Plumbaginee.| THE HIMALAYAN MOUNTAINS. 311 
Baron Humboldt’s Isothermal lines: giving appropriate names to each, and arranging 
under them, according to their climates the several regions of the globe, &c.; we 
should have brought together all those which corresponded in meteorological pheno- 
mena, in vegetation, and animal life, frequently in agriculture, often in manners and 
customs, as these so frequently depend upon climate. Mountains might be simi- 
larly divided into zones or belts, according as elevation, climate, and vegetation, 
displayed sufficient differences to warrant the distinction. _We have frequently seen, 
that according as' we: observe the natural phenomena, at the base or towards the 
apex of these mountains, the correspondence is either with tropical, European, or polar 
regions. This might be indicated by a word compounded of that of the mountain 
range, and of the zone to which the belt corresponded, as Tropico-Himalayan, Arcto- 
Himalayan, &c., which would sufficiently indicate the nature of the vegetation at 
different elevations, as well as the geographical situation. The Author hopes, on some 
future occasion, to follow up this subject in its details as well as its generalisation. 
_ Primula purpurea-;--foliis oblongis lanceolatis basi attenuatis in petiolum decurrentibus subtus 
pulverulentis marginibus integris revolutis, umbella multiflora, calyce profunde 5-fida, laciniis linea- 
ribus elongatis intus albicantibus—Afiinis P. Stuartii. —Tab. 77. fig. 2. 
_ Hab. Kedarkanta, at an elevation of 12,000 feet. 
P. obtusifolia; foliis obovatis obtusis basi attenuatis membranaceis subtus farinosis, margine sub- 
crenato undulato, petiolis latis membranaceis, umbella erecta pauciflora, corolla sub-hypocrateriformi.— 
Tab. 77. fig. 1. 
Hab. Lippa, in Kunawur. I am indebted to my friend, W. Wilson Saunders, Esq., for the drawing 
of this plant. 
P. rosea; foliis Lenetlatis acutis serratis utrinque glaberrimis breve petiolatis dense fasciculatis, 
umbella multiflora erecta, calyce tubolosa 5-fida laciniis linearibus corolla tubo subzquantibus, corolle 
limbo plano segmentis emarginatis.—Tab. 76, marked 75, fig. 1. 
Hab. Kedarkanta. 
P. elliptica; foliis longe petiolatis ellipticis serratis in petiolum decurrentibus, umbella pauciflora, 
corolle segmentis obcordatis emarginatis—Tab. 76. fig. 2. 
Hab. Cashmere. 
132. PLUMBAGINEZ. 
The Plumbaginee form a small order chiefly found in temperate parts of the world, 
as in the south of Europe, the Mediterranean and Oriental regions, and the Cape of 
Good Hope ; but. species occur also in very cold, as others in very hot parts of the 
world. Among the latter is the genus P/umbago, found in India and America, and 
having the distribution of the order north and south. P. zeylanica extends from 30° 
N. in the plains of India, to 34° S. near Port Jackson. gialitis, a genus found by 
Mr. Brown among the mangroves of New Holland, has also a species, 4. rotundifolia, 
in the Sunderbunds, or Delta of the Ganges. Plumbago Europea is well known for its 
acrid and even caustic nature, while P. scandens is, for the same properties, called in 
St. Domingo herbe-au-diable ; so, in India, P. rosea is named “ Radix vesicatoria” by 
Rheede; while P. zeylanica is called by the natives chitraka ; also ‘‘ Vahni, and all the 
names of fire.” 
1383. PLANTAGINE4. 
