Al Schneider's Rocky Mountains Plant Descriptions

Boulder Raspberry
Rubus deliciosus
Rose family (Rosaceae)

Boulder Raspberry is a large shrub with very showy large white flowers and bright green deeply veined foliage which turns yellows in the fall. The shrub produces a nice crop of which, even though edible, are not considered delectable by most. Folks plant Boulder Raspberry as an ornamental rather than a source for ice cream topping. The plant was first collected for science at the mouth of Boulder Canyon, Colorado, by Edwin James.


©2006 Ulf Eliasson

Description

Shrubs to 4 1/2' tall, branches woody, older bark flaky, unarmed, young twigs hairy. Leaves from 1 to over 2" wide, 3 to 5 , the , soon above, to somewhat hairy below. a solitary flower at the end of a short leafy . to over 1/2" long. Petals to over 1" long, white, showy. to about 1/3" broad, dark purple.

Field Marks

Large, showy shrub with large white flowers, shredded red bark, and not so tasty .

© Al Schneider

lobe -- Being divided by clefts.

lobe -- A rounded parts of a leaf (or other organ).

branchlet -- a small branch.

fruit -- any seed-bearing structure in flowering plants. It is formed from the ovary after flowering.

Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom.

The botanical term "berry" is different from common usage. Strawberries and raspberries are not berries. But a tomatoe is. A true berry is a fruit with the seeds immersed in the pulp.

glabrous -- smooth, glossy, having no bristles or hair-like structures. Bald.

dentate -- with sharp, outward-pointing teeth

An inflorescence is a group or cluster of flowers arranged on a stem.