1837.] 



On the Genus Impatiens, 



15 



differing from the former in having a spur, and from the latter in the 

 spur being almost rudimentary and curved outwards, in place of as 

 long as the flower, and straight. These differences are perhaps too 

 slight, and might, in a considerable number of specimens, be found to 

 pass into one another, in such a way, as to admit of all three being 

 united under one name, but for the present, I do not feel warranted in 

 making the attempt. 



§ 7. Leaves opposite or verticelled, pedicels several floioered. 

 17. Impatiens verticellata. (R. W.) 



Herbaceous, diffuse, glabrous. Leaves verticelled, long, narrow, 

 lanceolate, remotely bristle serrated. Peduncles shorter than the leaves, 

 axillary, solitary, erect, 2—3 flowered. Pedicels about half the length 

 of the peduncle. Flowers large. Upper sepal, oblong, erect, somewhat 

 cuniate at the base ; lateral ones, about half its length, subulate, re- 

 flexed. Spur slender, tapering, curved, much longer than the petals. 

 Petals, oblong, lax, longer than the upper sepal, deeply 2 lobed, lower 

 lobe much longer than the upper. Capsule oblong, obtusely 5 angled ? 

 slightly drooping. 



Hab. Shevagerry, in the gravelly beds of mountain streams ; flow- 

 ering in August. 



This beautiful species forms large clumps or beds, growing in the 

 stiller parts of mountain streams, where gravel can collect, and is 

 one of the most conspicuous and lively looking of the genus, from its 

 large, deep crimson flowers, contrasting so strongly, with the dark 

 green of its foliage. The whole plant is glabrous, the stems diffuse 

 and jointed, each joint bearing a whorl of 4—6 narrow lanceolate leaves 

 4 — 6 inches long and scarcely ever one broad, much attenuated at both 

 ends, paler beneath, and furnished, contrary to the usual character of 

 the order, with subulate stipules ; peduncles erect, about 2 inches long, 

 bearing 2—3 pedicelled flowers pedicels about half the length of the 

 peduncles, filiform. 



II.— Clavis Analytica of the Cgnvolvulace^e of the Peninsula of 

 India. — By G. Walker-Arnott, Esq. a. m., f. l. s. and r. s. Edih. 

 Communicated, with Observations and Figures, by Dr. Wight. 



TO THE EDITOR OF THE MADRAS JOURNAL OF LITERATURE AND SCIENCE, 



Sir, — The subjoined Clavis Analytica of the Peninsular Convolvula- 

 cea (prepared and communicated to me by G. Walker-Arnott, Esq.) 

 I hope may prove as useful to y our botanical readers as I have found 

 it, in determining the species of that beautiful, but difficult, and hither- 



1 m 



