32 THE SPHAGNACEZ OR PEAT-MOSSES OF 
Group A.—CYMBIFOLIA. 
Plants robust. Branches turgid, those of the coma rounded 
and obtuse at apex, the cuticular cells fibrillose ; branch leaves im- 
bricated, very broad, cymbiform-concave, ovate or roundish, with 
an involute rounded cucullate apex. 
1. Sphagnum Portoricense, Hamper. 
Pr. II. 
Dioicous ? tall, robust, fuscescent ; the stem with 2-3 layers of 
cuticular cells. Stem leaves subquadrate-ovate, fimbriate all round 
the margin. Divergent branches subclavate-fusiform, with closely 
imbricated leaves, the cuticular cells spirally fibrillose, their trans- 
verse walls geniculate downwards. Branch leaves orbiculate-ovate, 
cucullate, squamose at back, minutely fimbriate all round the 
margin ; chlorophyllose cells triangular in section, placed between 
the hyaline on inner surface of leaf and crested with papille 
where united to them. 
Synon.—.Sph. Portoricense, Hamper, Linnea, 1852, p. 359. SULLIvaNT, Ic. 
Muse. p. 3, tab. 2 (1864). Austin, Musc. Appalach. No. 1 (1870). 
Sph. Sullivantianum, Austin, in Amer. Journ. Sci. 1863, p. 252. 
Dioicous ? in large soft tufts, pale fuscous below, pale glaucous 
green above. Stems 8~14 in. high, stout, simple or bipartite, firm, 
pale brown; cuticular cells in 2-3 layers, containing spiral fibres, 
but few pores. Stem leaves erect or deflexed, auricled, sub- 
quadrate-ovate, fringed round the entire margin; upper cells 
rhomboidal, lower elongated, all without fibres or pores. 
Ramuli 4-5 in a fascicle, 2-3 divergent, arcuato-patent, sub- 
clavate-fusiform, attenuated at base, the leaves julaceously im- 
bricated ; pendent branches more slender, lax-leaved. Cuticular 
cells spirally fibrillose, with few pores, the transverse walls geni- 
culate downward into the subjacent cells, and usually having a pore 
at the apex of the bend. : 
Leaves of the divergent branches small below, and widely 
cordate or semicircular, becoming larger above, narrowed at base, 
the median orbiculate-ovate, squamoso-scabrous at back of the 
strongly cucullate apex, very narrowly bordered; all minutely 
fimbriate throughout, the fibrils of the fringe formed by the com- 
missural walls of destroyed hyaline cells; lower hyaline cells 
elongato-rhomboidal, upper rhombic, with parallel linear papilla 
