Tas. 8246. 
RUBUS Kornneanvs. 
Japan. 
RosaceakE. Tribe RusRaz. 
Rusus, Linn.; Benth. et Hook. f. Gen. Plant. vol. i. p. 616; Focke in Engl. & 
Prantl, Pflanzenfam. vol. iii. pars iii. p. 28. 
Rubus (Batothamnus) Koehneanus, Focke in Spith Cat. 1908-9, p. 128; a 
R. inciso, Thunb., foliis et floribus multo majoribus et sepalis duplo 
latioribus differt. 
Frutex suberectus, circa 1 m. altus; rami iterum ramosi, striatuli, purpurei, 
pruinosi, laeves vel parce aculeati. Folia petiolata, simplicia, 3-5-loba vel 
interdum subintegra, crenata vel denticulata, 3-12 cm. longa, 2-12 cm. lata, 
basi saspissime profunde cordata lobis acutis vel subacutis, supra viridia, 
subtus albido-tomentosa, venis distincte reticulatis; petioli 1-8 cm. longi, 
parce aculeati. lores ad apices ramorum laxe cormybosi, pauces ; 
bracteae lineari-lanceolatae, acuminatae, 4-6 mm. longae; pedunculi 
graciles, laeves, 1-2cm. longi. Calyx extra glaber, intus albido-tomentosus, 
segmentis late triangulari-ovatis acutis vel acuminatis 5-6 mm. longis, 
apice recurvis. Petala elliptico-oblonga vel obovata, obtusa, alba, circa 
8mm. longa. Stamina numerosa, incurva, in annulum disposita ; filamenta 
glabra, 4 mm. longa, basi sanguinea, apice alba. Carpella glabra; styli 
2mm. longi, glabri; stigma capitatum. Drupae paucae, aurantiacae.— 
R. A. Roure. 
The plant from which the figure now given has been 
prepared was purchased: from Mr. Spith of Berlin’in 1900 
under the garden name of R. moriifolius ; it differs, however, 
from Siebold’s species so named, and Dr. Focke has found 
it necessary to treat it as a distinct species referable to a 
small East Asian group, the Corchorifolii, of the section 
Batothamnus. To the same group belong &. corchorifolius, 
Linn. f.; R. crataegifolius, Bunge; and R. palmatus, 
Thunb., which has already been figured in this work (B. M. 
t. 7801). It is considered by Dr. Focke to be most nearly 
allied to R. incisus, Thunb., from which it differs in its more 
robust habit and in the larger size of all its parts. 
Cuitivation.—R. Koehneanus at Kew has proved per- 
fectly hardy and has formed a rounded bush 3 ft. high. 
It blossoms towards the end of May and its fruits are ripe 
in July. The plant thrives vigorously in a border of 
Mascu, 1909. 
