Wildflowers of the United States

Thimbleberry, Western Thimbleberry, Salmonberry, Mountain Sorrel, White Flowering Raspberry, Western Thimble Raspberry - Rubus parviflorus

Genus Common Name: Blackberry

Native Status: Native

Dicot Perennial Subshrub

Rubus parviflorus - Thimbleberry, Western Thimbleberry, Salmonberry, Mountain Sorrel, White Flowering Raspberry, Western Thimble Raspberry. Western Thimbleberry is a native of the western part of the United States, and the north central region as far east as Michigan. There is a disjunct population in Massachusetts; I would suspect that this is a naturalized population rather than indigent.

When I photographed this I had hoped it was Bartonberry - Rubus bartonianus - a Rubus species found only in Hell's Canyon. While similar, the easy access location of this plant (Kleinschmidt Grade) didn't match to any of the known locations of Rubus bartonianus, and the leaves are somewhat different, so that left me with Thimbleberry rather than Bartonberry.

Thimbleberry is also a common name for an eastern Rubus species, Rubus odoratus.

Found in:
AK, AZ, CA, CO, IA, ID, IL, MA, MI, MN, MT, NM, NV, OR, SD, UT, WA, WI, WY

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Distribution of Rubus parviflorus in the United States and Canada:

Map courtesy of The Biota of North America Program.
Map color key
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Site: Kleinschmidt Grade, Adams County, ID Date: 2011-June-19	Photographer: Gerald C. Williamson Nikon D7000 Tamron SP 90MM f/2.8 AF Macro
Western Thimbleberry blossoms have 5 white petals (they are in Rosaceae after all) surrounding a large number of yellow stamens, which will darken as they mature.

Site: Kleinschmidt Grade, Adams County, ID Date: 2011-June-19	Photographer: Gerald C Williamson Nikon D7000 Tamron SP 90MM f/2.8 AF Macro
The fruit is red when ripe. While it is edible and can provide nourishment, reports are that it tends to be somewhat dry and not especially tasty. It reportedly can be used to make a good jelly.
Click on the photo for a larger image
Site: Kleinschmidt Grade, Adams County, ID Date: 2011-June-19	Photographer: Gerald C Williamson Nikon D7000 Tamron SP 90MM f/2.8 AF Macro
One of the unusual characteristics of Rubus parviflorus compared to other Rubus species is the lack of thorns. The relative size of the blossom to the large leaves is probably the reason for the species epithet - parviflorus - which means "small flowered." The blossoms are actually as large as most Rubus species.
Click on the photo for a larger image

References used for identification and information:

http://plants.usda.gov/java/profile?symbol=RUPA
http://www.rook.org/earl/bwca/nature/shrubs/rubuspar.html

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Rubus parviflorus initially published on USWildflowers.com 2011-06-25; Updated 2015-06-24

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All content except USDA Plants Database map Copyright Gerald C. Williamson 2024
Photographs Copyright owned by the named photographer

Code Update 20230302