APRIL 1 TO JUNE 30, 1921. 



17 



52928 to 52951— Continued. 



52939 to 52951. Rubus spp. Rosaceae. Bramble. 



52939. Rubus adenophorus Rolfe. 



A very distinct species witli thick, armed stems, hairy flowering 

 branches, and stipitate purple glands of unequal length. The hairy 

 leaves are ternated (or the upper ones rarely simple) and green on 

 both surfaces. The rachis. peduncles, and sepals are hairy, glandu- 

 lar, and a beautiful purple. The sepals recall a pincushion stuck 

 full of black-headed pins. This glandular development extends to 

 the stems and petioles. The rose-colored flowers with petals 5 milli- 

 meters long, are in 6 to 10 flowered racemes 3 to 4 centimeters long. 

 The black edible fruit is 1 centimeter wide. (Adapted from Keio 

 Bulletin of Miscellaneous Information, 1910, p. 382.) 



For previous introduction, see S. P. I. No. 29975. 



52940. Rubus alleghaxiensis Porter. 



One of the numerous forms of the cultivated blackberry, often 

 known as Bubns nigrolyaceus but apparently only a more or less 

 stable form of R. allegJianiensis. 



52941. Rubus biflorus quinqueflorus Focke. 



A large, vigorous-growing bush with attractive, stout, " white- 

 washed " stems 12 to 15 feet in height and ornamental foliage. 

 This plant produces rich,^ golden yellow, raspberrylike fruits of 

 pleasant flavor which may prove of considerable value in the hands 

 of the hybridist. (Adapted from The Garden, vol. 16, p. 62Jf.) 



For previous introduction, see S. P. I. No. 50294. 



52942. Rubus cheoosepalus Focke. 



The most valuable feature of this species is the very ornamental 

 evergreen foliage, Mdiich may be compared with that of a lime 

 tree. The slender stems, furnished with a few spines, grow 6 to 

 7 feet in a season. The simple cordate leaves, 4 inches long and 

 3i inches wide, are glabrous above and white beneath. The flowers 

 are borne in large panicles and have no decorative value; the fruits 

 are small and blue. Native to Hupeh and Ichang at altitudes of 

 4.000 feet. The best use for the plant is to cover a pillar, pergola, 

 or fence. (Adapted from Gardeners' Chronicle, 3d ser.. vol. 51, 

 p. 166.) 



52943. Rubus flosculosus Focke. 



A deciduous shrub up to 12 feet high, with stout erect stems 

 arching at the much-branched top. The pinnate leaves 4 to 7 inches 

 long are smooth above and covered beneath with a close white felt. 

 The small pink flowers in narrow racemes 2 to 4 inches long are 

 followed hy small, very dark red or black fruits which ore good 

 eating. Native to central and western China. (Adapted from Wil- 

 son, A Naturalist in Western China, vol. 2, p. 31.) 



For previous introduction, see S. P. I. No. 50296. 



52944. Rubus giealdtanus Focke. 



A deciduous Chinese bramble with ornamental foliage and attrac- 

 tive slender white stems. To get the best effect, at least 8 or 10 

 plants should be grouped together and the old growths cut out in 

 autumn to expose the full beauty of the previous summer's shoots. 

 (Adapted from The Garden, vol. 76, p. 624.) 



For i^revious introduction, see S. P. I. No. 50297. 



52945. Rubus ixopertus Focke. 



A climbing .shrub with strong stems and ovate leaflets green on 

 each surfaf-e. The short-pediceled flowers are axillary and clustered 

 at the tips of the bi-anches. Native to southern and central China 

 at altitudes of 2,0(X) meters. (Adapted from Bibliotheca Botanica 

 (/S'pa-.C's Jiiihoruni), vol. 72, p. 182.) 



