644 MUSCI. (MOSSES.) 



* Leaves narrow, elongated; the costa ceasing below the apex. 

 *- Inflorescence hermaphrodite. 



1. B. pyri forme, Hedw. Stems short (3" - 4' ), simple ; leaves bright, 

 shining green, spreading, linear-setaceous, subflexuous, slightly serrate at the 

 apex ; capsule pyriform, pendulous, glossy, yellowish-brown, of a thin texture ; 

 opercalum convex, mammillate ; pedicel long. Mostly on the ground in burnt 

 woods, &c. ; frequent. (Eu.) 



2. B* crudlllll, Schreb. Patches glaucous-green, somewhat loose ; stems 

 J'-2' high; lower leaves oval-lanceolate, the terminal linear-lanceolate, sub- 

 flexuous, serrated at the apex ; capsule oval-pyriform or oblong, suberect or 

 horizontal; operculum as in No. 1. White Mountains, New Hampshire, 

 Oak?* Sometimes dioecious. (Eu.) 



>- -i- Inflorescence dioecious : male flower gemmiform, terminal. 



3. B. JLescuriaiiiiiii, Sulliv. Loosely caespitose, greenish-yellow, 

 without any tinge of red ; stems 4" - 6" long, subdecumbcnt ; lower leaves ob- 

 long-lanceolate, the terminal much longer, linear, acuminate, serrate at the apex, 

 the margins reflexed at the middle ; capsule short, pyriform, pendulous, when 

 dry wide-mouthed ; annulus compound, unrolling ; operculum hemispherical, 

 apiculate ; pedicel erect from a geniculate base, 7" -8" long. (Mem. Amer. 

 Acad., n. ser. 4, p. 171.) Clay-banks, Ohio and Pennsylvania: rare. 



4. B. aillltitilllllll, Hedw. Plant considerably larger than the preced- 

 ing ; capsule oblong-pyriform, with a long, tapering, reddish neck, and con- 

 stricted under the mouth. when dry. Mountains of New England, Oakes 

 The sterile shoots have numerous axillary, deciduous, bulb-like gemmae. (Fu.) 



<-)--- Inflorescence monoecious : antheridia axillary. , 



5. B. elougatum, Dicks. Stems simple, 4" -10" high; upper leaves 

 linear-lanceolate, crowded, spreading, recurved on their lower margin, serrated 

 at the apex ; capsule inclined or horizontal, elongated, narrowly clavate, the col- 

 lum very long ; operculum subrostellate ; pedicel 1 ' - 2' long. Crevices of 

 rocks, tops of high mountains in the Southern States. Ciliolas of the inner 

 peristome often rudimentary. (Eu.) 



6. B. nutans, Schreb. Stems about 1' long; upper leaves linear-lanceo- 

 late, serrulate at the apex, the margins below recurved ; capsule pendulous, oval- 

 pyriform or elliptical, short-necked ; operculum apiculate ; ciliola} of the inner 

 peristome in twos or threes, large, appendiculate ; pedicel l'-2' high, pale above. 

 Moist sandy soil, in hilly or mountainous districts. (Eu.) 



7. B. C'lK'UlIfitlllll, Schwajgr. An alpine species, often confounded 

 with alpine forms of the last species ; its most reliable distinctive characters 

 are the larger obovate capsule, with a small operculum, and the absence of the 

 ciliola? of the inner peristome. White Mountains of New Hampshire, Gray, 

 Oakes. (Eu.) 



* * Leaves broad; costa ceasing below the apex. (Dioecious: male flower terminal.) 



8. B. 1'dseum* Schreb. Stems l'-2' long, decumbent at the base; low- 

 er leaves small, appressed, the upper very large, serrated, spatulate, apiculate, 

 forming terminal stellate clusters ; capsule pendulous, clavutc-oblong or sub- 



