This plant must not be very common, because I have seen it in only
one place. Some of the books don't even mention it.
The plant is not very tall and the leaves are grass-like, so when
it is not in bloom it is very hard to spot.
However the flowers are very showy -- they are a bright purplish
pink, with a yellow center. They are about an inch across.
They have three petals and three sepals (all alike -- called
"tepals"). Usually three or four blossoms occur on a single stalk.
They bloom in the spring.
The reference books say that the plant likes a moist habitat.
However these specimens were found on top of a dry gravel bar,
growing among the sagebrush.