487 ( 25 ) 



simple stems, 1-2 cm. long, matted together with brown tomen- 

 tum at base ; leaves 2-6 mm. long, crowded, their white bases im- 

 bricated, the green upper part of the blade spreading, much 

 broken, except on the youngest branches; margins finely and 

 sharply serrate, bordered by one or two rows of smooth, elon- 

 gated, clear cells, those of the blade densely papillose and opaque, 

 vein narrow, keeled and spinose on back. Dioecious, perichetial 

 leaf with a short basal blade only covering the foot and a long 

 rough awn; pedicels short, 3-5 mm. long, pseudo-lateral, straight 

 or curved ; capsules large, 3 mm., erect or oblique, strongly ribbed 

 when dry and brown ; lid mamillate, appressed ; peristome double, 

 teeth, orange-red, trabeculate on the inner face; spores large, .027- 

 .032 mm., rough, brown. 



Differing from B. thrausta in its smaller size, more strict, erect 



habit, stouter more rigid leaves. Agrees with Lechler's no. 2680, 



from Chili, labelled B. potosica at Kew, but differs from the type of 



that species at Paris in the much more conspicuous white base of 



the leaves. 



Bryum Rusbyanum C. MUUer. n. sp. Yungas. 6000 ft. 1885 



(3148a). 



Plants slender, stems erect with short, strict branches, bearing 

 small, erect, lanceolate, serrate leaves, vein disappearing below the 

 apex; stem leaves larger, acuminate with a prominent red vein, 

 also disappearing below the apex. Dioecious ; pedicel, 3 cm. 

 long, tawny, capsule pendent, 3-4 mm. long, with a neck half its 

 length ; lid mamillate; annulus double, inflated, dehiscent in frag- 

 ments; mouth with an orange-colored border ; cell-walls of exothe- 

 cium much thickened, peristome double, teeth white, granulose, 

 erose and irregular, endostome also granular with a basal mem- 

 brane, segments hardly distinguishable from the teeth, neither 

 carinate nor parted, basal rudiments of cilia two ; spores large, 

 yellow. 



Seemingly a Dicranolnyum most nearly allied to D.fiisifetinn, 

 Mitt, with the type of which it was compared at South Kensing- 

 ton. Nat. Hist, Museum. 



Bryum ( Weberd) albicans (VVahlb). Near Valparaiso, Chili, 

 June, 1885 (3145). Antheridial plants only. Sorata, Bolivia, 

 1 0000 ft. February, 1896 (3193). Sterile. 



Compared with Austin's, No. 189, Musci Appalachian!, these 

 specimens agree perfectly in all the leaf characters, but are a little 

 taller, 3-4 cm. in height. 



Biyum candicaiis TdiyXor. Sorata, 1 3000 ft. February, 1886, 

 )3I44). 



