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Umbrella Bulrush
Scirpus diffusus
About Umbrella Bulrush (Scirpus diffusus) 0 Nurseries Carry This Plant Scirpus diffusus is a species of flowering plant in the sedge family known by the common name umbrella bulrush. It is endemic to California, where it can be found in several of the high mountain ranges from the Klamath Mountains to the Sierra Nevada. It grows in wetland habitat and other moist areas, such as mountain meadows. It is similar to Scirpus congdonii and was described from herbarium specimens once mislabeled as such. It is a perennial herb forming a clump of erect stems growing up to a meter tall, solitary stems sometimes occurring as well. The stems are three-angled and narrow at the middle. Sheathing leaves occur at the stem bases as well as higher up the stems. The inflorescence occurs at the end of the stem, with small additional ones growing from the uppermost leaf axil. The inflorescence consists of several clusters of many spikelets wrapped at the bases in a leaflike bract.
Plant Description
Plant Type
Plant Type

3.3 ft tall

Flower Color
Flower Color

Wildlife Supported

Butterflies & moths hosted ( 2 likely * ) SHOW ALL

Landscaping Information
Common uses
Common uses
Bogs and Ponds

Natural Setting
Annual Precipitation: 33.3" - 106.6", Summer Precipitation: 0.81" - 3.95", Coldest Month: 24.2" - 49.4", Hottest Month: 46.7" - 74.8", Humidity: 1.78" - 23.85", Elevation: 684" - 10093"

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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