Bartramia.^ DIPLOPERISTOMI. 147 



Funck, Deutschl. Moose, t. 24. / 6. Brid. Meth. p. 116. Schwaegr. 

 Suppl v. 1. P. II. p. 61. Am. Disp. Muse. p. 41. 

 Bartramia falcata. Hook, in Linn. Trans, v. 9. p. 317. 



Mnium fontanum. Linn Hedw. Sp. Muse. 



Bryum fontanum. Engl Bot. t. 390. 



p>. marchica , stems from half an inch to an inch long ; leaves lanceolate, 

 acuminated. 



Bartramia marchica. Swartz, in Schrad. Journ. Schwaegr. Suppl. 

 v. 1. P. II. p. 59. Engl Bot. t. 2074. Moug. et Nestl. n. 623. 

 Funck, DeutscU. Moose, t. 24. n. 5. 



Mnium marchicum. Hedw. St. Cr. v. 2. t. 39. 

 Bartramia fontana. j8. pumila. Turn. Muse. Hib. p. 107. t. 10. f. 1. 

 HAB. Wet places in a turfy soil. 



Not only do the stems of this moss vary much in size, but 

 the leaves also in size and direction, and we have seen speci- 

 mens, which we have gathered hoth in Switzerland and Scot- 

 land, with leaves as decidedly curved to one side as in B. 

 falcata of Hooker in Linn. Trans., whence we are led to sup- 

 pose that even that species may be a variety of B. fontana. 

 B. marchica we have traced, from its usually small size, up to 

 the true and common appearance of the present species ; and, 

 indeed, the var. (3. of Mr. Turner is so intermediate between 

 the two kinds now mentioned, that we hesitated for some while 

 to which to refer it. B. radicalis, Muhlenbergii, uncinata, and 

 even B. sph&rocarpa, all of Schwaegrichen, can, we fear, only 

 be considered as slight varieties of this very fallacious plant, 

 which, in some state or other, seems to grow in every part of 

 the world. 



* * Fruitstalks very short, curved. 



5. B. Halleriana ; stems much elongated proliferous, leaves long 

 subulate flexuose serrated above, fruitstalks lateral from in- 

 novations very short curved. (TAB. XXIII.) 



Bartramia Halleriana. Hedw. St. Cr. v. 2. t. 40. Turn. Muse. 

 Hib. p. 109. Smith, Fl Brit. p. 1339. Engl Bot. t. 997. Moug. et 

 Nestl n. 35. Funck, Deutschl. Moose, t. 24. / 7. Hook. Fl Scot. P. 

 II. p. 140. Hobson, Brit. Mosses, v. 2. n. 54. Drummond, Muse. 

 Scot. v. 1. n. 57. Schwaegr. Suppl. v. 1. P. II. p. 64. Brid. Meth. 

 p. 115. Arn. Disp. Muse. p. 40. 



Bryum laterale. Dicks. 



K 2 



