038 musci. (mosses.) 



(Name from koukivov, a sieve, and 68u>v, a tooth, in allusion to the perforated 

 teeth of the peristome.) 



1. C Wrifjlltil, Sulliv. Monoecious; tufts compact, hoary ; stems 3''- 

 4" high, clavate ; leaves closely imbricating (the lower smaller, oval, the upper 

 larger, obovatc), very concave, serrate above, suddenly produced into a long 

 hyaline denticulate hair-point, costate half-way ; areolae at the base oblong, 

 those near the apex oval, both pellucid, the central ones roundish and chloro- 

 phyllose ; capsule oblong-oval, truncate at the base, on a very short curved 

 pedicel; operculum conic-acute; annulus large, compound. — Rocks, near San 

 Marcos, Texas, Wright. — C. pulvinatus, its only congener, has a straight and 

 longer pedicel, obovate capsule, lanceolate leaves, and is dioecious. (Tab. 18.) 



39. RACOMITRIUM, Br. & Sch. (Tab. 16.) 



Calyptra conic-mitriform, subulatcly rostrate, solid and papillose at the apex, 

 membranous and multind at the base. Operculum conic, with a short or long 

 subulate rostrum. Capsule elliptical, nearly cylindrical or ovate-oblong, erect, 

 smooth, long-pedicellate. Peristome single: teeth 16, 2-3-fid, the segments 

 free or somewhat cohering. Inflorescence dioecious. — Tall, striking species, the 

 largest among the Grimmioid Mosses ; stems dichotomously or irregularly 

 branched ; leaves oblong-lanceolate, with or without a diaphanous hair-point, 

 costate-carinate ; areolae above mostly quadrate, below enlarged, linear, with a 

 sinuous outline. (Name from pdicos, a shred, and jxirpiov, a veil, referring to the 

 lacerate base of the calyptra. ) 



§ 1. DRYPTODON, Br. & Sch. — Ramification dichotomous ; the innovations 



simple, fastigiate. 



1. R. aciculare, Brid. Loosely csespitose, dull green; stems procum- 

 bent and leafless below, ascending, l'-3' long; leaves crowded, spreading every 

 way or secund, ovate-oblong, the costa vanishing below the toothed or entire 

 obtuse point ; capsule elliptic-oblong, its mouth small ; teeth of peristome deep- 

 ly 2-3-fid; operculum long, subulate-rostrate. — On wet rocks, Allegheny 

 Mountains. (Eu.) 



2. R. Sudeticum, Br. & Sch. Patches loose, grayish or lurid ; stems 

 as in the last; leaves from an erect base, spreading, recurved or incurved, linear- 

 lanceolate, with a rather short denticulate pellucid hair-point; capsule small, 

 oval or elliptic-oblong on a short erect or curved pedicel ; operculum shortly 

 rostrate. —Exposed rocks, Alleghany Mountains. (Eu.) 



§ 2. RACOMITRIUM Proper. — Ramification irregular; branches ramulose; 



the innovations not fastigiate. 



3. R. fasciculare, Brid. Patches loose, of a light green color ; stems 

 l'-2' long, assurgent. branched; branches with numerous fasciculate short 

 branchlets; leaves crowded, spreading, linear-lanceolate, tapering, without a 

 pellucid hair-point, margins reflexed, the areolae above and below elongated and 

 sinuous ; capsule elliptical ; rostrum of the calyptra strongly papillose its whole 

 leno-th : teeth of the peristome bifid to the base, slender, nodulose. — Moist rocks, 

 Alleghany Mountains. (Tab. 16.) (Eu.) 



