99 
consider it P. domestica x insititia, even although described as a 
variety of P. instititia. Can a pure sloe or bullace have oval 
fruits 1 — J.F. 
Spircea [ canescens Don]. Naturalised in wood below Cawsand 
Beacon, Dartmoor, Devon, Aug. 1919. — H. E. Fox. This is rather 
a difficult garden shrub. I have had a very fine specimen here 
for many years. In 1904 I tried to identify it correctly, and on 
comparison with Himalayan specimens in Herb. Kew, of S. canes- 
cens Don, found that it did not agree. C. B. Clarke said that 
he thought it must be a form of S. arcuata Hook.-fil., which, 
however, is described as having hairy red flowers. This plant is 
always white-flowered. It does not set seed with me ; the ripe 
carpels would at once settle whether it should be referred to 
S. canescens or to S. arcuata. Is it not probably a nurseryman’s 
hybrid, subsequently propagated by runners, which it forms very 
abundantly ? There is a specimen of this precise plant in Herb. 
Kew from Standish, grown at Ascot in 1872, and sent through 
Sir W. Thiselton Dyer under the name of S. Stanclishii / I am 
now growing true S. arcuata from Sikkim seed, but it has not 
flowered yet, though the plants are five years old. If it flowers 
this year I will compare. So far it seems a weaker plant than 
this. — C.C.L. [Later] “I have now had opportunity of looking 
at a fair number of specimens here, and am sure that it is a 
garden hybrid. All the plants that I have seen this year are 
sterile, whilst the S. arcuata from Sikkim seed is setting seed 
freely. It may very possibly be a hybrid between ojcuata and 
some stronger growing kind.” 
Rubus . Near Ty Croes Station, Anglesey, v.c. 52, 
June 6, 1919. Flowers pale bluish rose colour. — J. E. Griffith. 
Poor material ; but I have little doubt it is a somewhat abnormal 
form of R. latifolius Bab. In appearance it is much unlike the 
luxuriant specimens of 1916 (Griffith) ; and the sepals are much 
more olive-hued and more ‘ suberect ’ or subrhamnifolius in cha- 
racter than usual in this species. — H.J.R. 
R. villicaulis Koehl., var. calvcdus Blox. (Ref. No. 435). South 
Tawton quarries, N. Devon, v.c. 4, Sept. 2, 1919. Named by 
Mr. A. B. Jackson. — W. C. Barton. I do not know calvatus , and 
your specimens are very late-gathered. But they seem fairly 
well to agree with description and specimens, especially in the 
stem and leaflets. The chief weakness lies in the panicle foliage, 
a matter, however, of very varying value. I should say calvatus 
and a new county record. — H.J.R. 
