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Calamagrostis ophitidis
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Serpentine Reed Grass
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Calamagrostis ophitidis

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About Serpentine Reed Grass (Calamagrostis ophitidis) Calamagrostis ophitidis is a species of grass known by the common name serpentine reedgrass. It is endemic to California, where it grows in the serpentine soils of the mountain slopes north of the San Francisco Bay Area. It is a perennial grass forming clumps reaching heights between 60 centimeters and one meter. The flower cluster is a dense, thinly bushy array of rough, pale-colored spikelets.
Plant Description
Plant Type

Max. Height
2 - 3.3 ft (0.6 - 1 m)

Flower Color

Native Status
Natural Setting
Sun, Part Shade, Full Shade

Elevation ?
88' - 4925'

Annual Precip. ?
27.3" - 134.6"

Summer Precip. ?
0.27" - 3.91"

Coldest Month ?
39.6° F - 49.8° F

Hottest Month ?
61.9° F - 74.0° F

Humidity ?
0.75 vpd - 21.34 vpd

Sunset Zones ?
4, 5, 7, 8, 9, 14*, 15*, 16*, 17*, 19*, 20*, 21*, 22*, 23*, 24*

Landscaping Information
Common uses
Deer Resistant

Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Serpentine Reedgrass

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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