

Annual or perennial herb < 35 cm, glabrous to hairy
Leaf entire to compound
Inflorescence: flower generally solitary, axillary
Flower bilateral; sepals subequal, appendaged at base; petals unequal, lowest spurred or pouched at base, lateral 2 equal, generally spreading, often hairy near base, upper 2 equal, erect; lower 2 stamens with nectaries projecting into spur
Fruit: capsule, ovoid to oblong
Etymology: (Latin: ancient name)
Reference: [Clausen 1964 Madroño 17:173–197]
Cleistogamous flowers generally present. Seeds often dispersed by ants that feed on seed-appendages.

Native

V. sheltonii Torr.

Plant 3–27 cm
Stems clustered on short, erect rhizome
Leaves basal and cauline, ternate; petiole < 210 mm; blade < 70 mm, generally ± reniform, generally glabrous, leaflets dissected, segments 1–10 mm wide, ± linear to obovate, generally glabrous
Inflorescence: peduncle < 180 mm
Flower: petals deep lemon-yellow, lowest (including spur) 7–18 mm, lower 3 veined brown-purple, lateral 2 bearded with club-shaped hairs, upper 2 brown-purple outside
Fruit 6–8 mm, glabrous to puberulent
Chromosomes: n=6
Ecology: Fir, pine, or oak woodlands, rich or gravelly soil
Elevation: 800–2500 m.
Bioregional distribution: Northwestern California, n High Sierra Nevada, San Francisco Bay Area, South Coast Ranges, n Western Transverse Ranges, San Bernardino Mountains, nw Peninsular Ranges, Warner Mountains
Distribution outside California: to Washington, Colorado
Horticultural information: TRY; DFCLT.

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bioregional map for VIOLA%20sheltonii being generated
 
N.B. The distribution depicted here differs from that given in The Jepson Manual (1993)
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Viola sheltonii
Retrieve dichotomous key for Viola
Overlay Consortium of California Herbaria specimen data by county on this map
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