Humans are driving a rare Texas plant that serves as an important food source for bees and butterflies "to the edge of extinction"

Prostrate milkweed, a rare plant native to Texas and northeastern Mexico, is part of an import support system for bees and monarch butterflies. But now, the U.S. Fish and Wildlife Service is considering naming the plant an endangered species as humans destroy their critical habitats. 

USFWS proposed the endangered species listing on Monday, saying they made their proposition based on the "best available status." 

Chris Best, a USFWS botanist in Texas, said that the prostrate milkweed's flowers "attract and support native pollinators," including large bees and wasps, and that it serves as a host plant for monarch butterflies.