626 (26) MUSCI. (MOSSES.) 
Trisz VI. TRICHOSTOMER. 
19. TRICHOSTOMUM, Br. & Sch. (Tab. L) 
tra cuculliform. Operculum conic-rostrate. Capsule oval or cylindri- 
cal, mostly erect, long- oan gen Peristome fees teeth 32, linear, approxi- 
mate in pairs. florescence various.— Plants growing on the ground or on 
stones, of a rather rigid habit; stems simple or dichotomously divided ; leaves 
varying from lanceolate to lanceolate-subulate, costate to or beyond the apex ; 
areolation loose below, dense and roundish above. (Name from @pié, a hair, 
and srdpa, a mouth, in allusion to the capillary teeth of the peristome.) 
T. tértile, Schrad. Stems mostly simple, 3/!- 5! high; leaves lance- 
reared we sya oipcyreses reflexed on the eras i costa excur- 
US 5 
shite. flower terminal. i: Road aides: clay-baiiks : Frequenit. (Tab. i) (Eu.) 
2. 'T. témue, Hedw. Distinguished from small forms of the last, which 
it much ficient mainly by its large double annulus, firmer and brownish-red 
capsule, and the plane (not reflexed) margin of the leaf. — Pennsylvania, accord- 
in, ig. (Eu.) 
Sulliv. Stems vite 10” high, slender; stem-lea 
ial s 
oval-oblong ; 
double, very large, its width equal to half the le length of the teeth; pedicel slen- 
der, flexuous ; operculum elongated-conic, obtuse; eee as in No. 1.— 
Sides of ditches and roads, Pennsylvania and New England. 
4. 'T. pallidum, Hedw. Stems short, 3!-4" high; leaves long-seta- 
$ from a lanceolate base ; costa broad, excurrent denticalate at the apex; 
capsule oblong-elliptic. — Clayey grounds; frequent. — Conspicuous by its nu- 
merous, Sen (1}/-2! high) straw-colored pedicels; moncecious; male flower 
, in the axils of the upper leaves. (Eu.) 
& mere \eortmrner pie Hedw. Stems densely cspitose, 6-10! high, 
pease a — — —— re mote, be ope ate; the upper larger, 
apex, the plane 
margins denticulate above; — rior ere ert den mgated-conic. 
Shores of Lake Superior, Agassiz.— Remarkable for the glaucous hue of its 
foliage. (Eu.) 
20. BARBULA, Hedw. (Tab. L) 
Calyptra cuculliform. Operculum subulate-conic. Capsule oy. al-oblong or 
cylindrical , Tae tecibadinns, Peristome single: teeth 32, sap long, filiform, 
contorted, connected at the base by a short or long tubular membrane. fl 
peristome. (Name a diminutive of barba, beard, in allusion to the cap’ 
me.) 
