Alcea Alcea Alcea is a genus of about 60 species of flowering plants in the mallow family Malvaceae, commonly known as the hollyhocks. They are native to Asia and Europe. The single species of hollyhock from the Western Hemisphere, the streambank wild hollyhock, belongs to a different genus. Hollyhocks are annual, biennial, or perennial plants usually taking an erect, unbranched form. The herbage usually has a coating of star-shaped hairs. The leaf blades are often lobed or toothed, and are borne on long petioles. The flowers may be solitary or arranged in fascicles or racemes. The notched petals are usually over
Acis rosea (flower stalks) are short, 1–5 mm long. There are two spathes. "Acis rosea" was first described in 1804 by F. Martin, as "Leucojum roseum". In 1829, Robert Sweet transferred it to "Acis". However, "Acis" was not accepted by most botanists, who continued to use a broadly circumscribed "Leucojum". "Acis" was reinstated in 2004, after it was determined on morphological and molecular grounds that the broadly defined genus "Leucojum" was paraphyletic. "Acis rosea" is native to the two western Mediterranean islands of Corsica and Sardinia. It is found in rocky ground, dry pastures and sandy places. "Acis rosea" is cultivated as