Viola odorata
Viola bakeri
English violet, garden violet, sweet blue violet, sweet violet, violette odorante
Baker's violet, yellow prairie violet
1–4, usually erect, sometimes prostrate or decumbent, leafy proximally and distally, usually puberulent, from usually vertical, subligneous rhizome.
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 and cauline;
basal: 1–4;
stipules adnate to petiole, forming 2 linear-lanceolate wings, margins entire, apex of each wing free, acute to acuminate;
petiole 1–15.4 cm, glabrous or puberulent;
blade lanceolate, oblanceolate, or elliptic, rarely ovate, 1.8–8.8 × 0.7–3.9 cm, thin, base attenuate, often oblique, margins usually entire, sometimes with a few sharp teeth or crenulate, ciliate, apex acute to obtuse, mucronulate, surfaces glabrous or puberulent on margins or veins;
cauline similar to basal except: stipules ovate to lanceolate, margins entire or lacerate, sometimes with glandular projections, apex with 2–3 projections;
petiole 1.5–7.5 cm;
blade 1.9–6.7 × 0.5–1.6 cm.
4–15 cm, puberulent.
1.5–11.6 cm, glabrous or pubescent.
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, margins eciliate, auricles 0.5–1 mm;
petals deep lemon-yellow adaxially, upper 2 often brownish purple abaxially, lower 3 dark brown- to brownish purple-veined, lateral 2 sparsely bearded, lowest 6–14 mm, spur yellow, gibbous, 1–2 mm;
style head bearded; cleistogamous flowers axillary.
sometimes purple-flecked, ovoid, 5–8 mm, puberulent.
spherical to ovoid, 5–10 mm, usually glabrous, rarely finely puberulent.
brown, 3–4 mm.
light to medium brown or dark red-brown, 2.6–3.1 mm, elaiosome not covering funiculus.
= 20.
= 48.
Viola odorata
Viola bakeri
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.)
M. S. Baker (1957) wrote that Viola bakeri flowers were often without a brownish tinge on the back. Subsequent collections have shown that the upper two petals of V. bakeri are often brownish purple abaxially and thus this characteristic cannot be used to distinguish V. bakeri from V. praemorsa, as previously done (P. A. Munz 1959; C. L. Hitchcock et al. 1955–1969, vol. 3).
Greene wrote in his description of Viola bakeri that the whole plant was glabrous; he did not mention leaf margins. M. S. Baker (1957) examined the type specimen at UC and apparently was the first to document that its leaf margins are entire. He also noted that under magnification the leaves are ciliate and more or less puberulent. D. M. Fabijan et al. (1987) stated that margins were always entire and ciliate and more or less pubescent throughout. Some collections of V. bakeri
from California have leaves with a sharp point or two on the margin, or crenulations on some portion of the basal or cauline blade margins.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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