Viola pinetorum |
Viola sheltonii |
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goosefoot yellow violet, mountain yellow violet, pine violet |
cut-leaf violet, fan violet, Shelton's violet |
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Habit | Plants perennial, caulescent, not stoloniferous, 3–18 cm, cespitose or not. | Plants perennial, caulescent, not stoloniferous, 3–27 cm. | ||||
Stems | 1–3, prostrate or erect, leafy proximally and distally, puberulent or canescent to gray-tomentose, sometimes glabrous, on caudex from subligneous rhizome. |
1–3, prostrate, decumbent, or erect, glabrous or sparsely puberulent, from short, often vertical, deep-seated or usually shallow, subligneous rhizome. |
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Leaves | basal and cauline; basal: 1–4; stipules adnate to petiole forming 2 linear-lanceolate wings, margins entire or laciniate, apex of each wing free, tips usually filamentous; petiole 2.3–9.5 cm, puberulent or canescent; blade purple-tinted abaxially or not, usually linear to narrowly lanceolate, oblanceolate or obovate, or lanceolate-elliptic, rarely ovate, 1.3–5 × 0.3–2.5 cm, base attenuate, margins usually lacerate, dentate, or serrate, sometimes entire, usually undulate, ciliate, apex acute, mucronulate, surfaces puberulent to canescent or gray-tomentose; cauline similar to basal except: stipules lanceolate, oblanceolate, or linear-oblong, margins entire or lacerate, apex acute to acuminate; petiole 0.9–8.3 cm; blade 2.8–9.6 × 0.3–1.4 cm, length 4–11 times width. |
basal and cauline; basal: 1–3, palmately compound, leaflets 3; stipules lanceolate-ovate, margins laciniate with gland-tipped projections, apex acute to acuminate; petiole 8.6–21 cm, glabrous or sparsely puberulent; blade reniform or ovate to ± orbiculate, 2–7 × 2–11 cm, coriaceous, base tapered, each leaflet cleft or dissected into 3 ± obovate lobes, each lobe further divided into 2–3 oblanceolate, pandurate, spatulate, oblong, lanceolate, or elliptic, lobes 2–10 mm wide, margins entire, ciliate or eciliate, apex acute to obtuse, mucronulate, surfaces glabrous or sparsely puberulent; cauline similar to basal except: stipules ovate to lanceolate, margin projections gland-tipped or eglandular, apex long-acuminate; petiole 5.5–12 cm; blade 1.2–6.3 × 1.2–10.5 cm. |
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Peduncles | 2.9–11.5 cm, puberulent or canescent. |
5–19 cm, glabrous or sparsely puberulent. |
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Flowers | sepals lanceolate, margins ciliate, auricles 0.5–1 mm; petals deep lemon-yellow adaxially, upper 2 red- to purple-brown abaxially, lower 3 dark brown-veined, lateral 2 bearded, lowest 5–12 mm, spur color same as petals, gibbous, 1.5–3 mm; style head bearded; cleistogamous flowers axillary. |
sepals lanceolate, margins ciliate or eciliate, auricles 0.5–1 mm; petals deep lemon-yellow adaxially, upper 2 dark brown to brownish purple abaxially, lower 3 and sometimes upper 2 brownish purple-veined, lateral 2 bearded or beardless, lowest 7–18 mm, spur yellowish with brownish purple specks, gibbous, 1–2 mm; style head bearded; cleistogamous flowers axillary. |
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Capsules | ovoid, 3.5–7 mm, puberulent. |
oblong to ovoid, 6–8 mm, glabrous or puberulent. |
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Seeds | medium to dark brown, 2–3.5 mm. |
brownish, shiny, ca. 2.5 mm. |
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2n | = 12. |
= 12. |
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Viola pinetorum |
Viola sheltonii |
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Phenology | Flowering Mar–Jul. | |||||
Habitat | Red fir, yellow pine, mixed evergreen, chaparral, oak woodlands, rich or gravelly soil | |||||
Elevation | 800–2500 m (2600–8200 ft) | |||||
Distribution |
CA
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CA; CO; ID; OR; WA
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Discussion | Flowers of Viola pinetorum have been observed to close up in late afternoon then fully reopen the following morning. Although E. O. Wooton and P. C. Standley (1915) reported Viola pinetorum from New Mexico, the plant was probably V. nuttallii. K. W. Allred (2008) noted that V. pinetorum occurs in California; he did not recognize it in New Mexico. Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
The cleistogamous flowers of Viola sheltonii are borne on long, prostrate peduncles usually buried in duff around the plant. Mature cleistogamous capsules are usually hidden and the dehisced seeds remain close to the parent plant. Some populations of V. sheltonii produce only cleistogamous flowers (D. Klaber 1976). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 6, p. 144. | FNA vol. 6, p. 158. | ||||
Parent taxa | Violaceae > Viola | Violaceae > Viola | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | V. purpurea var. pinetorum | V. sheltonii var. biternata | ||||
Name authority | Greene: Pittonia 2: 14. (1889) | Torrey: in War Department [U.S.], Pacif. Railr. Rep. 4(5): 67, plate 2. (1857) | ||||
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