308 
beyond the middle of the perianth, ovate, irregularly lobed and 
ciliate in the upper part; perianth ovate-fusiform, composed 
of a single layer of cells, strongly curved postically in the 
upper part, deeply 3-carinate with obtuse grooves and keels, 
the mouth strongly contracted and plicate, ciliate; ripe capsule 
and andreecia not found. 
Stems 0.5-1 cm. long, 0.09-0.12 mm. in diameter; leaves 
about 0.3 mm. long and 0.2 mm. wide; leaf-cells rectangular or 
quadrate, with thickened walls, mostly between 0.025 and 0.028 
mm. long and between 0.014 and 0.016 mm. wide; under leaves 
of the stem 0.09-0.12 mm. long, and 0.14—0.16 mm. wide; inner 
perichetial bracts 2.5 mm. long and 1 mm. wide; perianth about 
4 mm. long and I mm. wide. 
Hab.—Among Sphagna in a bog. often accompanied by 
Mylia anomala (Hook.) S. F. Gray ; Lebanon Swamp, Bethany, 
Connecticut (A. W. E., 1892). 
Lepidozia sphagnicola belongs to Dr. Spruce’s sub-genus Micro-' 
Lepidozia, of which our only other Northern representative is L. 
setacea (Web.) Mitt. It differs from this species, which it somewhat 
resembles at first sight, in its larger size, in its deeply four-parted 
leaves, whose lobes are often 3 or 4 cells wide at base, in its 4- 
parted stem-underleaves, in its much larger perichaetial bracts, 
which are not deeply laciniate, and in its long, strongly carinate 
perianth with contracted mouth. 
The species of Lepidozia occurring in the United States may be — 
recognized from their leaves as follows: 
Leaf-segments extending to about the middle. Z. reptans (L.) Dum. 
Leaf-segments extending to near the base. 
Segments 4, 2-4 cells wide at base, basal membrane about 2 cells high. L. 
sphagnicola, n. sp. 
Segments mostly 3, 2 cells wide at base, basal membrane 2-5 cells high, “L 
setacea (Web.) Mitt. 
Segments 2 or 3, 2 cells wide at base, basal membrane less than one cell high. 
L. chetophylla, Spruce, var. tenuis, Pears.* 
JUNGERMANNIA NovaE-CasarEx, n. sp. Dioicous, pale green, 
~ varying to dark green or yellowish, growing in loose tufts OF 
scattered about the bases of bog-plants; stems prostrate, 
simple or rarely dichotomous, bearing scattered, whitish radicles 
PEE e ee 
*Hepaticee Natalenses, Christ. Videnskabs-Selskabs Forhandl. 1886, No. 3 P- 7? 7 
tab. v. ( fungermannia nematodes, Gottsche in Wright’s Hep. Cubenses ; Cephalosia 
nematodes, Aust.in Bull. Torr. Bot. Club. vol. vi. p. 302; Lepidosta nematodes, ce 
Spruce, Hep. Amaz. et And. p. 366, not ZL. memoides, Tayl. Syn. Hep. p- 717): 
