82 APLOPERISTOMI. [ Weissia. 



W. Schisti (of Scliwaegr.) has the leaves more carinate and 

 narrower. Of this state of W. striata we have seen none but 

 foreign specimens ; those from which the figure in Engl. Bot. 

 is taken, being W. acuta. The capsules, in all the varieties, 

 are sulcate, and have quite the same form ; and the lid is con- 

 stantly rostrate from a flat base. 



10. W. trichodes; stems scarcely any, leaves subulato-setaceous 

 entire, capsule ovate striated, lid rostrate. (TAB. XV.) 



Weissia trichodes. Hooker and Tayl Muse. Brit. ed. 1. p. 45. Hob- 

 son, Brit. Mosses, v. 1. n. 32. Funck, Deutschl. Moose, t. 9.f. 10. 



Gymnostomum trichodes. Mohr, Crypt. Germ. Brid. Meih. p. 11. 

 Moug. et Nestl. t. 711. Am. Disp. Muse. p. 10. Nees et Hornsch. 

 Bryol. Germ. 



Anictangium trichodes. Schwaegr. Suppl. v. 1. p. 33. t. 12. 

 HAB. On granite rocks, moistened by the spray of a 

 rivulet, near Dublin. Sandstone rocks, near Henfield, 

 Sussex. Mr. Borrer. 



The curious peristome of this plant, in an early stage, pre- 

 sents only a membranous ring, lying horizontally within the 

 edge of the mouth of the capsule ; this, however, as maturity 

 advances, splits into 16 equal, short, and very obtuse teeth, 

 which become erect, and afterwards reflexed over the mouth of 

 the capsule. In this state Mohr seems to have examined it, 

 and consequently ranged it under his Gymnostoma. Schwae- 

 grichen, taking into consideration the situation of the male 

 flowers, has classed it under his Anictangium. An evident an- 

 nulus is present. The minute plants, most nearly resembling 

 this, and only to be distinguished from it by a close inspection, 

 are W. pusilla, and Gymnostomum tenue. 



11. W. cirrata ; leaves broadly subulate crisped when dry their 

 margins recurved, capsule ovate, lid rostrate. (TAB. XV.) 



Weissia cirrata. Hedw. Sp. Muse. t. 12. / 7. Moug. et Nestl. n. 

 406. Hobson, Brit. Mosses, v. 1. n. 31. Funck, Deutschl. Moose, t. 10. 

 n. 16. Schwaegr. Suppl. v. 1. p. 75. Am. Disp. Muse. p. 25. Brid. 

 Meth. t. 41. 



Grhnmia cirrata. Smith, Fl. Brit. p. 1189. Engl. Bot. t. 2356. 



Grhnmia Dicksoni. Smith, Fl. Brit. p. 1 189. Engl Bot. t. 1420. 



Mnium cirratum. Linn. Dill. Muse. t. 48. / 42. 



HAB. On posts and rails, rarely on banks. 

 It will require a very attentive examination of the leaves of 



