APLOPERISTOMI. 85 



Weissia controversa. Hedw. St. Cr. v. 3. t. 5. Schwaegr. Suppl. v< 

 1. p. 77. Moug. et Nestl. n. 16. Hook. Fl. Scot. P. II. p. 131. Hob- 

 son, Brit. Mosses, v. 2. n. 29. Funck, Deutschl. Moose, t. 10. n. 21. 

 Drummond, Muse. Scot. v. 2. n. 35. Am. Disp. Muse. p. 25. 

 Weissia viridula. Brid. Meth. p. 38. 



Weissia microdus. Schwaegr. Suppl. v. 1. p. 77. Brid. Meth. p. 38. 

 Weissia curvicaulis. Brid. Meth. p. 39. 

 Weissia erythrogona. Brid. Meth. p. 39. 

 Weissia obscura ? Brid. Meth. p, 40. 



Grimmia controversa. Smith, Fl. Brit. p. 1177, Engl Bot. t. 1367. 

 Turn. Muse. Hib. p. 27. 

 Bryum viridulum. Huds. 



Bryum virens. Dicks. Dill. Muse. t. 48. /, 43. 

 HAB. Banks, veiy abundant. 



This plant may be distinguished from W. cirrata by its hav- 

 ing the leaves longer and more linear, with their margins by no 

 means recurved; likewise from W. crispula by the former of 

 these two characters ; and from both by its smaller size. We 

 have already noticed the similarity of this plant to Gymnosto- 

 mum microstomum, than which it is larger, and has longer and 

 finer fruitstalks. The teeth are of a very pale colour, and 

 occasionally split, as in the genus Dicranum. 



15. W. calcarea ; stems scarcely any, leaves from a broad base 

 linear obtuse thick with a very broad nerve, capsule turbi- 

 nate, lid rostrate. (TAB. XV.) 



Weissia calcarea. Hedw. Sp. Muse. t. 11. / 1 6. Hobson, Brit. 

 Mosses, v. 2. n. 30. Funck, Deutschl. Moose, t. 9. n. 8. Schwaegr. 

 Suppl v. 1. p. 115. Brid. Meth. p. 43. Arn. Disp. Muse. p. 25. 

 Weissia seligera. Brid. Meth. p. 43. 



Grimmia calcarea. Smith, Fl. Brit. p. 1177. Turn. Muse. Hib. p. 25. 

 Bryum calcareum. Dicks. Engl. Bot. t. 191. 

 HAB. On chalk cliffs and stones. 



The short, upright, rigid leaves of this plant have a striking 

 appearance, and resemble remarkably, in miniature, those of 

 Polytrichum aloides, to which also their dense texture assimi- 

 lates them, their upper half consisting almost entirely of their 

 broad nerve, which below is much narrower, passing gradually 

 on each side into the broad pagina. 



16. W. recurvata; stems scarcely any, leaves subulate, capsule 

 broadly ovate, fruitstalks curved, lid rostrate. (TAB. XV.) 



Weissia recurvata. Hooker and Tayl Muse. Brit. ed. 1. p. 47. Hob- 

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