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Deinandra lobbii
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Threeray Tarweed
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Deinandra lobbii

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About Threeray Tarweed (Deinandra lobbii) Deinandra lobbii, called threeray tarweed, is a North American species of plants in the tarweed tribe within the (sunflower family). It is endemic to California, though with a disjunct (discontinuous) distribution. It has been found in the northeastern part of the state (Modoc, Lassen, and Shasta Cos. ) the San Francisco Bay region (Solano, Contra Costa, and Alameda Cos. ) and west-central region (Monterey, San Benito, and northern San Luis Obispo Cos). Calflora also reports a collection from Santa Clara County but this is from the central part of the campus of Stanford University, hence most likely a cultivated specimen. Deinandra lobbii is an annual herb up to 70 cm (28 inches) tall. It has numerous flower heads in a showy array. Each head has 3 (occasionally 4) yellow ray florets plus 3 (occasionally 4) disc florets with yellow corollas and red or dark purple anthers.
Plant Description
Plant Type
Annual herb

Max. Height
2.3 ft (0.7 m)

Flower Color

Native Status

Natural Setting
Elevation ?
-7' - 5981'

Annual Precip. ?
11.2" - 28.0"

Summer Precip. ?
0.16" - 1.68"

Coldest Month ?
32.3° F - 49.2° F

Hottest Month ?
57.6° F - 79.0° F

Humidity ?
0.82 vpd - 26.75 vpd

Landscaping Information
Nursery Availability
Never or Almost Never 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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