Difference between revisions of "Viola lithion"
Brittonia 44: 300, fig. 1A – D. 1992.
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|distribution=Nev.;Utah. | |distribution=Nev.;Utah. | ||
|discussion=<p>Of conservation concern.</p><!-- | |discussion=<p>Of conservation concern.</p><!-- | ||
| − | --><p>Viola lithion is known only from the White Pine Range in Nevada and the Pilot Range straddling the Nevada-Utah border. It is related to V. canadensis and V. flettii.</p> | + | --><p><i>Viola lithion</i> is known only from the White Pine Range in <i>Nevada</i> and the Pilot Range straddling the <i>Nevada</i>-Utah border. It is related to <i>V. canadensis</i> and <i>V. flettii</i>.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Viola lithion | name=Viola lithion | ||
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|authority=N. H. Holmgren & P. K. Holmgren | |authority=N. H. Holmgren & P. K. Holmgren | ||
|rank=species | |rank=species | ||
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|publication year=1992 | |publication year=1992 | ||
|special status=Conservation concern;Endemic | |special status=Conservation concern;Endemic | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V6/V6_231.xml |
|genus=Viola | |genus=Viola | ||
|species=Viola lithion | |species=Viola lithion | ||
Latest revision as of 22:19, 5 November 2020
Plants perennial, caulescent, not stoloniferous, 5–15 cm. Stems 1–3, ascending to erect, glabrous, on caudex from fleshy rhizome. Leaves basal and cauline; basal: 1–4; stipules unknown; petiole 1–10 cm, glabrous, sometimes finely puberulent; blade broadly ovate or deltate to broadly deltate, 1–2.5(–2.9) × 0.6–2.2(–2.6) cm, base usually cordate to truncate, rarely rounded, margins crenate-dentate, eciliate, apex acute, surfaces glabrous; cauline similar to basal except: stipules lanceolate, margins usually fimbriate-toothed, sometimes entire, apex attenuate or acute; petiole 1.1–3.7 cm, sometimes finely puberulent; blade ovate to deltate, 0.7–2.2 × 0.4–1.2 cm, base sometimes rounded on distal blades. Peduncles 3–6(–10) cm, glabrous. Flowers: sepals lanceolate, margins eciliate, auricles 0.5–1 mm; petals blue to pale violet on both surfaces with yellow area basally, lower 3 purple-veined, lowest with yellow area, lateral 2 bearded, lowest 5.5–11 mm, spur white to pale violet, gibbous, 0.5–1.3 mm; style head bearded; cleistogamous flowers unknown. Capsules subglobose, ca. 5 mm, glabrous. Seeds dark brown, ca. 1.8 mm.
Phenology: Flowering Jun–Aug.
Habitat: Seasonally wet cracks and crevices, narrow ledges of rock outcrops, shaded northeast-facing avalanche chutes, cirque headwalls, subalpine conifer zone
Elevation: 2300–3100 m
Discussion
Of conservation concern.
Viola lithion is known only from the White Pine Range in Nevada and the Pilot Range straddling the Nevada-Utah border. It is related to V. canadensis and V. flettii.
Selected References
None.