Английская Википедия:Asclepias cinerea

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Шаблон:Speciesbox Asclepias cinerea, also known as Carolina milkweed or ashy milkweed, is a herbaceous perennial plant species in the genus Asclepias. It is native to the United States where its range is concentrated in the Southeast.

Etymology

Файл:Asclepias cinerea by Siddarth Machado.jpg

Flower

The genus Ascelpias is named after the Ancient Greek god of medicine, Asclepius. The specific epithet, cinerea, is from the Latin cinereus, meaning ash-colored or ash-gray. The common name, milkweed, comes from the white, milky latex that the plant secretes when the stem or leaves are injured.

Description

Файл:Carolina milkweed leaves by Scott Allen Davis.jpg

A. cinerea leaves

Asclepias cinerea is a perennial herb that is grass-like in appearance with a thin, smooth stem that reaches Шаблон:Cvt in height. Leaves are Шаблон:Cvt long, linear, narrow, glabrous, and oppositely arranged. Flowers are sparse and loosely arranged in axillary or terminal umbels. Each flower has a five-lobed corolla (petals) that are flat or reflexed and range from ashy-gray, pale violet, to pale rose. The fruit is a follicle that is smooth, slender, and Шаблон:Cvt long. When the follicle matures, it splits open releasing seeds. Each seed has white fluffy hairs (pappus) attached that aid in wind dispersal.

Ecology

Like other milkweed species, A. cinerea is a host plant for the monarch (Danaus plexippus) and queen (Danaus gilippus) butterflies. It is also an important nectar source for other butterflies, bees, wasps, and beetles.

Distribution and habitat

Файл:"Carolina milkweed habitat" by Scott Allen Davis.jpg

A. cinerea in mesic flatwoods

This species is found in the Southeastern Coastal Plain from eastern South Carolina, down to the Florida panhandle, and west to southern Mississippi. It was also historically found in North Carolina, but is now extirpated. Its native habitats include pine-wiregrass savannas, flatwoods, sandhills, bogs, and pine-scrub oak ridges.

Conservation status

A. cinerea is listed as an S1 species (Critically Imperiled) by NatureServe in Alabama and South Carolina. Globally it is listed as a G4 species (Apparently Secure), which means there is a fairly low risk of extinction, but there is possible cause for some concerns due to local recent declines, threats, or other factors.