440 MB. N. D. SIMPSON ON THE PLANTS OF 



Anabasis aphylla, Linn. 



No. 201. Stony desert in the Dzungarian Gap. 



Distribution. Southern Russia, Asia Minor, S.E. Persia, Turkestan, and 

 Mongolia. 



Anabasis beevifolia, C. A. Mey. 



No. 87. Stony desert under driest vegetative conditions, desert hills and 

 barren valley steppes of N.W. Mongolia. 



Distribution. Altai, western Mongolia, and Turkestan. 



Anabasis phyhophoea, Kar. et Kir. 



No. 166. Stony and sandy deserts under the driest conditions between 

 450 and 700 m., Kemchik and Kran Valleys and on the plains o£ the Qpper 

 Irtish basin. 



Distribution. Dzungaria and the Altai region. 



Nanophyton CASPICU3I, Less. 



No. 209. Driest desert above irrigated land on the Borotella plains and 

 near Dja Kul. 



Distribution, Altai, N. Mongolia, and Turkestan. 



Halogeton aeachnoideus, Moq.-Tand. 



Desert regions of N.W. Mongolia. 



Distribution. Altai, N. Mongolia, and Turkestan. 



POLYaONACEiE. 



Ateaphaxis lanceolata, Meisn. 



No. 487. Flint and gravel desert between Dja Kul and Djardan. 



Var. DIVAKICATA (Ledeb.), Meisn. 



No. 145. Stony desert on hill-sides at 760 m. in the Kran River Valley. 



Distribution (of species). Dahuria, Altai, Mongolia, and Turkestan. 



Polygonum Bistoeta, Linn. 



iS'o. 47. Mountain-sides above 2100 m. where the soil is moist and 

 peaty, forming alpine meadows, or on dry shady slopes where some soil has 

 accumulated ; at the head of the Saklva River. 



No. 367. Highest mountain-tops 1950 m., very dry, Kandart Jits, also 

 open steppe of Shabash Valley with dry flora. 



Distribution. N. Europe and alpine regions in central Europe, eastwards 

 through northern and central Asia to China and Japan, and N. America. 



Polygonum polymokphum, Ledeb., var. S. undulatum, Ledeb. 



No. 383. Open and dry steppes in valley bottoms, Upper Shabash River. 



Distribution (of variety). Southern Siberia. 



