Juncus howellii F. J. Hermann

Herbs, perennial, 2--6 dm. Rhizomes long creeping. Culms erect, slightly compressed, never rooting at nodes. Leaves: basal 2--4, cauline 2--3; auricles 1--3 mm, apex rounded to acutish, membranous; blade flat, 10--30 cdm x 2--4 mm, reduced distally, margins occasionally papillose. Inflorescences glomerules, usually 3--9, each with 3--8(--10) flowers, open, 2--9 cm; primary bract much shorter than inflorescence. Flowers: tepals yellow-brown with green midstripe, lanceolate, 5--6.5 mm, margins clear; outer and inner series nearly equal, adaxially papillose; stamens 6, filaments 0.5--1 mm, anthers 1.8--2.6 mm; style 0.6 mm. Capsules tan, 3-locular, obovoid, 3--5 mm, shorter than perianth. Seeds ovoid, body 0.5--0.7 mm, tails 0.2--0.4 mm.

Calif., Idaho, Oreg., Wash.

Flowering and fruiting summer.

Moist ground in mountain meadows; 850--2500m.

Juncus howellii is a species of rush known by the common name Howell's rush. It is native to the northwestern United States, where it grows in moist mountain meadows. This is a perennial herb growing from a thick rhizome and producing stems up to about 60 centimeters tall. The inflorescence is a series of clusters of small flowers, each flower with brown or green pointed segments a few millimeters long.

Juncus howellii là một loài thực vật có hoa trong họ Juncaceae. Loài này được F.J.Herm. mô tả khoa học đầu tiên năm 1949.