''Viola glabella'', the stream violet or pioneer violet, is usually found along streams or in moist woods in northeastern

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area ...

and northwestern

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

. Its petals are yellow on both sides, with the exception of dark purple nectar guides on the front of the lower three petals. The flowers arise from the same stems as the leaves. ''Viola glabella'' is a

perennial A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also wide ...

herb, growing to 0.1 m (0ft 4in) by 0.2 m (0ft 8in) and blooming from April to July. The plant is

deciduous In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, aft ...

and dies back completely to its roots during Autumn. ''Viola glabella'' prefers moist, well-drained soil and can grow in part shade. Acidic and neutral soils are suitable for ''Viola glabella'', which prefers a pH between 6 and 6.5, and becomes chlorotic if the pH is too high. Young leaves and flower buds are edible, raw or cooked, but the yellow flowers can cause

diarrhoea Diarrhea, also spelled diarrhoea, is the condition of having at least three loose, liquid, or watery bowel movements each day. It often lasts for a few days and can result in dehydration due to fluid loss. Signs of dehydration often begin wi ...

References

*Hitchcock, Charles Leo and Cronquist, Arthur. ''Flora of the Pacific Northwest.'' University of Washington Press, . *Kozloff, Eugene N. ''Plants and Animals of the Pacific Northwest.'' . *Pojar, Jim and MacKinnon, Andy. ''Plants of Coastal British Columbia.'' Lone Pine Publishing, .

External links

Jepson Manual TreatmentWashington Burke MuseumPhoto gallery
{{Taxonbar, from=Q12847265

glabella The glabella, in humans, is the area of skin between the eyebrows and above the nose. The term also refers to the underlying bone that is slightly depressed, and joins the two brow ridges. It is a cephalometric landmark that is just superior to ...