22 CRYPTOGAMIA. 



7. Orthotrichum crassifolium, Hooh.fil. & Wils. 



Orthotrichum crassifoUum, Hook. fil. & Wils. in Flo. Antarct. p. 125, t. 57, f. 8. 



Hab. Cape Horn. 



2. MACROMITRIUM, Brid. 

 1. Macromitrium Reinwardtii, ScJnvcegr. 



Macromitrium Reinwardtii, Schwaegr. Suppl. 2, 2, p. 69, t. 173. 



Hab. Kaala Mountains, behind Honolulu, Oahu; Mauna Loa, 

 Hawaii ; Sandwich Islands. Mountains of Tahiti, Society Islands. 



2. Macromitrium Tongense, Sp. Nov. (Tab. 5.) 



M. pusillum; caule repente aphyllo ; ramis confertis densissime foliosis 

 subglobosis ; foliis oolong o-ligulatis obtusis continuo-costatis ii if erne 

 curvulo-areolatis papillosis, superne guttidatis ; capsula cylindracea 

 subcurvula longicolla breviter-pedicellata, peristomio simplici discrete 

 16-dentato; calyptra longa pilosa. 



Hab. Tongatabu, one of the Friendly Islands. 



Forms thin dense dark-brown patches. Stems creeping, divided, 

 leafless; branches, very numerous, short, 1-2 lines high, densely 

 leaved, subglobose. Leaves, oblong-ligulate, obtuse, apiculate by the 

 slightly excurrent costa; the upper half plain, thick, opaque, com- 

 posed of minute subrotund granular cellules; the lower half subcom- 

 plicate-concave, diaphanous, cellules large, oblong, lunate, papillose. 

 Perichaetial leaves oblong-lanceolate, pointed, plicate ; capsule cylin- 

 drical, erect, slightly curved, with a long collum : pedicel short, 1-1 i 

 lines high : peristome single ; teeth 16 equidistant, with a median 

 line. Operculum long-rostrate. Calyptra covering the whole capsule, 

 pilose. — Probably dioicous. 



Resembles M. Nepalense ; but that species has acuminate leaves, the 



