MUSCI. (MOSSES.) 
653 
Inflorescence various. (Name formed of 0pl£, hair , and <rropa, 
mouth; from the capillary teeth of the peristome.) 
1. X. pallidum, Hedvv. Stems short; leaves setaceous from 
a lanceolate base , nerve excurrent, denticulate at the apex; capsule 
oblong, erect or very slightly curved; annulus simple; pedicel 2'-3' 
long, slender, flexuous; lid conic, short-beaked. — Clayey grounds, fre¬ 
quent. Conspicuous by its straw-colored pedicels which give color to 
the whole mass. Monoecious: sterile fl. gemmiform, in the axils of 
the upper leaves. 
2. X# tortile, Schrad. Leaves spreading lance-awl-shaped , 
channelled, denticulate at the apex of the excurrent nerve; capsule 
erect, oblong-elliptical; teeth of the peristome somewhat oblique, with , 
their basal membrane emergent; annulus simple. — Road-sides, clay 
banks, &c., frequent, 7"-10" high, dioecious : sterile fl. terminal. 
3. X. vaginalis, Sulliv. Leaves erect , oppressed , ovate-lance¬ 
olate i perich. leaves sheathing, suddenly attenuated, spreading at the 
apex, the strong nerve excurrent; capsule oval-oblong; teeth of the 
peristome short, erect, anastomosing in pairs; annulus double, very 
large, its width equal to half the length of the teeth ; pedicel slender, 
flexuous; lid elongated-conic, obtuse. — Sides of ditches and roads, 
Penn, to New England. Plant 10"-15" in height; branched by slen¬ 
der and erect innovations. Inflorescence same as in the last. 
AlLeghan. No. 176.) 
21. BARBULA, Hedwig. Barbula. 
Calyptra cuculliform. Capsule terminal. Peristome of 32 fili¬ 
form spirally-twisted teeth. Lid elongated-conic. Inflorescence 
various. (Name a diminutive of barba , beard, from the capillary 
peristome.) 
1. B. unguicnlata, Hedw. Stems elongated, fork-branch¬ 
ed ; leaves erect-spreading , oblong-lanceolate , obtuse , pointed by the ex- 
_j..j. . » nn cn1a /ivlindrinal. erect Or 
sule, and red lid. 
„ « _i^i: n Ttr.irh & Schimper. 
Stems short; 
55* 
