22 SPHAGXACE^. [Sphagnum. 



in the lower part, empty in the upper ; branch-leaves denticulate 

 above the middle and scabrous at the cucuUate apex, with the 

 triangular ducts free on the concave side of the leaf, and the 

 walls of the utricles bordered by a fringe of rudimentary fibres ; 

 perichsetial leaves large, oblong, obtuse, fimbriate at the apex : 

 flowers moncBcious, and the small capsule short-pedicellate. — 

 Icon. Muse. Suppl. 9, t. 1 ; Austin, Muse. Appal. Exsicc. n. 2 ; 

 Braithw. Sphag. 33, t. 3. 



Hab. Swamps in Ocean County, New Jersey (Austiji, E. A. Rau); 

 also found in Sweden by Lindberg. 



22. S. Portoricense, Hampe. Dioecious (?), very large, 

 generally floating, the exposed portion greenish, the immersed 

 grayish brown ; stems solid, the cortical cells in 3 or 4 layers, 

 fibrillose and slightly porose ; branches in fascicles of 4 or 5, 

 some ament-like, attenuate at base, erect or arcuate, others 

 longer, more slender and pendent : stem-leaves appendiculate 

 or substipulate, broadly triangular-ovate, entire, the utricles 

 without pores and with few fibrils; branch-leaves closely 

 imbricate, cucullate and scabrous on the back at the apex, 

 broadly ovate, obtuse, minutely fimbriate all around like the 

 stem-leaves, narrowly margined, the utricles fibrillose and 

 porose and with the walls made papillose by the bases of abor- 

 tive fibrils; ducts as in the last species: fruit unknown. — 

 Linncea, xxv. 359 ; Austin, Muse. Appal. Exsicc. n. 1 ; Sulliv. 

 Icon. Muse. 3, t. 2 ; Braithw. SjDhag. 32, t. 2 ; Lindb. Sphag. 9. 

 S. Sulliv a^itianum, Austin, Am. Journ. Sci. 2 ser., xxxv. 253. 



Hab. Manchester Pond, Ocean County, New Jersey (Austin); 

 Atlantic County, etc., New Jersey (E. A. Rau). Described by Hampe 

 from specimens collected in Porto Rico. 



§ 7. Cyclophylla. Loosely cespitose: stems short, loith or 

 mostly without short simple ament-like branches : leaves 

 loosely imbricate, orbicular or ovate, broadly obtuse : ducts 

 central, oval, thick-walled : cortical cells large, in a single 

 layer. Plants generally destroyed by drought and an- 

 nually reproduced from the prothallium. 



23. S. cyclophyllum, Sulliv. & Lesq. Dia?cious ; plants 

 ament-like, soft, prostrate or erect and loosely cespitose, of a 

 whitish-glaucous color : leaves very large, round-ovate, flaccid, 

 very entire, with two rows of thin marginal cells, the utricles 

 long, flexuous, fibrillose, with minute pores along the borders ; 



