Viola selkirkii
Viola glabella
great-spur or long-spur or Selkirk's violet, great-spur violet, Selkirk's violet, violette de Selkirk
pioneer violet, smooth yellow violet, stream or smooth yellow or yellow wood or wood or smooth yellow woodland violet, stream violet, violette glabre, yellow wood violet
1–3, erect or prostrate, leafless proximally, leafy distally, glabrous or finely puberulent, on caudex from fleshy rhizome.
basal, 2–12, prostrate to ascending;
stipules linear-lanceolate, margins entire, apex acute;
petiole 1.5–7 cm, not winged, glabrous or pubescent;
blade unlobed, usually ovate, rarely orbiculate, 1–5 × 1–5 cm, base cordate, margins crenate to crenulate or serrate, eciliate, apex rounded to acute, surfaces glabrous or sometimes pubescent abaxially, strigose adaxially.
basal and cauline;
basal: 0–4(–7);
stipules ovate to obovate, margins entire, crenate, or serrate, usually glandular, apex acute to obtuse;
petiole 7–27.5 cm, glabrous or puberulent;
blade usually reniform to ovate, sometimes orbiculate, 3.3–8.5 × 2–9.3 cm, base cordate, margins crenate to serrate, ciliate or eciliate, apex acute to obtuse, mucronulate, surfaces glabrous or finely puberulent;
cauline similar to basal except: usually restricted to distal ends of naked stems;
stipules ovate to oblong, margins erose or subserrate, often glandular, apex acute to acuminate;
petiole 0.2–2.9 cm, glabrous or finely puberulent;
blade ovate to deltate, 1.4–5.7 × 0.8–4.7 cm, base cordate to truncate, margins crenate to ± serrate, ciliate (sometimes limited to proximal half), apex acute.
3–6 cm, glabrous or pubescent.
2–8 cm, glabrous or pubescent.
sepals lanceolate to ovate-lanceolate, margins eciliate, auricles 1–2 mm;
petals light violet on both surfaces, lower 3 white basally and dark violet-veined, lateral 2 beardless, lowest 8–13 mm, spur pale to dark violet, elongated, 4–7 mm;
style head beardless; cleistogamous flowers on prostrate to ascending peduncles.
sepals linear-lanceolate, margins eciliate, auricles 0.5–1 mm;
petals deep lemon-yellow on both surfaces, lower 3 and sometimes upper 2 brownish purple-veined, lateral 2 bearded, lowest 6–18 mm, spur yellow to greenish, gibbous, 0.5–2 mm;
style head bearded; cleistogamous flowers axillary.
ovoid to ellipsoid, 4–8 mm, glabrous.
ovoid to ellipsoid, 7–13 mm, glabrous.
brown, 1–2 mm.
light to dark brown, shiny, 2–2.2 mm.
= 24.
= 24.
Viola selkirkii
Viola glabella
Viola selkirkii occurs on the southwestern coast of Greenland, north to 63ºN (L. Brouillet, pers. comm.). Presence of V. selkirkii in the Northwest Territories and Nunavut is considered doubtful (L. Brouillet et al., http://canadensys.net/vascan). K. W. Allred (2008) said that V. selkirkii was considered by W. C. Martin and C. R. Hutchins (1980) to be expected in New Mexico.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Viola glabella is similar in overall appearance to V. pubescens. The cauline leaves are sometimes described as appearing only near the apex of the stem (P. A. Munz 1959), but often a leaf occurs from a node on the stem below the apex.
Viola californica was described from collections made in Humboldt and Trinity counties, California, and may have arisen as a hybrid between V. glabella and V. lobata var. integrifolia. It is apparently limited to Abies concolor forests above 1520 m (M. S. Baker 1953). Study of V. californica is needed to determine if taxonomic recognition is warranted.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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