—25— 



gestion. It was hoped to find other stations than the type localities for the two 

 plants involved. But so far it does not appear that either plant has been col- 

 lected a second time. Through the kindness of Mrs. Britton, the writer learns 

 tiiat some of the material from the type station of Grhmnia Manniae is in the 

 herbarium of Columbia University, which makes it possible to investigate con- 

 clusixely the claims of the two species independently. Yet, according to a note 

 and drawings in a recent letter from M. Cardot, who has a right to be heard on 

 this point, it seems hardly necessary to doubt further the distinctness of the two 

 species. For the benefit of American students, both are published herewith. 



M. Cardot says : "Although approaching it closely in scnne respects, Grim- 

 mia Afafiniae is quite different, having larger, thicker leaves, with basal areola- 

 tion loose, formed of hyaline thin walled cells; while in Grinimia Holzingeri 

 the basal cells are yellowish and thick walled. I inclose comparative figures of 

 the two mosses." 



These figures represent leaves and basal leaf cells of the two species, and 

 argue well for the \alidity of Grinimia Holzingeri. 



nOSSES NEW TO NORTH AMERICA. 



* Desmatodon svsTiLioiDES Ren. & Card. Bot. Gaz. 30: i6. />/. // Jujy, 

 1900. Monoicous, gregarious. Stems short, erect. 2-5mm. high. Leaves 

 crowded in a rosette, spreading, oblong-lanceolate, rather suddenly and 

 shortly acuminate, acute, margins plane, irregularly dentate above; nerve 

 strong, reddish, percurrent or shortly e.xcurrent; lower cells lax, sub-rectan- 

 gular, empty, hyaline or yellowi.sh; middle and upper cells small, obscured 

 by numerous papillae; 2-4 rows on the margin of quadrate or shortly rec- 

 tangular cells, hardly or faintly papillose, forming a distinct yellowigh 

 translucent border. Perichaetial leaves scarcely different, a little shorter. 

 Capsule erect, 8-12 mm. long, on a yellow or pale red seta, twisted to the right 

 when dry, short, oblong, brown; operculum short-conic or sub-rostrate, persist- 

 ing at the top of the columella; no annulus or peristome observed. Spores 

 smooth, 18-20^ in diameter. 



Labrador: L'Anse-au-Mort (Rev. A. C. Waghorne, 1894). 



By the lid attached to the coUumella and persistent after the opening of the 

 capsule this species resembles D. sy sty litis B. & S., but is clearly distinct from 

 it by the leaves of a more obscure and more papillose areolation, witn a distinct 

 pellucid yellowish border, the nerve stouter, brownish, not or very shortly e.x- 

 current, and by the total lack of peristome; at least all the capsules we have 

 been able to examine do not show the slightest trace of this organ. The pel- 

 lucid border of the leaves shows some relationship between D. systylioides 

 Ren. & Card, and D. Porteri James, but the latter has a much narrower cap- 

 sule with a highly conic lid not adhering to the coUumella, and the peristome 

 and annulus are well developed. 



* Barbula eustegia Card. & Ther. /. c. Dioicous ? gregarious in mats. Stem 

 very short, 1-2 mm. high. Leaves when dry erect, flexuous, when moist re- 

 curved, spreading, linear-lanceolate, acute, sub-acute or slightly obtuse, plicate, 



♦Translated by Miss E. A. Warner. 



