Bryum.} MUSCI. 33 



14. B. ventricosum, DICKSON. Stems elongated ; leaves ob- 

 longo-acuminate, subserrulate, their margins recurved, their 

 nerve excurrent; capsule oblong, pendulous. Dicks. Cr. Fasc. 

 l,p.4. Muse. Brit. ed. 2, p. 205, t. 30. 



On bogs and marshes; common. At Turk waterfall a variety 

 occurs with very wide, serrulate, rigid leaves, of a dark purplish- 

 brown. 



15. B. roscum, SCHKEBER. Leaves patent, obovato-spathulate, 

 acute, serrated, waved; their nerve percurrent ; capsule oblongo- 

 ovate, pendulous. Schreb. Fl. Lips. p~ 84. Muse. Brit. ed. 2, 

 p. 200, t. 29. 



In woods. Fruit at Blarney, County Cork, Mr. James Drummond. 

 A variety at Blackwater has piliferous leaves. 



16. B. ligulatum, SCHREBER. Leaves ligulate, undulate, re- 

 ticulated, marginated, denticulate, their nerve excurrent ; cap- 

 sule oblong, pendulous; lid conical. Schreb. Fl. Lips. p. 84. 

 Muse. Brit. ed. 2, p. 207, t. 30. 



Banks of streams and in woods ; common. Seta often many from 

 the same perichcetium. 



17. B. punctatum, SCHREBER. Leaves obovato-rotundate, 

 their base narrow, reticulated, marginated, their nerve seldom 

 quite percurrent ; capsule oblong, pendulous ; lid rostellate. 

 Schreb. Fl. Lips. p. 85. Muse. Brit. ed. 2, p. 207, t. 30. 



In wet places, in woods, sometimes in bogs ; common. The nerve 

 of the leaf is sometimes, though very rarely, excurrent. The seeds 

 are large : but are they really seeds ? Pressed in water, under the 

 lens, a sac appears to burst on one side and discharge numerous dark 

 punctiform bodies that do not in the least cohere : the sac is reti- 

 culated. 



18. B. rostratum, SCHRADER. Leaves broadly ovate, reticu- 

 lated, marginated, obtuse, denticulated; their nerve excurrent; 

 capsule ovate, pendulous ; lid rostrate. Schrad. spicil. p. 72. 

 Muse. Brit. ed. 2, p. 208, t. 30. 



On the banks of rivers in woods ; not uncommon. The outer 

 peristome is paler than the inner, contrary to the general rule. 



19. B. maryinatum, DICKSON. Leaves ovate, acute, reticu- 

 lated, marginated, serrated, their nerve excurrent ; capsule ob- 

 long, pendulous. Dicks. Cr.Fasc.Z, t.5,f. 1. Muse. Brit. ed. 

 2, p. 208, t. 31. 



Banks of the Dargle river, Dr. Whitley Stokes. This differs from 

 the preceding, not only by the shape of the leaves, but still more by 

 the structure of the peristome. 



20. B. hornum, SCHREBER. Stems elongated ; leaves lan- 

 ceolate acute, reticulated, denticulated, their nerve scarcely 

 percurrent ; capsule oblong, pendulous ; lid hemispherical, 

 mucronulate. Schreb. Fl. Lips. p. 83. Muse. Brit. ed. 2, p. 209, 

 *. 31. 



In woods and marshes ; common. Here, as in B. rostratum and 



D 



