677 
MU SCI. (MOSSES.) 
naked below, with the branches clustered above ; leaves crowded, 
erect-spreading, ovate-lanceolate, concave, plaited, the upper half 
denticulate, nerved to near the apex; capsule erect, cylindrical.— 
Woods and banks, on the ground, &c. 
Fontinaleae. 
49* FOKTINALIS, L. Fountain-Moss. 
Calyptra mitriform, somewhat lacerate at the base. Capsule 
lateral, sessile, immersed. Peristome double ; the exterior of 16 
linear-lanceolate teeth; the interior a conical tessellated membrane. 
Lid conic, pointed. Inflorescence dioecious: sterile fl. axillary, 
gemmiform. (A Latin name, indicating the place of growth, 
namely, in fountains and rivulets.) 
L F. antipyretica, L. Stems floating, elongated, flexible, 
vaguely branched; leaves ^-ranked , broadly ovate , pointed , nerveless, 
entire, infolded-keeled; capsule ovate , or oval , immersed in the broad 
obtuse and closely imbricated perich. leaves.—Common northward, 
New England. Stems 8* to 12' long. 
2- F. squamosa, L. Rather smaller than No. 1; the leaves 
elongated-lanceolate, concave , not infolded-keeled; antheridia larger. 
New England. 
3* F. disticha, Hook. & Wilson. Stems rigid, rather pinnate- 
ly branched ; leaves imbricated in 3 ranks, lanceolate , concave , nerve¬ 
less ; capsule oblong-cylindrical. — Woodland brooks, Ohio. 
50. DICHELYMA, Myrin. Brook-Moss. 
Calyptra cuculliform, entire at base. Capsule lateral, pedicel- 
led, emergent or immersed. Peristome double ; the exterior of 
16 linear teeth ; the interior of 16 free cilia, or as in Fontinalis. 
Lid conic, short-beaked. Inflorescence and aspect as in the last. 
(Name formed of to halve , e\vpa, a covering; from the one¬ 
sided calyptra.) 
L I>, capHlaceum, Myrin. Stems elongated, sparingly 
ranched; branches squarrose; leaves awl-shaped by the long excur- 
T cnt nerve from an ovate base , one-sided; capsule oval and, together 
w »th its pedicel, shorter than the perichaeth. — Penn., in rivulets. 
*** Fruit of the following Mosses entirely unknown. 
L Fcucdplianes I Leanuisi, Sulliv. Stems compactly 
tufled, fastigiately branched, the branches terminated by dense heads 
°f* minute oblong bodies (probably abortive leaves); leaves linear- 
awl-shaped, convolute, nerveless, rather one-sided, shining, whitish- 
57* 
