MUSCI. (MOSSES.) (73) 673 
§ 12. HARPIDIUM, Sulliv. — Stems rootless, posit fastigiately ae di- 
visions long, sulgdienctely branched ; branches more or less hooked-curved ; 
Sili fliformly attenuated, ‘falcate-secund, sont costate; texture “neta 
ceous, firm; areolation minute, linear: capsule. oblong, cylindrical, erec' uous : 
pedicels long: operculum short, convex-conic : mostly marsh-species. 
40. Hl. uncinatum, H Moneecious; stems 2/-4! long, somewhat 
rigid ; leaves crowded, pe fae akeieninie from a broad base, plicate- 
striate, serrulate, costate beyond the middle; capsule cylindrical, erect-cernuous ; 
annulus broad. — Rocks - as logs, in moist places, White Mountains of 
New Hampshire, Oakes. — Forms large, loose, a yellowish-green turfs. (Eu.) 
41. Hi. revélwens, Swartz. Moncecious ; distinguished from the pre- 
ceeding by its oar dark purple, larger, more ae leaves, when dry rather tor- 
tuous, not plicate, wit! ad a shorter costa; and by its somewhat incuryed oblong 
capsule. and bogs, Northern Ohio: (Eu.). — 
42. WE. ae L. Moneecious ; stems longer ong the last two ~4 
cies; stem-leaves elongated-lanceolate, remote, flaccid, often not fal 
costate nearly to the point; capsule turgid-oblong, iowa: horizontal, 2 a 
distinct erect collum ; annulus absent. —- Swamps and stagnant water. — Color 
usually dark green. (Eu.) 
43. Hi. adancum, Hedw. Dicecious; typical form slenderer than in 
cate; leaves shorter, with a looser areolation. — Limestone springs, Penn., Les- 
quereux. — Var. ? GIGANTEUM, Bryol. Europ. ‘Ethans Pond,” Wily ‘Maan. 
tain, New Hampshire, James. St. Paul, Minnesota, (Eu.) 
§ 13. CRATONEURON, Seige — Stems prostrate or ascending, villous and 
ir : 
Ly interruptedly e: 
lanceolate-attenuated from a pagan base, spreading or falcate-secund ; areolation 
dense, oblong ; costa stout, subcontinuous : capsule cylindrical, cernuous : operculum 
short-conic. — Mostly in wet places, on calcareous soil. 
44. WI. filicimum, L. Dicecious; leaves evenly concave; annulus sim- 
ple.— Wet places, on dripping rocks, Ohio.—H. commutatum, Hedw., a 
closely related species found in Briti re America, is a somewhat larger plant ; 
having the leaves softer, Tab Af nah and more falcate, with a 
shorter costa, and a large compound annul (Eu.) 
§ 14. PTILIUM, Sulliv.— Stems erect, ca rigid, rootless, villous, simple or 
dichotomous, one or two short innovations, densely cristate-pinnate, frondlike: 
leaves ovate-lanceolate, attenuated, circinnate-secund, obsoletely bicostate, suleate ; 
areolation minute, linear: capsule cylindrical, i incurved-horizontal : operculum. con- 
vex-conie: pedicels long. 
45. H. Crista-Castrénsis, L. Diccious; leaves _ 
ones, a ee nee ene ees a striking, showy 
species, Pp spongy beds, many rods in extent. (Eu.) 
is o 
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