654 (54) MUSCI. (MOSSES.) 
Drv. I. Pleurocarpi. 
Fruit lateral on the stem or branches. (Peristome mostly double.) 
Tre XXIV. FONTINALES. 
59. FONTINALIS, Dill. Founrarn-Moss. (Tab. IV.) 
~ Calyptra small, conic, crenate or somewhat lacerate at the base. Operculum 
conic. Capsule ovate, oval, or cylindrical, subsessile. Seka double ; the 
exterior 16 linear-lanceolat ak cherng at their me in Ries bese — 
16 cilia connected by cross-bars, formin 
Inflorescence dicecious. — Large Mosses, floating in water, and rooting at their 
base only ; leaves s.ranked, ecostate, with a minute linear areolation ; capsule 
immersed in the perichzetial leaves, oa terminal on short, lateral, supra- 
branches. (Name from fontinalis, a fountain, in allusion to its place of growth.) 
tipyrética, L. Stems 8/-12/ long, very much divided, flex 
ile ; leaves broadly ovate-acuminate, complicate-carinate, the margin on one side 
reflexed ; ee leaves wien obtuse, eroded at the sei closely embra- 
cing the oval capsule; inner complete tessellated cone. — Mountain 
rivulets, New England. ao Wanaanie § in size and color. (Tab. Iv) (Eu.) 
2. FE. squamosa, L.? Smaller than No. 1; ramification more fascicu- 
late; leaves concave, not complicate-carinate es Mon tain streams, Southern 
States : without fruit.— Perhaps a different species, (Ku.) 
3. EF. biférmiis, Sulliv. Leaves of two forms, those appearing in the 
i ov: i 
lute, and clothing new branches; both kinds denticulate at the apex, their basal 
ye — pe composed of large oblong pellucid cellules ; capsule oval 
; perichetial leaves as in No. 1; operculum more é! ae 
as teeth of the wibinieie peristome with 18-20 articulations; cilia of the inte- 
rior saa igs connected at their tips only by a few cross-bars, elsewhere ott 
phagni- 
than any of the preceding ; stems reddish ; 
as long as the capsule ; er of the peristome more or less cleft along the me- 
dial line between the 12-15 articulations ; cilia granulated and connected as in 
No. 3.— Rivulets near sry Alabama. 
. EF. Lesettrii, Sulliv.. (Muse. Bor.-Amer., No. 228.) Near the last, 
but a soft, flaccid, and somewhat larger species ; leaves broader, shorter, not 
