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Asclepias cryptoceras
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Pallid Milkweed
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Asclepias cryptoceras

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About Pallid Milkweed (Asclepias cryptoceras) Asclepias cryptoceras is a species of milkweed known by the common names pallid milkweed and Humboldt Mountains milkweed. It is native to the western United States, where it grows in many types of habitat, especially dry areas. This is a perennial herb growing low against the ground or drooping. It arises from a fleshy, woody rhizome-like root. The thick leaves are round to heart-shaped and arranged oppositely on the short stem. The flower cluster is a cluster of small flowers with centers of bright to dull pink hoods surrounded by pale-colored reflexed corollas. The fruit is a follicle held erect on a small stalk.
Plant Description
Plant Type
Perennial herb

Flower Color
Cream, Red, Pink

Native Status

Natural Setting
Site Type
Sandy or gravelly slopes, canyon botms, dry plains

Sun, Part Shade

Elevation ?
6471' - 8227'

Annual Precip. ?
8.6" - 24.8"

Summer Precip. ?
1.34" - 1.86"

Coldest Month ?
27.3° F - 30.3° F

Hottest Month ?
53.9° F - 61.5° F

Humidity ?
2.52 vpd - 18.04 vpd


Landscaping Information
Common uses
Butterfly Gardens

Other Names
Botanical Names
Asclepias cryptoceras ssp. davisii

Common Names
Humboldt Mountains Milkweed

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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