186 TRANSACTIONS OF THE [Sess. lxxxi 



lunate or ovate truncate outside very glabrous margin 

 ciliate with white or red hairs sometimes simple sometimes 

 floccose. Corolla white suffused outside with rose, short 

 openly campanulate about 3-5 cm. long exceeding the 

 stamens and gjaiaeceum, 5-gibbous at the base and retuse, 

 outside eglandular and without hairs, inside glabrous and 

 marked on the back by a large basal crimson blotch with 

 a few spots above it, 5-lobed ; lobes about 1-4 cm. long 

 and 2 cm. broad rounded emarginate and subcrenulate. 

 Stamens 10 unequal, the longer about 2*8 cm. long the 

 shorter about 1"4 cm. long; anthers red about 3*5 ram. 

 lono-; filaments slightly wider towards the base and from 

 the very base to the apex of the ovary densely pubescent. 

 Disk glabrous. Gynaeceura about 2-8 cm. long nearly 

 equalling the longer stamens; ovary intensely brown or 

 blackening papillate conoid grooved about 55 mm. long, clad 

 with very short somewhat adpressed white hairs ; style red 

 glabrous slightly expanding into the purple lobulate stigma. 



W.Yunnan. Shweli-Salween divide. Alt. 9000-10,000 ft. 

 In mixed forests and thickets. Shrub of 9-16 ft. Flowers 

 white flushed exterior rose-lavender. G. Forrest. No. 

 11,918. June 1913. 



This is, I think, one of the most charming species of the 

 Irroratum series. Its flowers are described as white flushed 

 rose-lavender on the outside. It is one of the three white- 

 flowered species of the Irroratum series, the others being 

 RJi. adenosteonontivi and Rh. irroratum — which are, how- 

 ever, very different plants, particularly in the development 

 of glands. Our species has delicate graceful branches with 

 narrow willow-like leaves, and the flower-trusses if not 

 large are composed of flowers with delicate pedicels and 

 beautifully shaped open campanulate corolla. It may 

 perhaps be regarded as not far removed from Kh. gym- 

 nanthum in the series, but has smaller leaves which are 

 not polished on upper surface, smaller flowers, a campanu- 

 late not funnel-shaped corolla, glabrous pedicels, pubescent 

 not sparingly puberulous filaments to the stamens and a 

 puberulous ovary. Its nearest ally is without doubt an 

 equally pretty species, Rh. tanastylum, Balf, f. et Ward, 

 from over the frontier in E. Upper Burma. This may be 

 spoken of as a crimson-flowered RJi. araiopJiyllum, for in 



