— 220 — 



4. Alpestriformee. 



A. Leaves distinctly sulcate, papillose above and carinate; 

 12.Cl.caespiticia Bridel. — Dryptodon Brid.; Grimmia Juratzka. 

 G. sulcata Sauter. 



Leaves ovate-oblong obtuse, not recurved below, suberect 

 when moistened; basal cells short; hairpoint very short us. 

 wanting. Capsule oblong- cylindric chestnut-brown; lid conic; 

 pedicel straight. Tufts olive-green 0,5 — 2 c. m. high, very 

 dense. Dioecious. — Rocks and stone-walls r. JEur. Switzerl.! 

 Austria: Schimper. France: Husnot. 

 * G.arctica C. Mueller. 



» Leaves shorter, cucuUate at apex. — Amer. Greenl. »: CM. 

 in Lange, Greenl. fl. 



B. Leaves not or (sometimes in G. alpestris) faintly sulcate, 

 smooth. 



a. Leaves channelled, not recurved below. Capsule long- 

 exserted. Us. dioecious. 



IS.G.coniniutata Huebener. — Dicraaum ovatum Swartz; 

 Grimmia Weber et Mohr. 



Leaves ovate-lanceolate, flat or subinvolute above, patent 

 when moist, the uppermost much larger; basal cells long, the 

 upper short and opake; hairpoint rough not long, sometimes 

 wanting. Capsule oval brown; lid rostellate; annulus broad; 

 pedicel straight. Tufts very loose, grayish green above, brown 

 or blackish below, 2 — 4 centim. high. Dioecious. — Rocks, 

 gen. siliceous, princ. below alps. Eur. not r. Sweden, Norway, 

 Switzerl. 1 Amer. Can. Brit. Col.: Macoun. U. S.: Roell. 



14.(x.teretmervis Limpricht. 



Diiiers from the last: Leaves shorter, involute nearly all 

 around, suberect when moist; nearly all cells short; hairpoint 

 us. wanting. Tufts blackish. Stem often with brood-corpuscles. 

 Capsules unknown. — Calcareous rocks r. Eur. Switzerl. I Austria: 

 Gander. Greece: Haussknecht. 

 15.G.arctopMla Kindb. rev. bryol. 1896. 



Leaves ovate-oblong, involute above, suberect when moist, 

 appressed when dry, the uppermost not larger; basal cells gen. 

 short, the upper short opake; hairpoint not long. Capsule 

 suboblong brownish; lid apiculate; annulus indistinct; pedicel 

 straight. Tufts cohering us. blackish when dry, about 3 c. m. 

 high. — Amer. r. Greenl.: Berggren. Can. Cypress hills; 

 Macoun. 



