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[].

Common Name:

General Information

Rubus doyonensis is a shrub producing a cluster of scrambling, sparsely-prickly, biennial stems from a woody rootstock[]. The stems only produce leaves, and do not flower, in their first year of growth, forming flowering branches in their second year and then dying after fruiting
The plant is harvested from the wild for local use as a medicine, and probably also as a food.

Known Hazards

None known

Botanical References

Range

E. Asia - southern China (northern Yunnan)

Habitat

Mixed forests, valleys, ravines; at elevations from 2,000-3,200 metres[].

Properties

Edibility Rating
Medicinal Rating
Other Uses Rating
Habit	Shrub
Height	0.00 m
Cultivation Status	Wild

Cultivation Details

Rubus doyonensis is native to the warm temperate regions of southern China where if can be found in hardiness zones 8 - 9.
Species in this genus are generally easily grown in a good well-drained loamy soil in sun or semi-shade[, ].

Edible Uses

Fruit - raw or cooked. The black, subglobose fruit is around 15mm in diameter[].

Medicinal

The seeds are widely used medicinally in Yunnan[].

Other Uses

A purple to dull blue dye is obtained from the fruit[].

Propagation

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.
Cuttings of half-ripe wood, mid summer in a frame[].
Division in early spring or just before leaf-fall in the autumn[].