Piperia colemanii
 Piperia colemanii is a rare species of orchid known by the common names Coleman's piperia and Coleman's rein orchid. It is endemic to California where it is known from scattered occurrences along the Sierra Nevada and one disjunct location in Colusa County California. It grows in coniferous forests and chaparral in deep sandy substrates. It was differentiated from the very similar Piperia unalascensis in 1993.It grows erect to about half a meter in maximum height.