Karvasäikeestä

Karvasäikeestä, scientific name *Trichodesma*, is a genus of flowering plants belonging to the Boraginaceae family. These plants are native to tropical and subtropical regions across Africa, Asia, and Australia. The genus is characterized by its hairy, bristly foliage, which gives rise to the common name "carprag" or "hairy-wort" in some regions.

Species within the *Trichodesma* genus are typically annual or perennial herbs. They often feature rough, ovate to lanceolate leaves arranged alternately on the stem. The flowers are usually blue or purplish, with five petals and a distinctive star-like shape, though white or pink varieties exist. These flowers are borne in cymes or axillary clusters. The fruit is a schizocarp, dividing into four nutlets.

*Trichodesma* species are often found in disturbed habitats, such as roadsides, fields, and wastelands, but can also occur in grasslands and savannas. Some species have traditional medicinal uses in their native regions, though scientific research into their pharmacological properties is ongoing. The genus comprises several species, with *Trichodesma africana* and *Trichodesma indicum* being among the more widely recognized. Despite their widespread distribution, they are not typically cultivated as ornamental plants, though their wildflowers can be attractive. The hairy nature of the plants serves as a defense mechanism against herbivores.