200 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



campanulate, with blunt teeth that are generally serrulate on the 

 margin. Bracts, one to each flower, very small and inconspicuous, 

 but when the flowers are numerous they form a distinct involucre. 



* North-West Himalayan Forms. 



12 (14).* P. Reidii, Duthie ; Chamba, 12,000 feet. (Probably only a robust 

 N.W.H. form of P. uniftora.) 



** Central and Eastern Himalayan Forms. 

 13. P. Wattii, King ; Sikkim. 



14 (12). P. uniflora, Klatt ; Sikkim, 13-15,000 feet. 



15. P. soldanelloides, Watt ; Sikkim, 13-15,000 feet. 



(b) Flowers pedunculate (umbellate). 



Section 3 : Rosea. — Leaves linear-ovate, acute, tapering some- 

 what suddenly (especially the later foliage) into winged petioles, often 

 sharply toothed, smooth shining green, glabrous, scarcely mealy. 

 Inflorescence umbellate, few-flowered, never verticillate ; scapes 

 much longer than the leaves, especially when in fruit. Corolla, tube 

 long, straight, relatively wide, and expanding very gradually towards 

 the naked throat ; lobes distinctly emarginate or even bifid. Bracts 

 few, parallel to each other, erect, forming a 1 -seriate whorl, and 

 gibbous or even spurred below. 



* North- West Himalayan and Western Tibet Forms. 



16. P. rosea, Royle ; Kullu and Chamba to Kashmir, 12-14,000 feet. 



17. P. Harrissii, sp. nov. ; Chitral, 8-11,000 feet. 



18. P. elliptica, Royle ; Kashmir to Ladak, 8-12,000 feet. 



19. P. hazarica, Duthie; Hazara. 



20 (21). P. sibirica, Jacq. ; Zanskar to Lahul, 13-15,000 feet. (A smaller 

 plant than P. involucrata, and with pink flowers.) 



** Central and Eastern Himalayan and Tibetan Forms. 



21 (20). P. involucrata, Wall. ; Kashmir to Sikkim, 12-15,000 feet. 



22. P. tibetica, Watt ; Kumaon, Tibet, to Sikkim frontier, 15-17,000 feet. 



23. P. concinna, Watt ; Sikkim, Tibetan passes, 15-17,000 feet. 



Section 4 : Purpurea. — Leaves thick, smooth, usually quite 

 glabrous, shining, more or less mealy on the under surface only or 

 all over, lanceolate to obovate-spathulate or even ovate-cordate, 

 midrib flattened, expanded and veined on the surface, extending 

 along the blade and forming a winged petiole, a large sheath or a 

 stem-embracing scale, leaves thus frequently borne on a distinct 

 though winged petiole, mostly serrulate on the top half of the blade. 

 Inflorescence umbellate (that is to say, attached to the common 

 peduncle by pedicels), rarely solitary, more often verticillate ; scape 

 much longer than the leaves, swollen at the extremity where the 

 bracts form a more or less i-seriate whorl, not dilated below, but 

 sometimes connate around the pedicels, occasionally almost awl- 

 shaped. Flowers yellow, purple, or blue, usually numerous, but 

 occasionally few or solitary. Corolla, tube expanding within the 

 * See footnote on p. 199. 



