What is the sole species in the genus Darlingtonia?

What is the sole species in the genus Darlingtonia? The sole species is Darlingtonia californica.

Darlingtonia californica is a carnivorous pitcher plant in the family Sarraceniaceae. It is the only living species in the genus Darlingtonia, making the genus monotypic. Its best-known common name is cobra lily, although it is also called the California pitcher plant.

The plant’s tubular leaves resemble a raised cobra hood. A translucent, forked structure above the pitcher can confuse insects as they search for an exit, while slippery surfaces and downward-pointing hairs direct them toward digestive fluid. Unlike tropical Nepenthes, Darlingtonia is a New World pitcher plant.

Darlingtonia californica is native to northern California and Oregon, particularly cool, wet habitats and mountain seeps. John Torrey described it in 1853 and named the genus after William Darlington, a Philadelphia botanist. The species name can mislead readers because the plant also grows in Oregon; “californica” reflects its original scientific naming, not its complete modern range.