a branches 
54 MUSCI. (MOSSES.) 
Div. U. Pleurocairpi. 
Fruit lateral on the stem or branches. (Peristome mostly double.) 
Tre XXIV. FONTINALES. 
59. FONTINALIS, Dill. Fountain-Moss. (Tab. 18.) 
ra small, conic, crenate or somewhat lacerate at the base. Opercul 
conic. pene ovate, oval, or cylindrical, subsessile. Peristome double 
exterior 16 linear-lanceolate teeth coherin ir apices in pairs ; the interior 
16 cilia psa fai tien forming a more or less complete tessellated cone. 
Infi iow Mosses, floating in water, and rooting at their 
base als ; leaves irene ecostate, with a minute linear areolation; capsule 
immersed in the pe leaves, and terminal on short, lateral, supra-axillary 
branches. ae om fontinalis, a fountain, in allusion to its place of growth.) 
BF. a 8'~12' long, very much divided, flex- 
Be lg broadly ovate-acuminate, eager Eyam the margin on one side 
reflexed ; perichztial leaves oblong, obtuse, eroded at the apex, closely embra- 
eing the cea cme ; Inner ee complete raed cone. — Mountain 
rivulets, New Engla riable in size and color, (Tab, 18.) (Eu.) 
2. F. sq oo L.? peas no No. 1; ramification more fascicu- 
late ; suena conca 
Sta 
= Mo untain streams, Southern 
out rail betes a different species. (Eu.) 
3. F. rasa Sulliv. Leaves of two forms, those appearing in the 
spring large, broad, ovate-lanceolate, concave, flaccid, disappearing in the sum- 
mer, ucceeded by others much smaller, narrowly linear-lanceelate, convo- 
lute, and clothing new branches ; both kinds denticulate at the apex, their basal 
gles auriculate, and composed of large oblong pellucid cellules ; capsule oval 
aie lindrical ; apes leaves as in No 1; operculum more elongat- 
or peristome with 18-20 articulations; cilia of the inte- 
rior peristome ¢ can at their tips only by a few eross-bars, elsewhere appen- 
diculate. (F. oi, var. Muse. Alleghan., No. 191, and Pilotrichum sphagni- 
folium, Mull. Synop are the spring state of the ay F. disticha, var 
Muse. Alleghan., a 192, and ieen disticham, D/ull. l. c., are the sum- 
mer state.) — Wood rivulets, near Columbus, Ohio: New Boas. Cenn., D. 
£. Eaton. — Fruit rare ; male flowers terminal on short club-shaped branches 
4. F, distic Took. & Wils. (in Drum. S. Mosses, No. 151.) A stiff, 
elastic species, much more slender than any of the preceding ; stems reddish 5 
short and widely spreading; leaves — or rather appressed, 
Tinear-lanceolate, convolute, atten at the extreme point; capsule 
cylindrical, its length 5 times its diameter 5 se a narrowly conic, one third 
as long as the capsule; teeth of the peristome more or less cleft along the me- 
dial line between the 12-15 nieeatonNg cilia granulated and conneeted as im 
No. 3.—Rivulets near Mobile, Alab 
os FP. Lesewrii, Sulliv. na ee .-Amer., No. 228.) Near the last, 
but a soft, flaccid, and somewhat larger species; leaves broader, shorter, not 
