somo'wli.'it obtuse, serrulate ; costa ceasing near tbe apes. — Wooded hill-sides,
on the ground. (Eu.)
20. Iff, d iv c i 'S i f f d l iu i i iy Bryol. Europ. Dioecious; very near the preceding,
but has a more simple ramification, obtuse turgid branchlets, and leaves
more densely imbricating ; those of the stem and branches deltoid-ovate, acuminate,
sulcate; those of the branchlets ovate-obtuse. — Sandy soil; hilly por.-
tions of Southern Ohio, Lesquereux. (Eu.)
21. Iff. £ 6 s c i i , Schwægr. Dioecious; stems prosti'ate, with a somewhat
fasciculate ramification; branches elongated, turgid, terete, obtuse, flaccid;
leaves densely imbricated, ovate from a broad auriculate base, apiculate, vci*y
concave, seiTato ; costa extending more than half-way. — On the ground, mostly
in hilly and wooded districts. — A large species, with golden yellow foliage:
docs not well associate with the four preceding species in a natui’al arrangement.
4 8. EHYNCOSTÈGIUM, Biyol. E urop.—San sp ro sM e , irregularly hranckej
more or less compressed : leaves ovate and ovate-lanceolate, unicostate or shoiidy hi-
costate ; areolation someivTiat loose, elongated-rTiomhoidal : capsule oval and inclined,
or oblong and cernuous : operculum rostrate.
22. Iff. s e r i ’M l i i t i im , Hedw. Monoecious ; leaves pale green, membranous,
lax, bifaiiously directed, spreading, ovate-lanceolate, acuminate, serrulate,
costatc beyond the middle; capsule oblong, cernuous. — On the ground, in dry
woods, forming thin strata; occasionally condensed, the branches becoming
cylindrical.
23. Iff. « I c p l a n à t i i n s , TV. P. Sch. Dioecious; stems and obtuse branches
very flat, profusely rooting underneath their whole length; leaves bright
green, shining, crowded, distichously imbricating, broadly ovate-lanceolate, serrulate,
shortly bicostate ; capsule gibbose-oblong; annulus nari’ow. (H. deprcs-
sum, James, in Proceed. Amer. Acad. 1855.)—Dry woods, in close, thin mats,
near the ground, on stones and roots of trees. — Emit rare.
24. Iff. r i i s c i f o i ' i u e , Weis. Monoecious; branches somewhat arcuate,
fasciculate, elongated, very slightly compressed ; leaves oblong-ovate, shortly
acuminate, sharply serrate, sometimes subsecund, costatc nearly to the apex ;
capsule oval, rather incui-ved ; annulus large. — Mountain rivulets : frequent. —
A rather rigid species, -with lurid green foliage of a firm texture. (Eu.)
§ 9. EAPHIDOST ÊGDjM, Bryol. Europ. — Stems prostrate, subcompressed;
ramification irregular : leaves subsecund, oblong-lanceolate, ecostate or shortly bicostate;
the margins refiexed; areolation minute, linear, fie xu o u s; the 3 - 5 cellules
at each o f the basal angles large, oblong, inflated : capsule oblong, suberect or cernuous
: operculum subulate : small species.
25. Iff. < l c m i s s u i n , Wils. Monoecious ; stems filiform, elongated, sparingly
branched ; leaves yellowish, shining, rather lax, naiTowly acuminate,
ecostate ; capsule narrowly elliptical, horizontal, cernuous. (H. Rugelianum,
Bryol. E u ro p .)—Mountainous districts. — Usually grows in thin flakes, on tho
inclined faces of moist exposed rocks : variable. When much shaded, and on
horizontal surfaces, it assumes an upright aud larger growth, and becomes II
Marylandicum and II. Carolinianum, Jl/««. Sjno;). (Eu.)
26. H. microcarpiim, G. Mull. Monoecious ; growth close and entangled;
branches short, recmwed; leawes shining, bright green or yellowish,
narrowly ohlong-lanceolate, concayc, obsoletely .short-costate ; capsule more or
less symmetrical, erect or iuclinod; cilioloe of the peristome often absent,
(Leskea adnata, Michx.) — Trunks of trees, in the Southern States.
27. H . c y l i iK l r i c î î r p u iM , Mull. Synop. (1851). Dioecious; stems
prostrate, subpinnatcly branched ; leaves narrowly lanceolate, with a long-attenuated
serrate point, bifariously imbricated, falcate-secund, ecostate; capsule
elongated-cylindrical, regular and erect, or slightly unequal and cmwod; ciliolæ
of tbe inner peristome rudimentary. (Muse. AUeghan. No. 60. Leskea tenuiros-
tris, W .P .S c /t.; Ed. 1, 1848.) — Grows in close, yellowish, shining mats on
logs, m woods, Alleghany Mountains and Central Ohio.
28. I I . r e c H r v a n s , Schwægr. Monoecious ; forms palish-green shining
mats, frmtmg abundantly ; loaves bifariously imbricating, ovate-lanceolate from
a constricted base, secund-falcate, strongly sen-ate near the point, with two faint
costæ at tho base ; capsule short-oval, horizontal-incurved. — Decayed logs, A lleghany
Mountains. Very common, and variable in size.
29. H . â l b i i l n m , C. Mull. Monoecious ; stems aud branches flat ; leaves
lax, spreading, bifarious, oblong-lanceolate, slightly serrulate aud subsecund
with two very short costæ at the base ; capsule oblong, cemuous. (H. subsim-
plex, Hbo7c. ÿ Wils.; Muse. AUeghan.)— M.oist places, on the ground and on
decayed wood.—A small Moss, with dehcate pellucid foliage, varying from
dark to pale-wliitish green ; difficult to distinguish from small forms of H. re-
cmwans : the alar cellules less distinct and inflated.
4 10. LIMNÔBIUM, Bryol. Em-op. — Main stems prostrate, irregularly branched,
ascending: leaves varying from orbicular to elongated-laneedate, shortly unicostate
or obsoletely bicostate; cellules oblong or linear: capsule turgid-ovate or oblong, cernuous
: operculum hemispherical, apiculate, or short-conic.
SO. I I . c t l g y r iM m , Bryol. Europ. (Muse. Bor.-Amer. No. 303.) Monoecious;
main-stoms leafless below, rigid; branches irregularly divided; leaves
broadly ovate-lanceolate and oblong-lanceolate, shortly acuminate, concave, more
01- less complicate and contorted, secund, subfaleate, shortly bicostate, the excavated
basal angles composed of large pellncid fulvous cellules ; capsulé oblou«-
cernuoiis-mcui-ved ; annulus very broad. (II. palustre, James, in Proceed. Acad.
Nat. Sci. 1855. Limnobium rufescens, Schimp. ¿ned) --W h ite Mountains, New
Ilampsliirc, Oakes, James. Smoky Mountains, Tennessee, liugel. — II. palustre
L ., Bryol. Europ., (common in British America, Drummond,) not yet found witliié
om- limits, has no annulus ; and the basal angles of the leaves are different. (Eu.)
31. II. ¡ n o l t c , Dickson. Monoecious; somewhat larger than the preceding;
branches thicker and more obtuse, not so divided; leaves flaccid, widely
spreading, subsecund, roundish, apiciüate, entire or crose-denticulate at th’e apex ;
capsule short, tm-gid. — Mountain rivulets, North Carolina, Curtis, LesquereuJ.