Viola odorata |
Viola macloskeyi |
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English violet, garden violet, sweet blue violet, sweet violet, violette odorante |
Macloskey's or northern white or small white or smooth white or wild white violet, Macloskey's violet, northern white violet, small white violet, smooth white violet, violette pâle |
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Habit | Plants perennial, acaulescent, stoloniferous, 4–12 cm; stolons green, often rooting at nodes and forming leafy rosettes; rooted rosettes often develop into erect, rhizomatous caudex from which new stolons are produced; rhizome thick, fleshy. | Plants perennial, acaulescent, stoloniferous, 2–10 cm; stolons pale, often rooting and leafy at nodes; rhizome slender, fleshy. |
Leaves | basal (and from stolons), 5–10, ascending to erect; stipules lanceolate to linear-lanceolate, margins fimbriate, projections gland-tipped, apex acute; petiole 2–17 cm, puberulent; blade unlobed, ovate to orbiculate, 1.5–7 × 1.5–5 cm, base cordate, margins crenate, ciliate, apex obtuse to rounded, surfaces puberulent. |
basal, 2–6, ascending to erect; stipules ovate to linear-lanceolate, margins entire or glandular-toothed, apex acute; petiole 1–10 cm, strigose; blade unlobed, reniform to ovate, 1–6.5 × 1–5.5 cm, base broadly or shallowly cordate, margins ± entire or shallowly crenate, eciliate, apex rounded to acute, surfaces usually glabrous, abaxial surfaces sometimes puberulent on proximal 1/2. |
Peduncles | 4–15 cm, puberulent. |
2.5–11(–21) cm, usually glabrous, sometimes villous. |
Flowers | sepals narrow to broadly lanceolate, margins ciliate, auricles 3–4 mm; petals deep to pale blue-violet, pale blue, or white on both surfaces, usually white basally, lateral 2 sparsely to densely bearded, lowest usually purple-veined, 12–22 mm, spur usually same color as petals, elongated, 5–7 mm; style head beardless; cleistogamous flowers on prostrate or ascending peduncles. |
sepals lanceolate to ovate, margins eciliate, auricles 0.5–2 mm; petals white on both surfaces, lower 3 purple-veined, lateral 2 bearded, rarely beardless, lowest 6–12 mm, spur white, gibbous, 1–2.5 mm; style head beardless; cleistogamous flowers on ascending peduncles. |
Capsules | sometimes purple-flecked, ovoid, 5–8 mm, puberulent. |
ovoid, 5–9 mm, glabrous. |
Seeds | brown, 3–4 mm. |
beige to bronze, 1–1.5 mm. |
2n | = 20. |
= 24. |
Viola odorata |
Viola macloskeyi |
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Phenology | Flowering Jan–May. | Flowering Mar–Sep. |
Habitat | Lawns, roadsides, clearings, riparian habitats, parks, urban areas | Bogs, wet meadows, seeps, lake margins, stream banks, floodplains, swampy woods, mesic roadside depressions, often among mosses |
Elevation | 0–1700 m (0–5600 ft) | 0–3600 m (0–11800 ft) |
Distribution |
CA; CT; ID; IL; MA; ME; MI; NC; NY; OH; OR; PA; RI; UT; WA; WI; BC; NS; ON; QC; Eurasia [Introduced in North America; introduced also in Australia]
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AZ; CA; CO; CT; DE; GA; IA; ID; IL; IN; MA; MD; ME; MI; MN; MO; MT; NC; ND; NH; NJ; NV; NY; OH; OR; PA; RI; SC; SD; TN; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NL; NS; NT; NU; ON; PE; QC; SK; SPM
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Discussion | Viola odorata occurs in small colonies; individual plants are interconnected by stolons. The flowers of Viola odorata are noted for their fragrance; some plants are more fragrant than others. It is native to Eurasia and assumed to be introduced in North America where it is usually found in areas associated with human habitation, including parks, lawns, and roadsides. A substantial industry revolved around the commercial production of violets in England, France, and the United States from prior to 1895 and into the 1900s (R. E. Coombs 2003). Viola odorata is sometimes found in remote locations not easily explained by anthropogenic influence, for example, Clearwater Mountains, Idaho. It is available through the nursery trade and is cultivated as a garden plant and occasionally reported as an escape. Viola odorata is grown in southern France for essential oils used in perfumes, flavorings, and toiletries, and also for the production of the sweet, violet-colored liqueur called parfait amour (V. H. Heywood 1978). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Viola macloskeyi was described by Banks in 1824 as V. rotundifolia var. pallens, from specimens collected by Banks in Labrador. E. Brainerd made the combination V. pallens in 1905 and later (1924) detailed its troublesome nomenclatural history. Viola macloskeyi was described in 1895 by F. E. Lloyd based on specimens collected at the base of Mount Hood, Oregon. M. S. Baker (1953) placed V. macloskeyi as a subspecies of V. pallens. He later (1953b) corrected that change based on priority and thus the taxon became known as V. macloskeyi subsp. pallens. N. H. Russell (1955) maintained that status, separating subspp. macloskeyi and pallens on the wider, spreading basal leaf lobes of subsp. pallens. McKinney, after examining specimens of both taxa, including types, concluded that the differences have been exaggerated and fall within the range of variation of a single species. Viola macloskeyi occurs in small colonies; individual plants are interconnected by stolons. In parts of its range, Viola macloskeyi often shares habitat with V. renifolia; it may be difficult to distinguish the two. The stolons of V. macloskeyi are useful for identification during summer months; V. renifolia plants lack stolons. Patterns of indument can be useful; V. renifolia is usually hairy and V. macloskeyi is usually glabrous (petioles sometimes pubescent). Viola macloskeyi reportedly hybridizes with V. primulifolia var. primulifolia (= V. ×mollicula House). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 6, p. 140. | FNA vol. 6, p. 137. |
Parent taxa | Violaceae > Viola | Violaceae > Viola |
Sibling taxa | ||
Synonyms | V. blanda subsp. macloskeyi, V. blanda var. macloskeyi, V. macloskeyi subsp. pallens, V. macloskeyi var. pallens, V. pallens, V. pallens subsp. macloskeyi, V. pallens var. subreptans, V. rotundifolia var. pallens | |
Name authority | Linnaeus: Sp. Pl. 2: 934. (1753) | F. E. Lloyd: Erythea 3: 74. (1895) |
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