The genus Rubus, (especially the blackberries, which are often loosely referred to as Rubus fruticosus agg.) presents some of the most difficult taxonomic problems. This is partly due to the frequency of polyploidy; also to the frequent occurrence of hybridization; and also due to apomixis, where minor differences between plants are preserved because seedlings are genetically identical to their parent. As a result, differences of opinion on the number of species to be recognized from a given region can vary tremendously (for example, a treatment by M. L. Fernald[
] in 1950 recognized 205 species for the northern half of the eastern United States plus parts of southeastern Canada, whilst H. A. Gleason and A. Cronquist in 1991 recognized only 25)[
]. Where possible, a relatively conservative approach is taken here[
Comarobatia lasiococca (A.Gray) Greene
Common Name: Roughfruit Berry
Rubus lasiococcus is a perennial plant with unarmed, creeping main stems and erect, flowering branches growing from a woody rootsock; it can grow 10 - 15cm tall[
The plant is harvested from the wild for local use as a food.
Western N. America - British Colombia, Washington, Oregon, California
Moist to dry, semi-open forests, wet meadows, roadsides, dry sand; at elevations from 800 - 2,000 metres[
Species in this genus are generally easily grown in a good well-drained loamy soil in sun or semi-shade[
Rubus lasiococcus is recognized by its creeping, unarmed stems, simple 3-lobed to 3-foliate leaves, small flowers, white petals, and densely hairy ovaries[
Fruit - raw or cooked. The red, hemispherical fruit is around 10mm in diameter[
Seed - requires stratification and is best sown in early autumn in a cold frame. Stored seed requires one month stratification at about 3°c and is best sown as early as possible in the year. Prick out the seedlings when they are large enough to handle and grow on in a cold frame. Plant them out into their permanent positions in late spring of the following year.
Division in early spring or just before leaf-fall in the autumn[