USGS Home
Contact USGS
Search USGS
Northern Prairie Wildlife Research Center
Home
About NPWRC
Our Science
Staff
Employment
Contacts
Common Questions
About the Site
Soft Rush
(Juncus effusus)
Family:
Rush (Juncaceae)
Flowering:
May-September.
Field Marks:
This is the only
Juncus
with the flowers appearing lateral on the stem and no leaves.
Habitat:
Wet ground, in ditches, swamps, marshes, around ponds and lakes.
Habit:
Tufted perennial herb with rhizomes.
Stems:
Erect, hollow, smooth, up to 4 1/2 feet tall.
Leaves:
None.
Flowers:
Several in a cluster, arising from the stem a few inches below the top, each flower green or brown, about 1/6 inch long.
Sepals:
3, free from each other, narrow, tapering to a point.
Petals:
3, free from each other, narrow, tapering to a point.
Stamens:
3.
Pistils:
Ovary superior.
Fruits:
Capsules obovoid, brown, smooth, about 1/6 inch long; seeds numerous, straw-colored, 1/40 inch long.
Notes:
Muskrats sometimes eat the stems of this rush; the seeds are eaten by waterfowl.
Previous Space
-- Short-fruited Rush
(Juncus brachycarpus)
Return to Species List
-- Group 4
Next Species
-- Inland Rush
(Juncus interior)