44 — 



Cathariiicen. 



33. Catharinea angustataSw. — v. major et minor. — Prope 

 Baltimore. — Obs. Varietas minor Cath. undulatae ß mi- 

 norem valde aemulatur, sed nervo lamcllato latissimo certe 

 dilfert. 



P 1 y t r i c h e e n, 



34. Poli/trichum commune L. — et var. /?. perigoniale Mx. 

 Forma «. pr. Charlestown et ß. pr. Clarkeville lecta. — 

 P. perigoniale a formis europaeis difFert: surculo graciliore, 

 foliis magis appressis, Capsula cubica, climatis efficientia 

 mutatura. Folia perichaetii diapLana quoque in exemplis 

 europaeis vidi. 



35. P. pensylvanicum Hedw. (P. brevicaule Brid. ) — pr, 

 Baltimore. 



Bartramieen. 



36. Bartramia crispa ß, heteromalla Brid. — Prope Balti- 

 more. — Obs. B. heteromalla Brid. caule graciliore, foliis 

 angustioribus parum crispis, saepe homomallis, ad formas 

 extenuatas climatis efficientia productas, adnumeranda. 



37. JB. Muehlenbergii Schwaegr. — pr. Charlestown in pa- 

 ludos. 



B r y e e n. 



38. jlulacomnion palustre Schwaeg. — pr. Charlestown. 



39. Arrhenoptcrmn heterosttchnm Hdw. — pr. Baltimore. 



40. Bri/um argcnteutn ß. lanatum Brid. — pr. Baltimore. 

 Obs. B. lanatum Brid. foliis longo piliferis, quoque surculo 

 et sota longioribus forma americana, etiam in America 

 australi et Asia invenitur. 



41. Br, caespitosum ß. angustifolium Brid. — pr. Balti- 

 more. — Forma americana folia angustiora habet a B. cae- 

 spititio non specifice separanda. 



42. Br. roseum Hedw. — Cowe Mountain. 



