Rubus parviflorus, commonly called thimbleberry, is a species of Rubus native to North America. 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. Rubus parviflorus is a dense shrub up to 2.5 meters (8.2ft) tall with canes no more than 1.5 centimeters (0.59in) 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 (7.9in) 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 2.36in) 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. The plant produces edible composite fruit approximately a centimeter (0.4 inches) in diameter, which ripen to a bright red in mid to late summer. Like other raspberries it is not a true berry, but instead an aggregate fruit of numerous drupelets around a central core. The drupelets may be carefully removed separately from the core when picked, leaving a hollow fruit which bears a resemblance to a thimble, perhaps giving the plant its name. (Wikipedia). Photo credit: Walter Siegmund CC BY-SA 3.0.