58 MUSCI-ACKOCARPI-rERlSTOMI. [Brt/ujn. 



p. 195. t. 28. — Meesia uliginosa, Hediv. St. Cr. v. 1. t. 1, 2. — 



Meesia minor, Brid. — Dill. Muse. t. 48. /. 58. 



Highland mountains, in wet places. Fr. Aug. — Stems an inch or 

 more long. Leaves erecto-patent, canaliculate t nerve strong, disappear- 

 ing below the point, colour a deep yellow-green, shining. 



4. B. triquetrum, Turn, (long-stalked Thread- Moss); stems 

 elongated branched, leaves lanceolate carinate acute serrated 

 reticulated, capsule pyriform erecto-cernuous, seta exceedingly 

 long. Turn. Muse. Hib. p. 115. E. Bot. t. 2394. Muse. 

 Brit. ed. 2. p. 195. t. 28. — Mnium triquetrum, Linn. — Meesia 

 longiseta, Hedw. St. Cr. v. 1. t. 22. — Diplocomium longisetum, 

 Web. el Mohr. 



On the borders of some Lake in the north of Ireland, (?) Dr. Scott. 

 Fr. ? 



5. B. dealbdtum, Dicks, (pale-leaved Thread- Moss) ; stems 

 short, leaves lanceolate acute plane reticulated serrated at the 

 points, capsule pyriform nearly erect. Dicks. Cr. Fasc. 2. 

 p. 5. /. 3. Fl. Brit. p. 1350. E. Bot. t. 1571. Turn. Muse. 

 Hib. p. 115. Drum. Muse. Scot. v. 2. n. 88. Muse. Brit, 

 ed. 2. p. 196. t. 28 — Meesia dealbata, Sw. Muse. Suec. t. 5. 

 /. 10. Hedw. Sp. Muse. t. 41. /. 6—9. 



Boggy mountains and low grounds, not common. Fr. Summer. — 

 The outer teeth are longer in proportion to the inner than in the other 

 species of this division, and their points are less obtuse. 



b. Teeth of the outer peristome as long as the inner. 



* Leaves withoid any thickened margin. 



\ Nerve of the leaf not reaching to the point. 



6. B. jtddceum, Schrad. (slender-branched Thread-Moss); 

 stems branched, leaves closely imbricated broadly ovate con- 

 cave entire obtuse, nerve reaching nearly to the point, capsule 

 obovato-cylindraceous pendulous. Schrad. Spicil. p. 70. Fl. 

 Brit. p. 1357. E. Bot. t. 2270. Muse. Brit. ed. 2. p. 197. 

 t. 28. Schwaegr. Suppl. v. 2. P. LI. t. 195 — B. argenteum, 

 /3. Linn.— Schwaegr. Suppl. v. I. P. LI. p. 188.— Dill Muse, 

 t. 50. / 63. 



Sides of streams, moist rocky banks, and sandy places, in alpine 

 districts. Fr. Nov. — This is a very beautiful moss ; with rather tall 

 slender stems, of a yellowish-green colour, and glossy. It has been 

 strangely confounded by continental Botanists with B. argenteum. 



7. B. crudum, Huds. (transparent green Thread-Moss); 

 stems simple, leaves rigid lanceolate erect the upper ones the 

 narrowest and longest all of them plane serrulate, the nerve 

 disappearing below the summit, capsule oblongo-subpyriform 

 cernuous. Huds. Angl. p. 491. E. Bot. t. 1604. Fl. Brit, 

 p. 1361. Turn. Muse. Hib. p. 130. Hobs. Br. Mosses, v. 2. 

 n. 76. Drum. Muse. Scot. v. 2. n. 80. Muse. Brit. ed. 2. 



p. 198. t. 28 Mnium crudum, Linn Hedw. St. Cr, v. 1. 



t. Z7.—DUI. Muse. t.5\.f. 70. 



