NOTES AND ABSTRACTS. 
427 
Rhododendron ledoides Balf. f. et W. W. Sm. By J. Hutchinson {Bot. 
Mag. t. 8831). — This rhododendron belongs to the series Cephalanthum, and 
seed was collected by Mr. Forrest in 1913 at an elevation of 13,000 feet on the 
Tibet- Yunnan border. It flowered with Mr. J. C. Williams in 191 7 at Caerhays. 
The plant reaches 2 feet in height, has the habit of a Ledum, and bears heads 
of small expanded pink flowers with a short tube. — F. J. C. 
Rhododendron lutescens Franch. By J. Hutchinson {Bot. Mag. t. 8851 ; 
June 1920). — Leaves scaly, long acuminate, margins reddish, flowers sulphur- 
yellow ; a shrub up to 6 feet in height, introduced by Messrs. Veitch through 
Mr. Wilson. Hardy, except for late frosts. — F. J. C. 
Rhododendron oleifolium Franch. By J. Hutchinson {Bot. Mag. t. 8802, 
June 1 91 9). — A native of Tali, Yunnan, where seed was collected by Mr. Forrest. 
Seedlings flowered when but two years old, the pink flowers being like those 
of R. racemosum, solitary in the axils of the leaves. It is distinguished from 
R. racemosum by the longer, narrower leaves, by the soft hairy covering outside 
the corolla tube, and by the scaly style. The last two characters are not shown 
in the figure. — F. /. C. ^ 
Rhododendron praevernum. By J. Hutchinson {Card. Chron. March 13, 1920, 
p. 127). — Description with Latin diagnosis of this new species, differing from 
R. sutchenense in having a glabrous midrib and large purple blotch in the corolla. 
E. A. B. 
Rhododendron serotinum Hutchinson {Bot. Mag. t. 8841; June 1920). — 
Introduced through France from China, where the Abbe Delavay collected the 
seeds. It is related to R. decorum, but the growth is straggly, the leaves un- 
equally cordate at the base, the corolla glandular outside and blotched within. 
It is hardy, and forms a gaunt sparsely branched bush up to 10 feet in height. 
F.J. C. 
Rhododendron vernicosum Franch. By J. Hutchinson {Bot. Mag. t. 8834 ; 
March 1920). — Mr. Wilson collected seed of this species for Messrs. Veitch. 
It is related to R. Fortunei, but has smaller leaves unequally rounded at the 
base and a widely campanulate corolla tube. The flowers are pink and about 
to 2 inches in diameter. It makes a shrub up to 15 feet in height. — F. J. C. 
Ribes Jessoniae Stapf {Bot. Mag. t. 8840, March 1920). — Discovered by Wilson 
in W. Szechwan. A bush up to 9 feet high, with leaves somewhat like those 
of the red currant and long erect many-flowered racemes of tawny red flowers, 
followed in the female plant (the species is dioecious) by pale rusty yellow fruits. 
It is perfectly hardy. — F. J. C. 
Ribes niveum Lindl. By O. Stapf {Bot. Mag. t. 8849; June 1920). — A 
white-flowered gooseberry introduced by the R.H.S. through Douglas about 
1826, perfectly hardy, and, though ornamental, not widely distributed. Fruit 
dark purple, small. Bush somewhat prickly, and reaching to about 10 feet. 
F. J. C. 
Rosa glutinosa var. dalmatica Borbas. By R. A. Rolfe {Bot. Mag. t. 8826 ; 
Dec. 1919). — Known in gardens as R. glutinosa, but distinct by its longer straight 
prickles, minutely hairy leaflets, and larger ovoid, not globose, fruits. It is a 
dwarf species hardly more than ft. in height, with flowers of the sweet-briar 
type and hairy scarlet fruits. — jF. /. C. 
Roses for Hybridation. By Cochet-Cochet and S. Mottet {Le Jard. vol. 
xxxiv. pp. 100, loi ; 2 figs.). — Rosa sericea and R. Moyesii are recommended 
as forming excellent subjects for hybridation. — 5. E. W . 
Rust and Common Barberry. By L. H. Pammel {Iowa State Hort. Soc. 
Trans. 191 8, pp. 401-408). — Owing to the serious loss in cereal crops due to rust, 
the growing of barberry is prohibited in North Dakota. Berber is vulgaris, 
B. amurensis, and B. sinensis act as hosts to rust spores, but B. Thiinhergii is 
immune. — 5. E. W. 
Sabia latilolia Rchd. and Wils. By O. Stapf {Bot. Mag. t. 8859, Sept. 1920). 
— Hardy at Warley against a north wall, and bearing small red flowers in axillary 
clusters of two to four. — F. J. C. 
