WorldFloraDB - Viola lyallii

Characteristics

Taprooted perennial; stems weak, prostrate to ascending, glabrous, 10-20 cm long. Basal and stem lvs all similar, glabrous, 1-2-(3.5) × 1-2-(4) cm, broadly ovate-cordate to reniform, obtuse to subacute, with 5-10 very shallow crenations each side; stipules linear, distantly glandular-toothed, 3-7 mm long; petiole (1)-2-5-(15) cm long. Peduncles erect, glabrous; bracts linear, entire or distantly toothed, 3-6 mm long. Fls 1-1.5 cm diam. Sepals lanceolate, acute, 3-4 mm long; appendages c. 0.5 mm long. Petals white with purple veins, > sepals, the lateral bearded; spur very short and broad, hardly > sepal appendages. Style straight, 1.5 mm long; stigma capitate, slightly curved. Capsule ellipsoid, glabrous, c. 1 cm long. Seeds obovoid, pale greenish brown, 1.5 mm long.

More

Glab. tufted herb up to 15 cm. tall; stems sts branched, sts producing off-set plants; main roots deeply descending; stock slender to rather stout, sts multicipital. Lvs on petioles up to 10 cm. long; stipules linear to linear-spathulate, obtuse, up to 1 cm. long. Lamina (5 mm.)-1-3 × (8 mm.)-1-3 cm., crenulate, broad ovate to suborbicular, deeply to shallowly cordate at base. Fls 1-2 cm. diam., on slender flattened ped-uncles up to ± 15 cm. long; bracts linear-lanceolate to narrow-oblong, entire or nearly so, placed above .middle, often close under fls. Sepals linear to narrow-oblong, often acuminate, 3-5 mm. long; petals white streaked with lilac and yellow ± 1 cm. long. Capsule 7-9 mm. long; seeds pale.

Life form	perennial
Growth form	herb
Growth support	-
Foliage retention	evergreen
Sexuality	hermaphrodite
Pollination	-
Spread	-
Mature width (meter)	-
Mature height (meter)	0.15
Root system	tap-root
Rooting depth (meter)	-
Root diameter (meter)	-
Flower color
Blooming months	-
Fruit color	-
Fruiting months	-
Nitrogen fixer	-
Photosynthetic pathway	-

Environment

Light	-
Soil humidity	-
Soil texture	-
Soil acidity	-
Soil nutriment	-
Hardiness (USDA)	-

Usage

Uses	-
Edible	-
Therapeutic use	-
Human toxicity	-
Animal toxicity	-

Cultivation

Mode	-
Germination duration (days)	14 - 21
Germination temperacture (C°)	18 - 23
Germination luminosity	dark
Germination treatment	stratification
Minimum temperature (C°)	-
Optimum temperature (C°)	-
Size	-
Vigor	-
Productivity	-