What is "schwalbea"

Schwalbea is a genus of flowering plants in the family Orobanchaceae, with a single species, Schwalbea americana, or American chaffseed, an erect, hemiparasitic, perennial herb that grows 1.0-2.6 ft (0.3-0.8 m) in height. Although it is a root-hemiparasite (partially dependent on its host), the species is not host-specific and may parasitize a variety of trees, shrubs, and herbs. April through June flowers are pollinated by bees, with fruits maturing in July–September. Fruit dispersal is poorly understood, but fruits are likely wind dispersed in close proximity to the parent. Requirements for seed germination and seedling establishment are unknown, but the species is considered shade-intolerant. Fire may play a role in establishing the parasite-host connection.this plant also is endangered of being extinct.