470 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Cytisus x Dallimorei {Boi. Mag. tab. 8482).— Family Legu- 



tninosae, tribe Genisteae. A cross between C. scoparius var. A ndreanus 

 and the White Portugal Broom, C. albus. Shrub, 6-8 feet high. 

 Leaves uni- or trifoliate. Flowers pale purple touched with rose ; 

 wing-petals rich crimson. Obs. — The yellow has almost entirely 

 disappeared. — G. H. 



Cytisus nigricans {Bot. Mag. tab. 8479).— Europe. Family 

 Leguminosae, tribe Genisteae. Shrub. Leaves 3-foliolate. Racemes 

 terminal, 6-7 inches long. Corolla yellow. — G. H. 



* Dendrobium Imthurnii (Bot. Mag. tab. 8452).— New Hebrides. 



Family Orchideae, tribe Epidendreae. Herb, epiphyte. Leaves 

 elliptic-oblong, 3-4 inches long. Flowers medium size, white ; 

 labellum three-lobed, 1 inch long. — G. H. 



Dendrobium Schuetzei (Bot. Mag. tab. 8495).— Philippines. 



Family Orchidaceae, tribe Epidendreae. Herb, epiphyte, 6-16 

 inches high. Leaves 3-4 inches long. Peduncles subterminal, 

 few-flowered. Flowers large, 3 inches across, white lip, with green at 

 the base. — G. H. 



Desmodium Species suitable for keeping down Weeds and 

 manuring the ground in Tropical Cultures. By H. Harms 



(Not. Konig. Bot. Berlin, vol. v. no. 50, pp. 308-318 ; Jan. 1913 ; 

 with 1 text figure). — In tropical agriculture low-growing bushes or 

 herbaceous plants have been planted with success between the growing 

 crops (especially when these consist of trees) in order to keep down the 

 weeds and to prevent the heavy rains washing the earth from the roots. 

 In the Asiatic caoutchouc culture, for example, Passiflora foetida, 

 Crotalaria striata, Mimosa pudica, Desmodium triflorum, &c, have been 

 used for this purpose with advantage. 



Leguminous plants are particularly to be recommended for 

 inter-planting since, owing to the possession of root-nodules, they will 

 enrich the soil with nitrates as well as restrict the growth of weeds. 



In East Africa several low-growing species of Desmodium have 

 been very successfully used between various trees which were being 

 cultivated. D. hirtum, D. barbatum, D. adscendens, D. lasiocarpum, 

 D. triflorum, D. scalpe, D. polycarpum, D. tortuosum, as well as some 

 other plants, are systematically described in this contribution. — R. B. 



Deutzia longiflora (Bot. Mag. tab. 8493). — Western China. 

 Family Saxifragaceae, tribe Hydrangeae. Shrub, 3-7 feet high. 

 Leaves lanceolate, 1J-3I inches long. Cymes forming a many- 

 flowered pyramidal corymb. 2 J inches across. Petals ovate, rose- 

 coloured in bud, J inch long. — G. H. 



Dianthus, dwarf species. By W. Irving (Gard. Chron. April 19, 

 1913, p. 254, 7 figs.). A good account from a garden standpoint of 



11 species. — E.A. B. 



