52 MUSCI. (MOSSES.) 
short-pointed from a convex base, and deciduous with the columella attached ; 
ealyptra small, mitriform, 4—5-lobed at the base. —(P. spharicum, Muse. 
ghan., No. 196.) Banks of the Ohio River subject.to inundation.— A minute 
nual: length of the whole plant 2”-3'. (Tab. 18.) 
3. P. tetragonum, Br. & Sch. Stems gregarious, scareely 1! high; 
leaves connivent, RS eSB acuminate, the costa ceasing at the apex or 
exeurrent; capsule globose-pyriform, on an erect pedicel (1” high), wide- 
mouthed when > sapeiitabiads convex, apiculate ; calyptra very _— twice as 
long as the ea fusiform, 4-sided, splitting on one side.— On the ground, 
San Marcos, Texas, Wright: Vincennes, Indiana, Lesquereux. (Eu.) 
56. APHANORHEGMA, Sulliv. (Tab. 18.) 
Calyptra small, campanulate-mitriform, lobed at the base. Operculum hemi- 
spherical, apiculate. Capsule immersed (ineluding the oe eeaaemely papier 
nearly — exannulate. Peristome none. Inflorescence moncecious or her- 
maphrodite: paraphyses globosely distended at ete shied — A genus, ~ its 
feeble deisoene, iis ne and the characters of vegetation, forming a0 
intermediate lin een Physcomitrella among Cleistocarpous, and Phys- 
comitrium among i. Mosses. (Name from apavys, unapparent, 
and piyypa, rupture, or suture; i. e. dehiscence obscure 
1. Ae serrata, Sulliv. Stems 2”-3” high, simple or-innovating from 
below the apex ; leaves oblong-lanceolate, serrate, costate nearly to the point of 
a loose hexagonal areolation ; sel (when mature) separating nese 
pressure along an diced oe snture (not visible at an early stage) in 
two equal portions ; — cacuaually ae with a few eles 
in the axils of the peri kaye es, usnally naked, sometimes with 1 or 2 
small perigonial leaves. ea. in Mem. Amer. Acad., n. ser. 4, p. 60, t. 2.) — 
Damp soil, New ssn to pine — Strikingly like jes aie patens 5 
distinguished y by its feeble are: and the denser texture of the 
outer wall of ip insite (Tab. 18.) 
Trize XXII SPLACHNER. 
57. SPLACHNUM, L.,Br.& Sch. Umereiia-Moss. (Tab. 18.) 
Calyptra small, conic, entire or uneven at ¢ : operculum convex OT 
nized pare ‘he esctiy pene spophysi of ns capsule ; perennial, csespitose, 
growing on) animals; stems innovating from below 
the floral ic: iActineons, of a succulent soft texture ; leaves lanceolate, 
taper-pointed, thin and delicate, with large loose, oblong, hexagonal areola 5 
costa slight, Bis ga (3mAayyvov, a name used by Dioscorides 
for some eryptogamous 
