360 



MUSCI. r.ruchia. 



and much larger, lanceolate-subulate, with excurrent costa ; areolation rectangular 



below, narrower above : inflorescence monoecious, the male flowers terminal upon 



special branches, with open perigonium : capsule exscrteil, ovate with a largo solid 



collum, beaked : calyptra niitriform, lobed or lacerate at base. 



Five species are found in the Atlantic States, two in Euiope, and several others in Soutli 

 America and Soutlnin Aliiea. 



1. B. Bolanderi, Lesij. Stems clustered, simple, scarcely a line long: leaves 

 pale green, erect-si)i-eading, shortly subulate above the lanceolate base, the costa 

 ceasing at the obscurely serrulate apex ; pericluetial leaves broader, nearly tubular, 

 the outer shortly acuminate, the inner lanceolate-subulate, erect, twice or tlirico 

 longer than the cauline ; inner perigonial leaves brownish, ovate-lanceolate, acute, 

 obsoletely nerved : calyptra lobeil at base : capsule erect or nearly so upon a stout 

 pedicel 2 to 4 lines long, greenish, narrowly oblong with a straight i)ale beak, upon 

 an elongated pale green collum. — ]\Iem. Calif. Acad. i. 5; Sulliv. Icon. i\Iusc. 

 Suppl 23, t. U. 



Near the Mariposa Grove and at Westfall's Meadow, Bolandcr. ResembHng the European B. 

 Vogesiaca, Schwaegr. 



6. GYMNOSTOMUM, Hedw. 



Low slender cespitose perennials, on rocks ; stems 2 - 3-dichotoraous. Leaves in 

 several ranks, lanceolate to linear, witli prominent costa and minute quadrate areo- 

 lation, larger and hyaline at base. Inflorescence monoecious or dioecious, the male 

 terminal and buddike. Calyptra cucullate, deeply cleft, long-beaked. Capsule 

 erect upon a rather long pedicel, elliptic-ovate or subgln.bose, with long-beaked oper- 

 culum, annulate (our species), but without peristome. 



Three s])ecies are European and North American, witli single species in South America and Africa. 

 Differing from Weissia only in the want of a peristome, and referred to it by Mueller and Mitten. 



1. G. calcareum, Xees & Homsch. Very densely cespitose, 2 to 10 lines high, 

 bright green above, ferruginous below : leaves erect-spreading, linear or linear-lanceo- 

 late, somewhat obtuse, minutely serrulate : calyptra very narrow : cajjsule oblong 

 upon a pale straw-colored pedicel, subcylindrical when emi)ty, pale brownish with 

 a red orifice ; operculum conic with acute or subulate beak ; annuliis persistent. — 

 Eryol, Germ. 153, t. 10; Bruch i^ Schimp. Bryol. Eur. t. 32. 



Var. perpusillum, Sulliv. Very siuall, with erect ovate-lanceolate crenulate 

 leaves, and oval-pyriform capsule. — Tacif. W. Kep. iv. 18o. 



On clayey soil. near San Francisco, Bigchno ; the variety. The typical form was found at Lake 

 AVinnipeg by Drummond, and is common in Europe. 



0. cuuvikostiu:m, lledw. (Muse. Frond, ii. tiS, t. 24 ; Bruch & Schimp. 1. c, t. 35, 36), was 

 collected by Bigchno at Iatoux Springs at the ba.v! of the San Francisco Mountains, Arizona. It 

 is taller (.^ to 4 inches high) and very much biamdu-d, with lanceolate acute and often subserrate 

 leaves : capsule ovate to subspherical, brown and shining, with a broadly conic operculum produced 

 into a long obli(]ue slender beak and long persistent upon the jMominent columella. 



7. POTTIA, Ehrh. 

 Small terrestrial annuals or biennials. Leaves in several ranks, soft, dull, smooth 

 or papillose, oblong to oblong-obovate, acuminate, the excurrent costa sometimes 

 lamellate on the upper side ; areolation looser and hyaline at base. Flowers monce- 

 cious, the male axillary, bud-like or naked. Calyi)tra smooth, cucullate or rarely 

 mitriform. Capsule erect, immersed or exserted, ovate-oblong or truncate-obovate, 

 with depressed-conic obliquely rostrate or obtuse opercidum. Peristome none or 

 rudimentary, rarely of 16 entire or bifld teeth. — Anncalypta, Eoehl. 



