— 262 — 



Upper leaves from sheathing base tapering to a longer and 

 narrow subulate or at apex obtuse entire acumen, crisped; 

 basal cells rectangular; costa nearly filling the acumen but not 

 excurrent. Capsule oval-oblong erect; lid much shorter; teeth 

 half-twisted; pedicel red below, yellow above. Stem short not 

 or loosely tufted. Sterile plants with smaller sublinear or 

 ovate-oblong obtuse leaves. — Calcareous rocks and sandy soil 

 in warmer districts r. Eur. Italy: Giordano, com. Bottini. 

 Spain: Hegelmaier, com. C. Mueller. Amer. U. S. Massachusetts: 

 Boll, com. C. M. Can. Brit. Col.: Macoun. 

 69.B.inacrostegia SulJivant. — Trichostomum Snll. icon, muscor. 

 (not mentionned in Lesq. et J. man.); Barbula Kindb. 



Differs from the last: Leaves abruptly tapering to a some- 

 what broad but attenuate obtusate acute and near apex denti- 

 culate acumen. Capsule cylindrio inclined or faintly curved; 

 lid longer; teeth (as in B. Corsica and B. sparsidens) spreading 

 above. — Amer. r. »U. S.»: Sullivant. 



4. Pseudo-Didymodon Kindb. 

 a. Acutseformes. 



A, Peristome wanting; annulus revoluble. Leaves faintly 

 papillose, straight when moist. 



TO.B.rabiginosa Mitten. 



Leaves ovate-oblong or broadly ovate-lanceolate reflexed 

 below, not appressed; cells short; costa scarcely excurrent. Pe- 

 richetial leaves from ovate-oblong base tapering to a sublinear by 

 costa not wholly (in lower part) fi^lled point. Capsule suboblong 

 pale brown; pedicel not long. Tufts greenish somewhat dense 

 not high. — Amer. r. U. S. Pacif. distr.: Henderson, com. 

 Oardot. 

 * B.subicmadophila C. M. et Kindb. 1. c. 



Leaves subpellucid above, more spreading when moist; the 

 perichetial with shorter base. Peristome and annulus not seen. 

 — Amer. r. Can. Brit. Col.: Macoun. 

 71.B.melanocarpa C. M. et Kindb. 1. c. 



Differs from B. ruhiginosa: Leaves blackish brown appressed 

 when dry; costa more distinctly excurrent. Capsule dark brown 

 finally blackish; pedicel very long. Tufts loose. Fruiting stem 

 very short. — Rocks r. Am^. Can. Brit. Col.: Macoun. 



B. Peristome contorted. 



a. Leaves smooth straight when moist. Peristome once 

 contorted; annulus us. indistinct. 



