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[
Rubus adenothyrsus Cardot
Rubus ampelinus Focke
Rubus minimiflorus H.Lév.
Rubus moluccanus lambertianus (Ser.) Kuntze
Rubus morii Hayata
Rubus ochlanthus Hance
Rubus paykouangensis H.Lév.
Rubus pycnanthus Focke
Rubus viscidus Focke
Rubus lambertianus is an evergreen shrub, producing a cluster of scrambling, sparsely-prickly, biennial stems from a woody rootstock; the stems can be up to 300cm long[
The plant is harvested from the wild for local use as a food. It is sometimes grown as an ornamental in gardens.
E. Asia - central and southern China, southern Japan, Thailand
Slopes, roadsides, montane valleys, stony ravines, grasslands, thickets, sparse forests, forest margins, moist places; at elevations from 200 - 2,500 metres[
|Cultivation Status||Ornamental, Wild
Easily grown in a good well-drained loamy soil in sun or semi-shade[
Plants grow well in light woodland[
] and are generally evergreen when grown in sheltered places such as a woodland[
Plants in this genus are notably susceptible to honey fungus[
Fruit - raw or cooked[
]. The subglobose, red (occasionally yellow) fruit is 6 - 8mm in diameter[
A luxuriant, very leafy, scandent shrub, suitable for planting as a rough group in thin woodland[
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[
Tip layering in July. Plant out in autumn.
Division in early spring or just before leaf-fall in the autumn[