Stephen G. Weller

Stenogyne campanulata is a rare species of flowering plant in the mint family known by the common name Kalalau Valley stenogyne. It is endemic to Hawaii, where it is known only from the Kalalau Valley on the island of Kauai. It is a federally listed endangered species of the United States. This plant was first discovered in 1986 growing on a Kalalau Valley cliff in Na Pali Coast State Park, and it was described to science as a new species in 1989. As of 2006 there was only a single population containing about 50 individuals. The plant is threatened by habitat degradation caused by feral pigs

Schiedea obovata is a species of flowering plant in the family Caryophyllaceae. It is a shrub endemic to the island of Oahu in the Hawaiian Islands, where it grows in lowland moist forests from 550 to 800 meters elevation. There are only 38 plants in the single known population, and the species is assessed as Critically Endangered. It is threatened by habitat loss.

Schiedea attenuata is a rare species of flowering plant in the family Caryophyllaceae known by the common name Kalalau schiedea. It is endemic to Hawaii, where it is known only from the Kalalau Valley on the island of Kauai. It is threatened by the degradation of its habitat. It was federally listed as an endangered species of the United States in 2010. This plant is a shrub growing up to about 75 centimeters tall. It is covered in tiny, curved, purplish hairs. The oppositely arranged leaves have thick, somewhat fleshy blades which are linear to lance-shaped and measure up to 7 centimeters

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