92 HEPATICE. (LIVERWORTS.) 
21. PLEURANTHE, Tayl. (Tab. 21,).) 
Fructification lateral. Involucral leaves 3, minute, scale-like, 2--3-cleft. 
Perianth elongated-fusiform, arising from the lower side of the stem, fleshy, 
i pressed 
at its apex. Casa le oval; Blaters with 2 spiral fibres. Antheridia un absent 
- Leaves 2-lobed or emarginate. Svcs lanceolate, entire. (Name from 
meupa, the side, and dvOds, a flower; the perianth being lateral. - 
. vace ayl. Grows in close olive-green m 
ing, 2-3! long, mostly rage rooting profusely; leaves aes ong, u 
wardly secund; pedicel 4”—5" high: a small species, the perianth dispropor- 
tionately large. — North America, Drummond. 
22. LOPHOCOLEA, Nees. (Tab. 21.) 
Fructification terminal on the main stem or primary branches. Involucral 
leaves 2-4, large. Perianth tubular below, acutely 3-angular above, 3-lobed ; 
the lobes Sienna ons alyptra short, membranaceous, circumcissile at the 
base, or rupturing irregularly at the apex. Capsule oblong. LElaters with 
two soiral fi sin: Antheridia in the saccate bases of perigonial leaves. Stem- 
leaves decurrent on the dersal side of the stem, flaccid, 2-several-cleft at the 
apex. Amphigastria 2-4-divided ; the divisions more or less incised. (Name 
composed of Adqos, a crest, and coikaily a sheath; from the crested calyptra.) 
1. L. bidentata, Nees. Stems (1/-2! long) prostrate, sparsely branched ; 
leaves pale green, ovate-triangular, spreading, 2-toothed at the apex ; the teeth 
erat acute, with a crescent-like sinus; amphigastria minute, about 4-cleft, 
tire. — Moist places, among Mosses. (Eu.) 
heterophylla, Nees. Stems much branched, ascending; leaves 
ovate, subquadrate, a pa entire, retuse, and bidentate on the same stem; 
amphigastria large, 2-cleft, the segments slightly dentate. — On decayed logs, 
and among Mosses. (Tab, 21.) (Eu.) 
23. SPHAGNECETIS, Nees. Peat Scate-Moss. (Tab. 22.) 
Fructification terminal, upon a short proper branch arising from the ventral 
Side of the stem. Invelucral leaves small, few, i incised, Perianth ascending, 
aceous. 
antheridia in the axil of the minute perigonial leaves of pendent proper branches. 
Stem leaves orbicular. Gemme collected in heads upon the attenuated tips of 
the branches. Amphigastria none, except upon the gemmiferous branches. 
Stems furnished with ranner-like rootlets. (Name composed of 2payvos, Peat- 
Moss, and xouris, a little bed; from its place of growth.) 
1. S. commiunis, Nees. Stems creeping ; leaves ag SH 
entire, ascending. (Jungermannia Sphagni of authors.) — de 
_cayed wood. (Tab. 22) (En.) 
