2. Foliorum alae tota latitudine fere costa occupatae, mar- 
gine argute serratae.’ 
6. POoLYTRICHUM COMMUNE L. 
Maximum, laxe caespitosum; caespites saturate virides. 
Folia patenti-recurva, longissima, basi vaginante submem- 
branacea nitido-albicantia, lamellarum margine sulco di- 
viso; perichaetialia erecta, longissima, vaginantia, inter- 
na membranacea, in pilum producta. Calyptrae indumen- 
tum maximum infra capsulam defluens, ferrugineum vel 
rufescens nitore sericeo. Capsula in apophysi discoidea 
acutangula, alte pedicellata, rufo - fusca, sicca evacuata 
horizontalis. Operculum e basi depresso - convexa sicci- 
tate plana plus minus longe conico-apiculatum, margine 
rufo - badium vel saturate purpureum. Peristomi dentes 
64, pro capsulae magnitudine parvuli, e membrana ba- 
silari lutescente erecto-incurvi. 
Polytrichum commune L. Sp. Pl. p. 1573. — Hedw. Sp. Musc. 
p. 88. — Brid. Bryolog. univ. II, p. 148. — Br. et Sch. 
Bryol. eur. IV, p. 13, T. 425. — C. Müll. Synops. I, p. 
220. — Schimp. Synops. Musc. eur, p. 448. — Steph. 
Enum. stirp. p. 50. — Weinm. Syllab. II, p. 450. 
Polytrichum yuccaefolium Ehrh. Flora crypt. exsicc. 214. — 
Mart. ‚Br. El. 11054. р. 194. 
Habit. in uliginosis sylvaticis, ericetis humidiuseulis; 
Stepankovo — in loeis sylvatieis humidis vulgare. Spec. 
mosq. in herb. Goldb., Boschn., Czerm., etin Annenk. 
Е]. exsiee. mosq. Cent. V adsunt. 
Fruct. matur. ineunte vere et tempore aestivo. 

Trib. XI. BUXBAUMIACEAE. 
Plantae subacaules parvulae vel omnium minimae, cap- 
sulam proferentes magnam, obliquam, ventricosam ses- 
