452 MH. N. D. SIMPSON ON THE PLANTS OF 



Ageostis ALBi, Linn. 



No. 455. Driest part of the Ulu Kern valley-steppe. 



Distrlhution. Europe, N. Asia, N. Africa, N. and -S. America, Australia 

 and New Zealand. 



Dbyeuxia lapponica, Kunth. 



No. 6. Dry mountain-hiummit of the Kizil Taiga where the surface is even 

 and not too rocky. 



Distrihution. Arctic Europe, Altai, Baikal and Yenisei regions, and in 

 N. America. 



Phragmites oomjiuxis, Tjin. 



No. 'J7. Fresh-water lagoons on eJiies of desert lakes, Achit Nor. 



No. 129. Southern aspects from 900 to 1700 m. in the neighbourhood of 

 streams and under rather moist conditions, southern Great Altai ilts., upper 

 Kran River. 



D'lstrlhution. World-wide. 



Catabeosa aquatica, Beanv. 



No. 31. Margins of swamps or small lakes. Immersed in water, Tula 

 liiver. 



Distriliiitioii. Temperate regions of the N. hemisphere and in S. America. 



Melica nutans, Linn. 

 No. 327. Upper Amil River. 



Distrihution. Europe and N. Asia, extending southwards into Asia Minor 

 imd Kashmir. 



Poa altaica, Trill. 



No. 3!M;. Shade of Larch and Scotch Pine in valley bottoms of Sliabash 

 and Kamsara Rivers. 



Distrihution. The Altai region. 



P'-.A Peicei, 2s. D. Sini/i.^on, sp. n. (PL 23. figs. 4-12.) 

 A finis P. inai:roadi/ci, Trautv. et Mey., sed panicula compactiore, olumis 

 min iribus nee acuniinatis, pedicellis laavibus, foliis supra subtustpie olabris 

 disfincta. 



( idnii 35 cm. alti, geniculati, rigidi, Ifeves, glauci, basi vaginis vetustis 

 obt- ;ti. Foliorum lumiiue subglauca;, lineares, acut.-v, curvata?, rio-idse 

 ■i-i .'m. longse, 0'5 cm. lata?, prieter margines et carinam aspernlas Ireves, 

 ]ili. as vel explanat;e ; ligula3 ovatfe 0-1-0-3 cm. long;v, hyalino-scariosEe ; 

 va^ii. e quam foliorum caulinorum laminae multo longiores, superne carinatse 

 glibrse, lasves, valde striatse. Panicula erecta compacta, 7 cm. longa ; ram 



