POTTIOIDEAE. GRIMMIA. 1791 
viusculo oblique rostellato, annulo duplici, dentibus ple- 
rumque bifido -cribrosis rufo - purpureis, dein recurvis. 
Br. Europ. 25 —28. p. 21. t. 17 et 18. — Brid. I. p. 176. — 
Dicran. ovatum Fk, Fasc. Crypt. IV. n. 86. — Grimmia sciuroi- 
des Br. Germ. II. I. p. 155. t. 22. — Gr. patens ibid, p. 148, t. 21, — 
Brid. l. p. 179. — Gr. nigricans Lam. et Dec. Syn. Fl. Gall. No. 
1215? Brid. I. p. 178. 
B. affinis; robustior, theca in ped. breviore plerum- 
que haud exserto. Gr. affinis Br. Germ, I I. p. 142. t. 21. — 
Brid. I. p. 178. — Gr. canescens Schleich. Cat. Pl. Helv. 1807. n. 29. 
y. obliqua; theca subobliqua. Gr. obliqua Br. Germ. l. c. 
p. 153. t, 22. — Brid. I. p. 180. 
9. cylindrica; theca longior oblongo - cy mon Gr. 
cylindrica Br. Germ. 1l. c. p. 161. t 23. 
Patria. E montosis usque ad alpes summas per to- 
tam Europam. Var. f. loca saepius irrigata, y. siccissi- 
ma ventosa, Ò. umbrosa praeprimis convallium alpestrium 
praeferentes. — . estate. 
A Gr. obtusa primo adspectu habitu robustiore, theca 
brunnescente oblique rostellata et notis ceteris illustratis 
distinguitur. 
Sectio HI. Bryptodon Brid. Mant. Musc. p. 71 et Br. univ. I. 
p. 191, — Plantae procerae late irregulariter, haud orbiculariter, 
lamissime pulvinatae, regulariter dichotome ramosae, ramis fasti- 
giatis. Foliorum cellulae incrassatae, parietibus plus minus crenu- 
latis v. sinuatis. Perist, dentes Eugrimmiae, vel ad basin usque 
in crura duo filiformia fissi, Caetera Eugrimmiae, 
a. Pedunculus arcuatus. 
36. Gr. patens Br. Europ. (25—28. p. 18. t. X bis); 
dioica; laxe et late pulvinata decumbens longiscens, ra- 
mis curvatis pluries dichotoma, inferne nudiuscula ni- 
grescens v. luteo-fusca, superne folis densis siccitate 
appressis teretiuscula gracilis, luteo - viridis v. fuscescens ; 
folia caulina madore subito reflexa, dein patentia, curvate 
lanceolato - acuminata  obtusiuscula , angusta elongata, 
margine e basi ultra medium revoluto, profunde canali- 
culata, cellulis minutissime subrofundatis, basi paullo ma- 
joribus, angulatis, dein maxime incrassatis, nervo dorso 
