REVUE BRYOLOGIQUE : 
| PARAISSANT | Tous Les Deux Mois 
de 
Les Manuscrits doivent être écrits @: français, en latin ou en anglais. 
Sind : in Euro Sr D F4 — Gyroweisià 
Pariseer. — La F + e de la PE su- 
Vér érience. MURS — dr Ille-et-Vilaine. DE 
ILIBERT,—Biblio- 
Bibliographie. — 
en, nu ns 
de. St-Rivoal, | 
the rig e rea 
most interesting additic Er 
cause it forms a proper peculiar subgen F HD I per 
in BraITHwaITE , the Sphagnacea or Peal-Mosses of Europe 
nd North-America (1880), pp. 30 and 85, called Hemitheca, 
ery distinct from all other Sphagna by : plants of peculiar 
habit, somewhat resembling thai of Æypnum sormentosum or 
amineum , firm, slender and elongated ; branches lateral, 
itary or sometimes in pairs, ghort , distent, slender, 
bclavate, obtuse, arcuato-decurved ; leaves and perichætial 
ovate-oblong, obiuse, all with very large and in- 
ed chforophyllose cells, and densely and very broadly 
hyaline cells, porose only at the top of the 
the leaves ; theca very small, after the fall of 
hemispherical , videmouthed , resem- 
