140 PROCEEDINGS OP THE AMERICAN ACADEMY 



the leaves, a number of species could be described from single speci- 

 mens taken separately for examination. L. & J.] 



Ststegium erythrostegitjm:, Br. & Sch. Caulescens, parce 

 ramosum. Folia kuniida patula, sicca cirrhoso-tortilia, e basi ovali 

 anguste lanceolata, concava, margine infiexa, solide costata ; peri- 

 chagtialia longiora, angustius acuminata. 



Flores monoici ; masculus in innovationibus terminalis, tandem 

 pseudo-lateralis, gemmiformis, pentaphyllus, antheridiis brevipedicel- 

 latis, paraphysibus circiter 10 brevioribus. 



Capsula immersa, in planta sicca emersa, ovalis ; operculo persis- 

 tente conico rufulo ; pedicello capsulam requante pallido recto exsic- 

 catione nonnunquam curvulo. 



Phascum crispmu, var. rostellatum, Hooker & Wilson in Drum- 

 mond's Musci Americani (Southern States), no. 10. 



Hab. Near New Orleans. 



Orthotrichoi brachytrichum, Schimp. Humile caespitulosum, 

 coespituli pallescente-virides, aetate fusco-luteo variegati. Planta vix 

 semiuncialis, ramosa, tenella. 



Folia ex ovato et oblongo lanceolata, superiora elongato-linealia, 

 apiculata, lutescente-viridia, acute carinata, margine subrevoluto-reflexa, 

 minutissime papillosa, areolis partis superioris parvulis rotundatis, 

 basilaribus rectangulis hyalinis ; costa angusta sub apice evanida. 



Flores monoici ; masculi in ramulis propriis ut in Orth. pallente, in 

 eodem ramulo complures geuimiformes ; antheridia 8-10 eparaphysata 

 vel paraphysibus singulis. 



Fructus : calyptra pallide straminea apice pilis paucis brevibus 

 instructa. Capsula in pedicello vaginulam cylindricam nudam tubo 

 longo auctam asquante supra folia perichaetialia erecta, paulum emer- 

 gens, unacum collo longiusculo subcylindrico-oblonga, lutescens, striis 

 luteis siccitate costas efformantibus ; operculum sulphureum convexum 

 apiculatum ; peristomii dentes 8, parvi, bigeminati, integri, areolis 

 magnis punctulatis ; cilia 8, dentibus aequilonga, laevia ; membrana 

 capsularis tenuis, laxe texta, reti subrectangulo tenui in striis paulum 

 crassiore, stomatibus perpaucis magnis emersis. 



0. obtusifolium, Drummond's Musci Americani (Northern States), 

 no. 157. 



Hab. On trees, from Upper Canada to the Rocky Mountains. 



Plagiothecium pseudo-Silesiacum, Schimp. Monoicum. Rami 

 subcomplanato-foliosi, foliis anticis adpressis lateralibus et posticis 

 patentibus confertis ovatis tenui-acuminatis serratis ecostatis angus- 



