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Centromadia parryi
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Parry Spikeweed
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Centromadia parryi

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About Parry Spikeweed (Centromadia parryi) Pappose Tarweed (Centromadia parryi) is a rare native annual herb that grows in Northern, Southern and Central California, primarily in the North Coast, the North Coast Range and South Coast regions. It tends to grow in seasonally wet grassy places, at elevations from 0-1400 feet.
Plant Description
Plant Type
Annual herb

Max. Height
2.3 ft (0.7 m)

Native Status

Natural Setting
Site Type
Seasonally wet (often saline or alkaline) grassy places


Elevation ?
-3' - 4188'

Annual Precip. ?
9.9" - 68.8"

Summer Precip. ?
0.17" - 1.41"

Coldest Month ?
33.6° F - 56.5° F

Hottest Month ?
59.8° F - 79.4° F

Humidity ?
0.51 vpd - 25.26 vpd

Landscaping Information
Common uses
Bee Gardens

Other Names
Botanical Names
Hemizonia parryi

Common Names
Congdon's Tarweed

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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