INTaODUCTORY ESSAY. 221 



15,000 feet is of course far from complete ; those with an as- 

 terisk (*) have been ohserved above 17,000 feet. 



Corydalis Tibetica. *Aster alpinus. 



*Draba aizoides and others. * Artemisia. 



*Parrya. *Leontopodium. 



*Cerastium. *Allardia. 



*Lychnis. *Pyrethrum. 

 *Thylacospermum. Li^laria. 



*Myricaria. *Nepeta multibracteata. 

 *Biebersteinia odora. Cynoglossum. 



Oxytropis cJdliopliylla. Lithospermum ewchromon. 



*Astragali, several. *Grymnandra, 



Thermopsis. *Primxda. 



Potentilla Salessovii. Eheum. 



„ anserina. Ephedra. 



* ,, Meyeri. *Carices. 

 *Sibbaldia procmiibens, var. *Stipa. 



Chamserhodos sdbulosa. *Lloydia serotina. 



*Saxifraga cernua. *reBtuca ovina, and other 

 *Seda. Grasses. 



*Saussurea3, tliree species. 



Owing to the aridity of the climate all Cryptogamice are 

 extremely rare : only three or four Ferns occur ; Mosses are 

 scarcely more common, and never fruit. A few crustaceous 

 Lichens, on stones, and half-a-dozen Fungi, including several 

 British species, have been collected. 



Western Tibet is tolerably well known botanically*. It 

 was first explored by Dr. Falconer, who visited Hasora, Dras, 

 and Balti, and made a fine Herbarium, which is unfortunately 

 still unexamined and undistributed, at the India House. 

 Jacquemont visited Piti in 1830, and Dr. Eoyle's collec- 

 tors were there also. Dr. Thomson's collections were made 

 in Piti, Balti, Rupchu, Ladak, Zanskar, Nubra, and Dras. 

 Captain Henry Strachey made an excellent collection in the 



* Thero are a few plants in tho WaUichian Herbarium, collected by Moor- 

 croft, the fii'st explorer in modern times of Ladak, and ticketed as from that 

 place, but (hoy are mostly outer Ilimalayan plants. 



