242 
( Eu)Pogonatum x. Pogonatum. 
Pohlia Brid. Nees et auct. v. Webera. 
Polla Brid. (Bryum-Polla) v. Mnium. 
Polypodiopsis C. Müll. v. Conomitrium II 48. — J. B. 74-75 
134 (qua genus). 
Polytrichadelphus C. Müll. I 706, II 717. — J. B. 78-74 
944. 71-18 453. 
- Polytrichum Dill. em. Bryol. eur. I 729, II 718, 0b — 
J. B. 73-74 267. 77-78 454, DOT. 
Polytrichum Dill. L. et auct. v. Genera Fam. Polytriehearum. 
Orthotrichum. 
Porotriehum Brid. II 204, 730. — J. B. 75-76 300. 77-78 466. 
(Eu)Porotrichum C. M. v. Porotrichum. 
Potamium Mitt. II 114, 724. — J.B. 75-76 210. 77-78 460. 
Pottia Ehrh. em. I 189, II 666. — J. B. 71-72 34l. 
71-18 402. 
Pottia Lindb. C. Müll. et auct. v. Phaseum 'e. p. Hyophila. 
Pharomitrium. Barbula e. p. 
Pottiopsis Sb. v. Barbula. 
Powellia Mitt. II 55, 756. — J.B. 74-75 139. 77-78 492. 
Prionodon C. Müll. H 1925, 725. — J. B. 75-76 221. 
: 71-18 461. 
Pseudo-Chetomitrium Hpe. v. Hypnum. 
Pseudo-Desmatodon Sb. v. Barbula. 
Pseudoleskea Brceh. e. Schpr. II 306, 739. — J. B. 76-77 
240. 77-78 415. 
Pseudopilotrichum C. M. v. Pilotrichella. Papillaria. 
Pseudo-Rhynchostegium Lindb. v. Isopterygium. 
Pseudo-Tazxithelium Sb. v. Plagiotheeium. 
Psiloplum Brid. I 696, II 716. — J. B. 73-74 234 
71-78 452. 
Psilotheca C. Müll. v. Encalypta. 
