696 (96) HEPATICH. (LIVERWORTS.) 
oblique, in rounded-obovate, entire or denticulate ; perianth terminal. — 
rows with No. Eu.) 
Amphigastria fugacious, 2-3-cleft. 
3. Ps porelloides, ean Stems het * in aie wee 
ing ; 
the summit of the stem ececaeees: the others entire ; ‘perianth oblong, 
the mouth denticulate. — Among Mosses, at the base of trees in swamps. 
acréstoma, Sulliv. Stems prostrate, rooting copiously, 
eee? poeninhs not ascending ; ‘waving nearly oval, horizontal, entire or 
si repand ; perianth broadly obconic, the mouth compressed, margin re- 
d; amphigastria lanceolate, 2-3-cleft.— Moist banks and decayed logs, 
Ohio. (Tab. VIII.) 
5. P. Ludoviciana, Sulliv. Main branches sap flexuons, spar- 
ingly ramulose ; — pe divergent, semi-ovate, 2—3-dentate at the apex, 
their ventra and forming two deasrag crest- at lines on the 
under side of the s stem, ibs dorsal margins reflexed and entire, the pare spinu- 
lose-dentate ; amphigastria deeply 2-3-cleft, re segments ciliate-dentate. — 
Bark of trees, Louisiana. 
. P. undata, Sulliv. Resembles the last; but is more rigid, with sim- 
2 branches jambs horizontal, Seer baie payee: or sparing- 
, the dorsal he ventral repand- 
parce and’ acane crest-like lines a: as in No. 4; amphigastria 2-cleft, the seg- 
ments dentate. — Shaded rocky banks of the Savannah River, Georgia. 
27. SARCOSCYPHUS, Corda. (Tab. VIL) 
Fructification terminal. oe leaves united nearly to the top into an 
pblong tube. Perianth 4-6-toothed, connate (except the teeth) with the inte- 
ce of the imal leaves. Calyptra membranaceous. Capsule glo- 
bose. laters with two spi bres. -Antheridia in the saccate base of perigo- 
nial leaves. Stems erect, producing from their base runner-like rootlets. Stem- 
leaves 2-lobed. Amphigastria none. (Name composed of odpé, flesh, and 
oxvdos, a cup; from the fleshy tubular involucre.) 
1. S. Ehrharti, Corda. Leaves erect-spreading, rather quadrate, em- 
bracing the stem by the broad base; lobes obtuse. — On mountains, — Plant of 
a firm texture, dark green or brownish-purple. (Tab. VIL) 
28. GYMNOMEITRIUM, Corda. (Tab. VIL) 
Fructification terminal. Involucral leaves 2-4, convolute,emarginate. Peri- 
anth none. Calyptra short. Capsule globose. Elaters with two spiral fibres. 
Antheridia obovate, axillary. Stem-leaves 2-lobed. Amphigastria none. 
(Name from yupvos, naked, and pirprov, a little cap ; the calyptra not covered by 
a sas 
1. G. € innatum, Corda. Stems erect, filiform, mare Pi | 
branched ; ceria thickened at the apex, obtuse; leaves den cated, 
ovate, with a narrow membranaceous margin. — Alpine pe so a , White 
