



Best: North American Pseudoleskea 231 



inner subvaginant, lightly costate : pedicels 9—12 mm. long, curved: 

 capsules oval to obovate-oblong, asymmetric, inclined to subpend- 

 ant, elongated, contracted and arcuate when dry : urn 1.3— 1.9 mm. 

 long, .7— .9 mm. wide : exothecial cells thick-walled, oblong- 

 quadrate : exostomial teeth reddish margined, confluent into a 

 purplish red basal band 5 joints : endostomial band pale yellow, 

 finely papillose, about */£ the length of the teeth : segments 

 oblong-lanceolate, carinate, somewhat open, as long but narrower 

 than the teeth : cilia rudimentary : annulus narrow, indistinct : 

 operculum conic, rarely short beaked : spores rough, .014-.018 

 mm. ; ripe in spring and early summer. 



Type locality, North America. 



■ 



On rocks, stones, rotten wood, bases of trees and on the 

 ground. From Labrador (Waghorne) and New Hampshire (Allen, 

 Austin, C. E. Faxon) westward to British Columbia (Dawson, 

 Macoun), probably failing in the central region. Idaho (Leiberg), 

 Montana (Williams, Holzinger and Blake), Wyoming (Nelson), 

 Washington (Piper, Roll). 



Exsic. : Ren. & Card. Muse. Am. Sept. 93 as P. rigescens 

 Lindb.; Macoun, Can. Muse. 627 and 665 as P. atrovirens var. 



5a. Pseudoleskea radicosa compacta var. nov. 



In intricate tufts or loose mats, dark green to blackish, branches 

 often with yellow-green tips : stems 2—3 cm. long ; branches 

 short, turgid : stem leaves not rarely straight : median leaf cells 

 oval-rhombic to oblong-hexagonal. 



In general appearance quite distinct from the ordinary forms 

 of the type but lacking specific charters. On rocks, Rocky Mts., 

 B. C, Professor Macoun. 



Mitten based Hypnum radicosinn on Drumm. Muse. Am. 

 225, distributed as Hypnum tenax. Several sets of these were is- 

 sued and no. 225 was not the same in all. Some packets con- 

 tained simply P. radicosa, others a mixture of this and P. riges- 

 cens. As the capsules of the latter were in better condition than 

 those of the former, one was made to supplement the other. Wil- 

 son appears to have been the first to discover that there were two 

 distinct species in some of Drummond's 225, one of which he 

 named Hypnum conges turn, the other Leskea rigescens. He failed, 

 however, to publish descriptions of either, and had not Lindberg 

 rescued the latter, both would have been dropped as nomina ?iuda. 



