musci. (mosses.) 627 



# Teeth of the peristome arising from a short basilar membrane. 



1. B. ungtliCClI:&ta, Hedw. Stems J'- 1' high, branched ; leaves orect- 

 patent, oblong-lanceolate, rather obtuse, shortly cuspidate by the excurreut costa, 

 revolute on the margins ; capsule cylindrical, erect ; annulus none : dioecious ; 

 male flower terminal. — Clayey soil, &c. ; frequent. (Tab. 15.) (Eu.) 



2. B. caespitdsa, Scbwsegr. Stems short, condensed ; leaves crowded, 

 linear-oblong, shortly acuminate, cuspidate by the slightly excurrcnt costa, un- 

 dulate on the margins ; capsule cylindrical, erect or subarcuate ; annulus none : 

 monoecious ; male flower axillary. — Woods, about the roots of trees. — Readily 

 known by its pale-green foliage, and yellow capsule with a red operculum. (Eu.) 



3. B. convolllta, Hedw. Stems short, crowded ; leaves spreading, ob- 

 long-lanceolate, rather obtuse, the margins plane ; costa ceasing at or below the 

 apex; perichaetial leaves oblong, almost truncate, convolute, the upper ones 

 ecostate; capsule cylindrical, oblique; annulus distinct; pedicel (1' high) yel- 

 low; inflorescence dioecious. — Eaccoon Mts., Alabama, Lesquereux. (Eu.) 



4. B. tortuosa, Web. & Mohr. Stems l'-3' high, dichotomously 

 branched ; leaves very long, linear-lanceolate, spreading, flexuosc, undulated on 

 the margins, crisped when dry, costa slightly cxcurrent; capsule cylindrical, 

 inclined: dioecious. — On rocks, Alleghany Mountains. — One of the largest 

 species of the genus. (Eu.) 



5. B. squarrosa, Notaris. Stems loosely csespitose, l'-2' long, branched ; 

 leaves long, from a broad sheathing base, squarrose-recurved, narrowly lanceo- 

 late, denticulate above, undulate, crisped when dry, longer and crowded at the 

 apex of the stem, the margins below diaphanous; costa slightly cxcurrent. 

 (Capsule cylindrical, slightly inclined ; annulus simple : dioecious. Bnjol. Eur.) 

 — On trees, in a cedar swamp, a quarter of a mile south of Lebanon, Wilson 

 County, Tennessee, Robinson, 1842. Without fruit. (Eu.) 



* # Teeth of (he peristome arising from a long tubular and tessellated membrane. 



6. B. mucroiiifolia, Br. & Seh. Stems short and thick ; leaves con- 

 densed, oblong or obovate-oblong, mucronate by the cxcurrent costa ; capsule 

 cylindrical, regular or slightly curved ; annulus double ; operculum rather short : 

 inflorescence as in No. 2. — Rocky banks of streams, &c. ; frequent. (Eu.) 



7. B. ruraliS, Hedw. Stems l'-3' high, branched, loose; leaves squar- 

 rose-recurved, oblong or obovate, very obtuse, concave-carinate, reflexed on the 

 margins; costa cxcurrent into a long, spinulose-dentate, white, capillary point; 

 capsule subcylindrical, erect or slightly arcuate, annulate : dioecious. — On rocks, 

 Nahant, Massachusetts* D. Murray: Texas, Wright. (Eu.) 



* -* * Inflorescence and fruit unknown. 



8. B. papillosa, Wils. Stems short (3" -4" high), thick, crowded; 

 leaves close, recurved-spreading, oblong-spatulate, very concave above, shortly 

 hair-pointed, papillose on the back ; areola? rather large, quadrate, granulose, 

 those at the base larger, oblong, pellucid ; costa pcrcurrent, hearing crowded 

 slightly pedicellate gemma? on its papillose upper surface, each composed of 2 

 to 5 clustered roundish green cellules. — (Pottia Russellii, Sulliv. mss., 1848.) — 

 Trunks of Elm trees, Mass., J. L. Russell, 1843; common. — Until lately con- 

 sidered a gemmiparous state of the last species. (Eu.) 



