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Chorizanthe membranacea

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About Pink Spineflower (Chorizanthe membranacea) Chorizanthe membranacea is a species of flowering plant in the buckwheat family known by the common name pink spineflower. It is native to Oregon and California, where it is widespread and in some areas quite common. It can be found in a wide variety of habitats. This herb grows erect to a maximum height near one meter. It is woolly in texture and most of its parts may bear a pink tint. The leaves are mostly linear in shape and they may occur along the stem as well as at the base. The longest may reach 5 centimeters. The flower cluster is a dense cluster of flowers, each surrounded by a unit of six fused leafs which are generally white to pinkish in color. The leafs are tipped with hooked awns. The flower itself is just a few millimeters long, white to pink, and quite hairy. There are sometimes small flower clusters located in the cauline leaf axils along the stem. This species is easily distinguished from other spineflowers by its relative abundance of leaves, its height and upright habit, and the fusion of the leafs of the involucre into a continuous body.
Plant Description
Plant Type
Annual herb

Max. Height
0.33 - 3.3 ft (0.1 - 1 m)

Flower Color

Native Status

Natural Setting
Site Type
Grassy and disturbed places

Sun, Part Shade

Elevation ?
36' - 14090'

Annual Precip. ?
8.4" - 86.0"

Summer Precip. ?
0.15" - 3.85"

Coldest Month ?
10.8° F - 52.5° F

Hottest Month ?
34.1° F - 78.2° F

Humidity ?
0.80 vpd - 26.30 vpd

Sunset Zones ?
7*, 8, 9*, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

Landscaping Information
Ease of Care
Moderately Easy

Water Requirement ?
Extremely Low
Very Low
Moderate - High

Nursery Availability
Rarely Available

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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