Cylindrothecium.] BRYACE^. 311 



narrow areolation quadrate at the basal angles. Calyptra 

 cucullate and dimidiate. Capsule long-pedicellate, erect, cylin- 

 drical. Operculum conical or obliquely sliort-rostrate. Peri- 

 stome small ; teeth free to below the orifice of the capsule, 

 linear, distantly articulate ; segments narrow, carinate, attached 

 to a narrow membrane or entirely free; cilia none. Spores 

 greenish brown, minute. 



1. 0. cladorrhizans, Schimp. Plants in wide yellowish 



green tufts : leaves closely imbricate, oblong-ovate, acute, very 



slightly serrulate at the apex, concave, indistinctly bicostate at 



base : lid long, conical, blunt at the apex ; teeth entire, dark 



brown at base, more or less lacunose above; segments linear, 



pale, entire; annulus large, easily detached. — Syn. 514; Sulliv. 



Mosses of U. States, 64, t. 5, and Icon. Muse. 143, t. 91. 



Neckera cladorrhizans^ Hedw. Spec. Muse. 207, t. 47. C. 



Schleicheri, Bruch & Schimp. Bryol. Eur. t. 464. 



Hai3. In woods on decayed logs, roots of trees and the ground; very 

 common. 



2. O. seductrix, Sulliv. Very near the preceding, distin- 

 guished by the darker color of the stems, the smaller terete and 

 more slender branchlets, the leaves sulcate, more concave and 

 shorter-apiculate, the capsules more numerous and narrower, 

 tlie deeper insertion of the shorter loosely articulate teeth, and 

 the less perfect persistent annulus. — Mosses of U. States, 64, 

 and Icon. Muse. 145, t. 92. Neckera seductrix., Hedw. Spec. 

 Muse. 208, t. 47. Pterigynandrum Carolinianuni., Brid. Muse. 

 Recent. Suppl. i. 132. C. Muhlenhergii, Bruch & Schimp. 

 Bryol. Eur. Cylindrothecii<m, 4. 



Hab, On logs in moist shaded places; fruiting more copiously than 

 the last species ; common, 



3. 0. brevisetum, Bruch & Schimp. 1. c. Facies and mode 

 of growth of C. cladorrhizans ; branches, branchlets and leaves 

 less compressed : leaves erect, open, concave, lanceolate, gradu- 

 ally narrowly acuminate, with borders recurved in the lower 

 part; areolation looser: capsule enlarged toward the base or 

 oval-cylindrical ; operculum conical, obtuse ; pedicel short, pale 

 yellow ; teeth hyaline-margined by the adhering segments ; 

 annulus very large: spores large. — Sulliv. Mosses of U. States, 

 65, and Icon. Muse. 150, t. 96. Neckera breviseta^ Hook. & 



