Piperia colemanii R.Morgan & Glicenstein, syn. Platanthera colemanii (Rand.Morgan & Glic.) R.M.Bateman, is known as Coleman's rein orchid. It is endemic to California, where it is known from the Sierra Nevada and one disjunct location in Colusa County, California. It grows in coniferous forests and chaparral in deep sandy soils. It grows to roughly half a meter with about a hundred small greenish unscented flowers with curved sickle-shaped petals. This species can be differentiated from Piperia unalascensis by having a shorter spur relative to the lip. The leaves are thin and grasslike. Photos from Aaron Arthur.
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