I 
38 . 
4169 . ochraceum var flaccidum Hygrohypnum 
(Milde) Amann 
4170 . ochraceum var. schiffneri Hygrohypnum var nov 
4171 . ochraceum var uncinatum Hygrohypnum 
(Milde) Loeske 
4172 . ochraceum var uncinatum Hygrohypnum 
(Milde) Loeske 
50... ochromitria C. Muell . Aloina (Aloidella ) sp nov 
3471-3473.... octoblepharis Schwaegr. Fabronia 
5528. octodiceras C. Muell . Papillaria sp nov 
7790. odontocalyx (C. Muell.) Jaeg. Stereophyllum 
5730-5741.... oederi (Gunn.) Limpr. Plagiopus 
6638. oedipyxis C. Muell . Rhynchostegium sp nov 
1317. oelandicum Philib. Bryum 
1318-1319.... oeneum Blytt Bryum 
456. bhioense B.S.G. Archidium 
6110-6111.... ohioense Ren. et Card. Polytrichum 
4694a. ohioensis Sull. Leptodon 
4038. olfersianum Hornsch. Holomitrium 
6532. olfersii (Hornsch.) Jaeg. Rhaphidostegium 
5209-5210.... oligocarpa Bruch Neckera 
6327. oligocladum Limpr. Ptychodium 
803-804. olympicum Jiir. Brachythecium 
1320 . opdalense Limpr. Bryum 
3872-3881.... orbicularis B.S.G. Grimmia 
3882-3885.... orbicularis var persica Grimmia 
Schiffn. 
3156-3157.... oreadelphum C. Muell. Ectropothecium 
3329. oreganum (Sull.) Jaeg. Eurhynchium 
6806. ornellanum Mol. Scleropodium 
2020. ovafolia C. Muell. Cryphaea 
6492 . orthocarpum Wils. Racopilum 
5025-5030.... orthorhynchum Brid. Mnium 
5638 . orthostichacea C. Muell . Philonotis sp nov 
2996-2998.... orthothecioides (Lindb.) Roth Drepanocladus 
6459. orthotrichaceum (C. Muell.) Racomitrium 
Par. 
6775-6779.... ,®smundacea Web. et Mohr; Schistostega 
3568-3574.... osmundioides Hedw. Fissidens 
5639 . osterwaldii Warnst. Philonotis 
3886-3900.... ovata Web. Grimmia 
3901. ovata var affinis (Hornsch.) Grimmia 
B.S.G. 
1321 . oxystegium Hag. Bryum 
1322 . pabstianum C. Muell. Bryum 
3962.. pabstianum (C. Muell.) Par. Gymnostomum, 
6769. pachyphyllum Schif fn . Schistidium sp nov 
6493 . pacificum var gracilescens Racopilum 
Besch. 
8196. pagorum (Milde) De Not. Tor tula 
1323-1337.... pallens Sw. Bryum 
