Polytrichum.~] APLOPERISTOMI. 47 



keels, capsule ovate quadrangular with an evident apophysis. 



(TAB. X.) 



a. yucccefolium ; stems a span and more in height ; leaves with their margins 

 of the same colour ; capsule acutely quadrangular, its apophysis very dis- 

 tinct. 



Polytrichum commune. Linn. Sp. PL p. 1573. Hedw. Sp. Muse. 

 Menzies in Linn. Trans. Turn. Muse. Hib. p. 80. Smith, Fl. Brit, 

 p. 1372. Engl Bot. t. 1197. Schwaegr. Suppl. v. 1. p. 314. Punch, 

 Deutschl. Moose, t. 55. /. 7. Hobson, Brit. Mosses, v. 1. n. 16. Drum- 

 mond, Muse. Scot. v. 2. n. 16. Hook. Fl. Scot. P. II. p. 126. Am. 

 Disp. Muse. p. 71. 



P. remotifolium. Schwaegr. Suppl. v. 1. p. 320. (together with P. 

 purpurascens, and P. subpilosum of the same author, according to Mr. 

 Arnott.J 



P. Commersonianum. Brid. Meth. p. 198. 



P. yuccsefolium. Ehrh. Mohr, Moug. et Nestl. n. 415. 



P. perigoniale. Punch, Deutschl. Moose, t. 55. f. 8. Dill. Muse. t. 

 54. / 1. 



(>. attenuatum ; stems three or four inches in height ; leaves shorten their 

 margins pellucid ; capsule ohtusely quadrangular ; apophysis indistinct. 



P. attenuatum. Menzies in Linn. Trans, v. 4. t. 6. f. 2. Turn. 

 Muse. Hib. p. 84. Smith, Fl. Brit. p. 1373. Engl Bot. t. 1198. 



P. formosum. Hedw. Sp. Muse. t. 19. f. 1. Schwaegr. Suppl. v. 1. 

 p. 315. Mohr. Wahl Moug. et Nestl. n. 416. Punch, Deutschl. 

 Moose, t. 55. / 9. 



P. gracile. Menzies in Linn. Trans, v. 4. t. 6. / 3. Turn. Muse. 

 Hib. p. 85. Engl Bot. t. 1827. Mohr. 



P. longisetum. Swartz, Muse. Suec. t. 8. f. 16. Punch, Deutschl. 

 Moose, t. 56. / 11. 



P. aurantiacum. Hoppe. Wahl. 



P. paUidisetum. Punch, Deutschl. Moose, t. 56. f. 10. 



HAB. Heaths, in wet and dry places, varying much in 



height according to situation. 



After an attentive examination of the above synonyms and 

 specimens, received, in most instances, from their respective 

 authors, we cannot but consider them all to belong to the same 

 species ; and, indeed, that, as varieties, we think only two are 

 worthy of particular attention. In all, the stems are simple, or 

 only branched very low down, and among the roots. Our var. a. is 

 found from a span to a foot in height, with the leaves very patent, 

 often recurved, long and narrow, their margins scarcely at all 

 diaphanous ; the capsule is sharply quadrangular, the apophysis 



