On Bog Mosses. 
63 
especially noteworthy in Sph. intermedium are, the pendent 
branches quite concealing the stem ; the indistinct cortical cells, 
which scarcely differ from those of the woody layer ; the branch 
leaves undulated and more or less squarroso-recurved when dry, the 
broadly oblong, apiculate, more densely areolate perichaetial bracts, 
and the pale yellow spores. 
The indefatigable Lindberg has satisfactorily settled the nomen- 
clature of both 8;ph. cusjpidatum Ehrh. and 8]ph. intermedium 
Hoffm. from an examination of original specimens of both authors 
preserved at St. Petersburg ; Hoffmann's description is otherwise far 
too brief for correct determination, and his Yar. of intermediu7n 
is also stated by the same authority to belong to Sjph. acutifolium 
Ehrh. 
19. Sphagnum cuspidatum Ehrhart. 
Decades Crypt. No. 251 (1791). 
Plate XCIII. 
Syn. — Sphagnum pahistre, molley deflexum^ squamis capillaceis, fluitans. Dill. 
Hist. Muse. tab. 32, fig. 2, B. (1741). Sph. cuspidatum Ehrh. 1. c.— Hoffm. Deutsch. 
Fl. II. p. 22 (1796).— Smith F1. Brit. p. 1147 (1804). Eng. Bot. t. 2092 (1809). 
TuENER Muse. Hib. p. 6 (1804).— Bridel Sp. Muse. I. p. 17 (1806). Mant. Muse, 
p. 2 (1819). Bry. Univ. I. p. 14 (1826).— Weber & Mohr Bot. Taseh. p. 74 
(1807).— ScHWAGR. Supp. I. P. I. p. 16, tab. VI (1811).— Sohkuhr Deutsch. 
Moose p. 16, Tab. 7 (1810).— Rohling Deutsch. Fl. III. p. 35 (1813).— Schultz 
Supp. Fl. Stargard. p. 65 (1819).— Fl. Dan. Tab. 1712 (1821).— HiiBEN. Muse. 
Germ. p. 29 (1833).— Dozy & Molkenb. Fl. Bat. p. 79.— Berkel. Handb. Br. 
Mosses p. 307 (1863).— Lindb. Torfm. No. 1 (1862). Sph. laxifolium C. Mull. 
Synop. I. p. 97 (1849). Milde Bry. Siles. p. 385 (1869). Sph. cuspidatum Var. 7, 
Bry. Brit, Tab. IV. Sph. cuspidatum )8 submersum Schpr. Torfm. p. 61, Tab. XVI. 
fig. 1 )8 (1858). Synop. p. 676 (1860). Sph. laricinum Angstrom, Ofver. Vet. Ak. 
Forhandl. XXI, p. 197 (1864), 
Bioicous. Plants very soft, in loose submersed or floating 
tufts ; light green, deep green, or more or less tinged with yellow 
or brown. 
Stems slender, flaccid, ^ale green, 6-18 in. or sometimes several 
feet in length; cortical cells not jporose, larger, well defined, in 
2-3 strata. 
Stem leaves ovaie-ohlong, pointed, with the margins involute at 
apex, broadly bordered with very narrow cells, the hyaline cells of 
the uj)per half with numerous spiral fihres. 
Branches 3-5 in a fascicle, longer, often turned to one side and 
falcate at points ; all divergent, or 1-2 jpendent but not concealing 
the stem, those of the coma few and more lax. 
Branch leaves laxly imbricated, narrowly lanceolate, flexuose 
when dry, often somewhat falcato-secund, 3-6 toothed, and with a 
broader border of narrow cells ; chlorophyll cells free on the ^posterior 
surface, trigono-elliptic in section. 
Capsules in the capitulum, or more frequently scattered on the 
stem, the peduncles being often much elongated. Perichsetial bracts 
