Juncus triformis

Juncus triformis
Conservation status
Imperiled (NatureServe)1
Scientific classification
Kingdom:	Plantae
Clade:	Embryophytes
Clade:	Tracheophytes
Clade:	Spermatophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Poales
Family:	Juncaceae
Genus:	Juncus
Species:	J. triformis
Binomial name
Juncus triformis Engelm.

Juncus triformis is an uncommon species of rush known by the common names Yosemite dwarf rush and long-styled dwarf rush.

It is endemic to California, where it grows in wet granite rock habitat covered in thin soil layers, such as vernal pools and seeps.² It is known from the Sierra Nevada, Central Valley, southern Cascade Range, and locations in the eastern Transverse Ranges and the Peninsular Ranges in Southern California.³

Description

Juncus triformis is a small annual herb forming dense clumps of hair-thin red stems up to about 16 centimeters high.

The inflorescence is made up of one to eight tiny flowers atop each stem. The flowers have a few greenish to bright red segments no more than 4 or 5 millimeters long.