Thimbleberry
| Rubus parviflorus | |
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| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Rosales |
| Family: | Rosaceae |
| Genus: | Rubus |
| Subgenus: | Anoplobatus |
| Species: | R. parviflorus |
| Binomial name | |
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Rubus parviflorus Nutt. 1818 |
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| Synonyms | |
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Synonymy
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Rubus parviflorus, commonly called thimbleberry, is a species of Rubus native to North America.
Rubus parviflorus is native to western North America from Alaska south as far as California, New Mexico, Chihuahua, and San Luis Potosí. Its range extends east to the Rocky Mountains and discontinuously to the Great Lakes Region. It grows from sea level in the north, up to elevations of 3,000 m (10,000 ft) in the south.
Rubus parviflorus typically grows along roadsides, railroad tracks, and in forest clearings, commonly appearing as an early part of the ecological succession in clear cut and forest fire areas.
Thimbleberry is found in forest understories with typical flora associates including coastal woodfern, Dryopteris arguta, Trillium ovatum and Smilacina racemosa.
Rubus parviflorus is a dense shrub up to 2.5 meters (8.2 ft) tall with canes no more than 1.5 centimeters (0.59 in) in diameter, often growing in large clumps which spread through the plant's underground rhizome. Unlike many other members of the genus, it has no prickles. The leaves are palmate, up to 20 centimeters (7.9 in) across (much larger than most other Rubus species), with five lobes; they are soft and fuzzy in texture.
The flowers are 2 to 6 centimeters (0.79 to 2.36 in) in diameter, with five white petals and numerous pale yellow stamens. The flower of this species is among the largest of any Rubus species, making its Latin species name parviflorus ("small-flowered") a misnomer.
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