Calamagrostis data Blytt, Norsk Flora (1847) p. 143; JIhtbhhobt,, Calamaqroslis 

 Langsdorffii (Link) Trin. h 6jih3k. (|)opMaxi.-Bi. TpyA- Bot. Mys. Hmnep. AKa«. HayKi, VIII, 

 p. 50; KpBiJi. $jt. A.IT. VII (1914) p. 1600. 



On islets in the Yenisei, in moist brush-wood. Specimens gathered at the beginning 

 of June, not yet bearing full-blown flowers. 



Distribution: Northern Europe, Siberia, eastwards to the Yenisei. 



Calamagrostis epigeios (L.) Roth, Tent. Flor. Germ. I (1788) p. 34; Ledeb. Fl. Alt. 

 I, p. 87; Turczan. Cat. Baical. no. 1279; Ledeb. Fl. Ross. IV, p. 432; Turczan. Fl. Baical.- 

 Dahur. (1856, I) p. 23, no. 1305; Kpti-i. $j. Ajit. VII (1914) p. 1603. 



In dry brush- wood on the islets in the junction of the river Abakan with the 

 Yenisei, near Kalna in the Amyl valley, scattered along the Upper Sisti-kem. Flowering 

 in July and the first half of August. 



Distribution: Temperate portions of Europe and Asia, South Africa. 



Aera caespitosa L. Spec. PI. ed. II (1762) p. 96; Ledeb. Fl. Alt. I, p. 90; Turczan. Cat. 

 Baical. no. 1292. Deschampsia caespitosa P. de Beauv. Ess. Agrostograph. (1812) p. 

 160; Ledeb. Fl. Ross. IV, p. 421; Turczan. Fl. BaicaL-Dahur. (1856, I) p. 31, no. 1317. 



Common in moist meadows in woods, near Kushabar, in subalpine and alpine 

 tracts near the Sisti-kem and in the Altaian, where full-blown at the end of July, and also 

 on the banks of the Bei-kem, near Tara-kem, and at Sebi. 



Distribution: Europe, temperate portions of Asia, Africa, North America, Austraha. 



Trisetum flavescens (L.) P. de Beauv. Ess. Agrostograph. (1812) p. 88; Ledeb. Fl. 

 Alt. I, p. 91; Turczan. Cat. Baical. no. 1296; Kptu. $ji. Ajt. VII (1914) p. 1609. Avena 

 flavescens L. Spec. PI. ed. II (1762) p. 118; Ledeb. Fl. Ross. IV, p. 417; Turczan. Fl. 

 BaicaL-Dahur. (1856, 1) p. 32, no. 1319. 



subspec. copiosum subspec. nov. 



Caulibus validis et foliis lalis praecipue dislinctum. Caules plus minus 1 m. alti, 

 rigidi, erecti, sulcati, semper glabri. Folia 8 — iO mm. lata, vaginae semper laevissimae. 

 Gluma superior longiiudine paleas aequans vel paululum brevior, comparaie angusta, in 

 medio laiissima, utroque sensim angusiior, in apice atienuata ei roiundaia, nunquam extracta 

 vel acuminata, sed nonnunquam obtusa et truncata, trinervia. GlUma inferior angusta, 

 paene recta, e basi sensim attenuata et acuminata, uninervia. Utraque gluma secundum 

 nervum medium scabra. Falea inferior angustior quam in forma typica, infra medium 

 semper laiissima, superne sensim angustior et arista longiore scabra instrucla. Panicula 

 satis multiflora, rami paene omnino glabri, sub ipsa spicula tantum nonnunquam 

 scabriusculi. Spiculae pauciflorae, plerumque 2, nonnunquam 3, flores ferentes. 



The widely distributed species Trisetum flavescens (L.) P. de Beauv. varies con- 

 siderably, especially in hairiness, richness in flowers, size, and colour of the spikelets, 

 density of the panicle etc., and has been divided into a great number of forms, of 



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