IV. ]). Ill; Tmc/an. l''l. Jlaiciil.-Daiuii-. (KSr.d, I) \). 18, no. KiOO. Afiroslis Michuu.vii irin. 

 ])(' (iiaiiiiii. I'liilldr. (liS'^l) |). 2(KJ; Tuiczan. Cat. iiaicai. no. 1271. 



Tiu' ciilins ol the specimens gathered are from 20 to iiO em. Iiii^li. very slender and 

 fine, fioquenlly soniewlial lax and weak. The leaves are to 1,5 nun. broad. It llicre- 

 fore seemed to have to he referred to /. /laccida Kini..!. c. 



In moist, subalpine meadows in woods in the Altaian. Specimens eoUecled at the 

 end of Jnly nearly done flowering. 



Distri))uti()n: Siberia, eastern .\sia, Sakhalin. .lapan. iioitli-weslern part of North 

 America. 



Calamagrostis ncglccia P. de Bcaiiv. I'^ss. Agrostograph. (1812) p. 1.57; Ledei). V\. 

 Ross. IV, p. 428; Turczan. Fl. Baical.-Daliur. (185(i, I) p. 2.5. no. i;51(): i;|,i.i.i. <i>.,. A. it. 

 VII (1914) p. 1597. Anindi) slricla Turczan. Cat. Baical. no. 1283. 



On the borders of a small lake on an islet in the Yenisei, near Minusinsk, in moist 

 pastures on the Sisli-kem, near Ust Algiac, in moist meadows on the Bei-kem, near the 

 mouths of the rivers Kamsara and Tara-kem. 



Distribution: Arctic Islands, northern, central, and eastern Europe, Siberia, nortli- 

 ern Mongolia, eastern Asia, Sakhalin, Japan, Noi-th America, Greenland. 



Calamagrostis Langsdorffii (Link) Trin. De Gramin. Uniflor. (1824) p. 225; Turczan. 

 Fl, Baical.-Dahur. (1856, I) p. 23, no. 1306; Ledeb. Fl. Ross. IV. p. 430; .Iniiiiiiiniri,, 

 Cnhuungroslis Langsdorffii fLink^ Trin. ii fuiinK. <j)()|)5jax i. i:h Tjiyj;. lior. ily;i. IImiu']!. 

 .\i,a,i,. HavKb, VIII, p. 50; Kiii>i.i- *I'.i. A.m. VII (1914) p. 15lts. (^alamagroslis lanceoUda 

 Ledeb. Fl. Alt. I, p. 8(). Calamagroslis Halleriana f. nutans Ledeb. Fl. Ross. IV, p. 

 431. Calamagroslis villosa Mnlel i>ar. Langsdorffii (Trin.) Hack, in Somm. N. G. B. 

 It. XX Y (1893) p. 98. 



Scattered in moist meadows in woods, on the banks of rivers, and on the borders 

 of swamps. Rather common on islets in the river Abakan, at Kushabar, in the Amyl valley, 

 at Ust Algiac, on the banks of the river, at Ust Sisti-kem. in moist, grass-grown islets 

 in brush-wood in the Bei-kem. near the mouths of the rivers Kamsara and Tara-kem. 



The species occurs in a nuiltitude of varieties, which hardly possess any systema- 

 tical value, connected as they are by intermediate forms. The glumes are partly comple- 

 tely glabrous, and partly pass through various intermediate types into forms with the 

 outer glumes finely and densely pubescent, and the sheaths vary from being quite 

 smooth to markedly rough. In subalpine pine-woods in the Altaian, I have gathered 

 specimens belonging to this species, distinguished by a more delicate and slender growth, 

 the panicle being shorter, poorer, and more flaccid, and the branches more spread and 

 open than in the typical form. The glumes are generall}^ slightly and finely hairy (f. 

 gracilis). Taken flowering at the end of July. 



Distribution: The species is distributed over eastern Europe, Siberia, northern 

 Mongolia, eastern Asia, Sakhalin, Japan, North America. 



123 



