Jepson eFlora: Taxon page
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Viola primulifolia subsp. occidentalis

Higher Taxonomy
Family: ViolaceaeView Description 

Habit: Annual, perennial herb, [small shrub, tree, vine], from caudices, taproots, rhizomes, or stolons; hairs 0 or simple. Stem: 0 or prostrate to erect. Leaf: basal, cauline, or both, alternate, [opposite], simple to compound, petioled; stipules generally small; blade linear to round, entire to toothed or lobed. Inflorescence: flowers 1 [raceme], axillary or scapose; peduncle bractlets 2, generally alternate. Flower: bisexual, bilateral [radial]; sepals 5, free, basal lobes present [0], generally not prominent; petals 5, free, lowest often largest, base +- elongated into a spur; stamens 5, alternate petals, filaments short, wide, with large in-pointing hairs, lowest 2 anthers with basal nectaries extending into petal spur; ovary superior, chamber 1, placentas parietal, 3, ovules [1] generally many, style 1, often enlarged distally, stigma often oblique or hooked, hairy or not. Fruit: capsule [berry], 3-valved, loculicidal, explosively dehiscent or not. Seed: generally with outgrowth, attractive to ants.
Genera In Family: 23 genera, 830 species: worldwide, generally temperate, tropics (especially higher elevations). Note: Lengths of lowest petal including spur.
eFlora Treatment Author: R. John Little
Scientific Editor: Thomas J. Rosatti.
Genus: ViolaView DescriptionDichotomous Key

Common Name: VIOLET
Leaf: generally deciduous. Flower: sepals +- equal, entire; petals unequal, lowest generally largest, with spur generally < 3 [20] mm, lateral 2 equal, generally spreading, upper 2 equal, erect or reflexed, overlapped or not, lateral 2 generally, others sometimes with beard of variously shaped hairs basally; cleistogamous flowers generally present, petals 0. Fruit: ovoid to oblong, hairy or not. Seed: 8--75.
Species In Genus: +- 500 species: temperate, worldwide, Hawaii, Andes. Etymology: (Latin: classical name) Note: Important orns including Viola odorata, Viola tricolor L. (Johnny-jump-up, wild pansy), Viola ×wittrockiana Gams (garden pansy).

Viola primulifolia L. subsp. occidentalis (A. Gray) L.E. McKinney & R.J. Little
Habit: Perennial herb to 20 cm, from thin rhizomes, stoloned in summer, generally glabrous or sparsely hairy on petioles, leaf bases, or peduncles. Stem: 0. Leaf: simple, basal, prostrate to ascending, petiole 1--10 cm, blade 1.5--7 cm, 1--3 cm wide, lanceolate, narrowly ovate, or elliptic, crenate to serrate, generally not ciliate, base generally tapered, tip acute or rounded. Inflorescence: scapose; peduncle 3--12 cm. Flower: sepals ovate to lanceolate, not ciliate, often purple-spotted; petals white, lower 3 veined purple, lateral 2 bearded with cylindric or club-shaped hairs, lowest 10--14 mm; cleistogamous flowers 0. Fruit: 5--8 mm, elliptic, glabrous. Seed: 1.5--2 mm, beige to bronze. Chromosomes: 2n=24.
Ecology: Marshes, bogs often with Darlingtonia; Elevation: 100--500 m. Bioregional Distribution: nw KR (near Gasquet, Del Norte Co.); Distribution Outside California: southwestern Oregon. Flowering Time: Apr--Sep
eFlora Treatment Author: R. John Little
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

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Next taxon: Viola purpurea

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botanical illustration including Viola primulifolia subsp. occidentalis


Citation for this treatment: R. John Little 2016. Viola primulifolia subsp. occidentalis, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 03, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 03, 2016.

Viola primulifolia subsp. occidentalis
click for enlargement
© 2008 Keir Morse
Viola primulifolia subsp. occidentalis
click for enlargement
© 2007 John Game
Viola primulifolia subsp. occidentalis
click for enlargement
© 2008 Keir Morse
Viola primulifolia subsp. occidentalis
click for enlargement
© 2008 Keir Morse

More photos of Viola primulifolia subsp. occidentalis in CalPhotos

Geographic subdivisions for Viola primulifolia subsp. occidentalis:
nw KR (near Gasquet, Del Norte Co.);
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.
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.