Alcea three centimeters wide and may be pink, white, purple, or yellow. The fruit is a schizocarp, a dry disc divided into over 15 sections that contain seeds. There are about 60 species of "Alcea", including: Hollyhocks are popular garden ornamental plants. They are easily grown from seed. Breeds with red flowers attract hummingbirds and butterflies. Cultivars have been bred, especially from "A. rosea". They include the double-flowered 'Chater's Double', the raspberry-colored 'Creme de Cassis', and 'The Watchman', which has dark, nearly black, maroon flowers. The stems of hollyhocks can be used as firewood, and the roots have been used medicinally.
Clonostachys rosea f. rosea penetrate, and grow inside the hyphae and conidia of "B. cinerea". Nematodes are infected by "C. rosea" when the fungus' conidia attach to their cuticle and germinate, going on to produce germ tubes which penetrate the host's body and kill it. In 2008 an isolate of "Clonostachys rosea" (NRRL 50072) was identified as producing a series of volatile compounds that are similar to some existing fuels. However, the taxonomy of this isolate was later revised to "Ascocoryne sarcoides". Clonostachys rosea f. rosea Clonostachys rosea f. rosea, also known as Gliocladium roseum, is a species of fungus in the family Bionectriaceae.