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Thurber's Sandpaper Plant
Petalonyx thurberi
  
About Thurber's Sandpaper Plant (Petalonyx thurberi) 1 Nurseries Carry This Plant Petalonyx thurberi is a species of flowering plant in the family Loasaceae known by the common name Thurber's sandpaper plant. It is native to the deserts of the southwestern United States and northwestern Mexico, where it grows in sandy and scrubby habitat. It is a rounded or spreading, clumpy subshrub made up of many rough-haired stems approaching one meter in maximum height. The stems are lined with clasping leaves varying in shape from lance-shaped to triangular to oval and sometimes toothed. The flower cluster at the end of the stem is a small, crowded raceme of several flowers. The white flower appears tubular, its petals fused near the spreading tips but open lower, the stamens emerging from between them in such a way that they appear to originate outside the corolla. There are two subspecies, with the rarer, ssp. gilmanii (Death Valley sandpaper plant), limited to the deserts in and around Death Valley.
Plant Description
Plant Type
Plant Type
Perennial herb

Size
Size
3.3 ft tall

Flower Color
Flower Color
White

Landscaping Information
Sun
Sun
Full Sun

Nurseries
Nurseries

Soil Drainage
Soil Drainage
Fast

Natural Setting
Site Type
Site Type
Sandy or gravelly dunes, washes, canyons in

Climate
Climate
Annual Precipitation: 2.3" - 40.0", Summer Precipitation: 0.16" - 1.91", Coldest Month: 34.8" - 61.4", Hottest Month: 59.9" - 90.5", Humidity: 1.47" - 48.65", Elevation: -224" - 8006"

Alternative Names
Common Names: Thurber's Sandpaperplant


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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