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The ability to control intercellular ice formation during freezing is critical to the survival of freeze-tolerant plants. [3] If intracellular ice forms, it could be lethal to the plant when adhesion between cellular membranes and walls occur. The process of freezing tolerance through cold acclimation is a two-stage mechanism: [4]
The flower of Viola reichenbachiana is bisexual, containing both male and female reproductive structures. [4] It has 3 or 5 narrow, non-overlapping petals that are a signature dull purple. [1] [4] The flower typically has 5 small, pointed sepals, 5 stamens, and 1 carpel. [1] These flowers can range from 1.5 to 2 cm across. [4]
This is a list of species in the plant genus Viola, often known as violets or pansies. Viola is the largest genus in the family Violaceae, containing over 680 species. [1] Although similarly named, neither African violets nor dogtooth violets are closely related to the true violas.
Viola adunca is a species of violet known by the common names hookedspur violet, early blue violet, sand violet, and western dog violet. It is native to meadows and forests of western North America, Canada, and the northern contiguous United States.
العربية; Asturianu; Azərbaycanca; Беларуская; Български; Bosanski; Català; Cebuano; Dansk; Español; Esperanto; فارسی; Français; Gaelg
Prairie violet grows 5–30 cm (2.0–11.8 in) tall with violet flowers and between 2–11 deeply divided leaves. It is an acaulescent violet, meaning it lacks leaves on the flowering stems. The leaves have 5–9 lanceolate to linear lobes, growing up to 7 cm (2.8 in) long and 8 cm (3.1 in) across. Prairie violet flowers between March and June.
Most of the species are found in three large genera, Viola, Rinorea and Hybanthus. The other genera are largely monotypic or oligotypic. The genera are grouped into four clades within the family. The species are largely tropical or subtropical but Viola has a number of species in temperate regions. Many genera have a very restricted distribution.
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. [1] Young leaves and flower buds are edible, raw or cooked, but the yellow flowers can cause diarrhoea. [2]
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