491 (28a) 



of Quito and Weddell's from Peru, we have thought it best to 

 enumerate them under this species. 



PoLYTRiCHUM ANGUSTiCAULE CM., n. sp. Near Yungas, 4000 ft., 



1885(3155). 



Plants large, 8-10 cm. high; stems simple, 2-4 cm. high; leaves 

 6-8 mm. long, the clasping base oblong, brown or slightly scari- 

 ous on the margins, tapering into a slightly longer apex, with in- 

 curved entire margins ; vein rough on back, with two or three 

 rows of sharp teeth, excurrent into a smooth or only slightly rough- 

 ened awn ; lamellae covering almost all of the blade, of 6-7 rows 

 of cells, the last row elongated, conical and smooth. Dioecious ; 

 male plants proliferous ; perichetial leaves with a long smooth 

 point; seta 6-8 cm. long, stout, glossy, curved at apex ; capsules 

 large, 5 mm. long, cubic, with a short wrinkled apophysis ; lid 

 dark red, beak long; teeth white, 64. 



Closely allied to P. aristiflonim Mitt., and compared with speci- 

 mens sent us by Wm. Mitten, collected in Venezuela by Funk and 

 Schlim, no. 472. Differs in the longer, scarcely roughened awn of 

 the leaves, which are more closely appressed when dry, and in the 

 larger capsules. 



PLEUROCARPI. 



All the specimens of the pleurocarpous mosses as well as the 

 acrocarpous ones were carefully studied and separated before du- 

 plicates were sent to Dr. Miiller, yet in two cases in the genus 

 Hookcria, there was evidently a mixture of species growing to- 

 gether, which in one instance seems to have misled Dr. Miiller. 



HooKERiA Bakeri E. G. Britton, n. sp. Near Yungas, 4000 ft. 



1885 (3163). 



Plants yellowish-green, large and coarse; stems 2-3 cm. long; 

 branches i cm., leaves curled and crisped when dry, more or less 

 undulate with long subulate tips 2 mm. long, veins prominent 

 when dry, ending just inside the margin, which is entire below, 

 serrulate along the tapering apex and bordered by 3 rows of nar- 

 row, elongated cells; those of the blade very large and clear, not 

 papillose. Pedicel 20-25 trim, long, bright, glossy brown ; cap- 

 sules ovoid, 2 mm., brown, walls thick ; lid conic-rostrate ; teeth 

 long, slender, brown and incurved in pairs, and papillose ; endo- 

 stome yellow, erect, carinate segments closed. 



Compared with H. inargmata to which it is related, but differs 



in the lighter green leaves, broader and less acuminate, the cells 



more lax and hyaline. 



