m u s c i. 99 



indeed, it should not be abandoned entirely, it would seem proper not 

 to supersede Hedwig's name tamariscinum, for a moss first so described 

 and figured by him, as to place its identification beyond doubt. The 

 specific name tamarisci, notwithstanding its close resemblance to tama- 

 riscinum, might still be retained for Swartz's Jamaica Hypopterygium, 

 if it can be identified from his description. 



5. Hypopterygium didictyon, G. Mull. 



Hypopterygium didictyon, C. Mull. Synop. Muse. Frond. 2, p. 9. 

 Hypnum laricinum, Hook. Muse. Exot. t. 35, ex Hook. fil. & Wils. in Flo. Antarct. 

 p. 117. 



Hab. Orange Harbor, Fuegia. 



Readily known by its dioicity, its subrotulate ramification, its pale, 

 greenish-yellow foliage, and its distinctly margined leaves, the basal 

 and central cellules of which are larger than those towards the margin 

 and apex. 



6. Hypopterygium Brasiliense, Sulliv. (Tab. 26.) 



H. monoicum ; caulibus erectis in/erne simplicibus, superne in frondem 

 erectam pinnato-divisis ; foliis disticliis asymmetrice cordato-ovatis 

 oblique acuminulatis anguste pellucido-marginatis semi-costatis apice 

 serrulatis, cellulis o3qualibus rhombeis subopacis, stipulatformibus rotun- 

 datis cuspidatis marginatis continuo-costatis ; capsula ovali horizontals 

 collo longiusculo, operculo cupulato longe rostrato, peristomio hypnoideo 

 binatim ciliolatis; pedicellis sparsis longiusculis crassiusculis ; peri- 

 clioBtialibus ecostatis. 



Hypopterygium Brasiliense, Sulliv. in Proceed. Amer. Acad. Art. Sci. Jan. 1855. 



Hab. Organ Mountains, Brazil. 



Stems erect, 1-1 1 inches high, below simple blackish, furnished 

 with scattered appressed scarious leaves, above pinnately branched 

 into an erect, frond-like top, of a more or less ovate outline ; branches 

 mostly simple, the lower ones moderately ramulose. Leaves bright 

 green, distichous, slightly imbricating, obliquely cordate-ovate, with 



