MOSSES WITH A HAND-LENS 201 



PAGE. 



51 Trematodon ambiguus (Hedw.) Hornsch 40 



*52 T. longicollis Mx 40 



GRIMMIACEAE Si 



53 Grimmia apocarpa (L.) Hedw SS 



54 G. 6lneyi Sulliv S7 



55 G. Pennsylvanica Schwaegr 57 



56 Hedwigia albicans (Web.) Lindb S2 



(H. ciliafa). 



57 Ptychomitrium incurvum (Schwaegr.) Sulliv 53 



58 Rhacomitriiim aciculare (L.) Brid S9 



59 R. fasciculare (Schrad.) Brid S9 



60 R. microcarpum (Schrad.) Brid 59 



TORTULACEAE 62, 



61 Astomum SuUivantii Schimp 2y 



62 Barbula convoluta Hedw 70 



63 B. unguiculata (Huds.) Hedw 6y 



*64 Desmatodon plinthobius Sulliv. & Lesq 74 



*6s Didymodon rubellus (Hoffm.) B. & S 38 



65 Gymnostomum curvirostre (Ehrh.) Hedw 64 



*67 G. rupestre Schleich 64 



68 Pottia truncatula (L.) Lindb 91 



(P- Inincata). 



*6g Tortella caespitosa (Schwaegr.) Limpr 70 



(Barbula caespitosa). 



70 T. tortuosa (L.) Limpr 70 



(B. tortuosa). 



71 Tortula muralis (L.) Hedw 72 



(Barbula muralis). 



72 T. ruralis (L.) Ehrh 74 



(B. ruralis). 



*73 T. ruraliformis (Besch.) Dixon 74 



74 Weisia viridula (L.) Hedw 64 



ENCALYPTACEAE 76 



75 Encalypta ciliata (Hedw.) Hoi¥m 78 



76 E. streptocarpa Hedw 76 



ORTHOTRICHACliAE .' 78 



77 Drummondia clavellata Hook 79 



78 Orthotrichum anomalum Hedw 82 



*79 O. obtusifolium Schrad 86 



* Species marked * aie not illustrated. 



