42 MUSCI-ACROCARPI-PERISTOMI. [Dieranum. 



ed. 2. p. 104 — x. vulgaris; stems elongated robust, leaves slightly 

 falcato-secuncl. D. scoparium, Hedw. Sp. Muse. p. 126. Fl. Brit, 

 p, 1201. Tarn. Muse. Hib. p. 58. Hobs. Br. Mosses, v. I. 

 n. 41. Drum. Muse. Scot. v. 1. n. 33. Schwaegr. Suppl. v. 1. 

 p. 163. t. 42. — Bryum scoparium, Linn. — E. Bot. t. 354. Dill. 

 Muse. t. 46. f. 16. — /3. majus ; stems more elongated, leaves 

 more falcate and larger. D. majus, Turn. Muse. Hib. p. 58. 



E. Bot. t. 1490. Schwaegr. Suppl. v. I. p. 163. t. 40 y. fusces- 



cens; smaller in every part, leaves subsecund narrower some- 

 what crisped when dry. D.fuscescens, Turn. Muse. Hib. p. 60. 



FL Brit. p. 1204. E. Bot. t. 1597 D. congestum, Schwaegr. 



Suppl. v. 1. p. 168. £. 42. — D. longirostre, Schwaegr. Suppl. v. 1. 

 p. 170. t. 44. 



Woods and hedges. — y. principally in mountainous countries. Fr. 

 Aug. — Most authors consider the three varieties above noticed as distinct 

 species ; but I must confess myself unable to draw any decided line of dis- 

 tinction : they are seen to pass gradually into each other, both in British 

 and foreign individuals ; and the species is met with in almost every 

 quarter of the globe. The capsule m * is often cylindrical and elongated, 

 less drooping; but at other times it is as short and as much inclined as 

 in p> and y. 



23. D. vdrium, Hedw. (variable Fork-Moss); stems short, 

 leaves narrow hastato-lanceolate, capsule ovate, lid rostrate. 

 Muse. Brit. ed. 2. p. 102. t. 17. — «. viride ; leaves generally 

 pointing in all directions lanceolate green, capsules subcernuous. 

 D. varium, Hedw. St. Cr. v. 2. t. 34. Turn. Muse. Hib. p. 65. 

 Fl. Brit. p. 1209. E. Bot. t. 1215. Hobs. Br. Mosses, v. 1. 

 n. 42. Drum. Muse. Scot. v. 1. n. 39. Schwaegr. Suppl. v. 1. 

 p. 174.— D. rigidulum, Sw. Muse. Suec. t. 3. /. 7. Hedw. Sp. 

 Muse. t. 32. Schwaegr. Suppl. ». 1. p. 174. Fl. Brit. p. 1211. 

 — D. callistomum, Fl. Brit. p. 1211. — Bryum callist. Dichs. — 

 (3. rufescens ; leaves subsecund lanceolato-subulate reddish, cap- 

 sules erect. D. rufescens, Turn. Muse. Hib. p. 66. E. Bot. 



t. 1216.- — Bryum rufescens, Dicks. — Dill. Muse. t. 50. /. 59 



y. luridum ; leaves subsecund subulate of a lurid colour, cap- 

 sules subcernuous. Muse. Brit. ed. 2. p. 102. 



Moist banks. Fr. Winter. — In the rufescent variety the leaves are 

 more pellucid and more reticulated than in «. : — but the var. y. partakes 

 of the character of the two others. 



24. D. heteromdllum, Hedw. {silky -leaved Fork-Moss); stems 

 branched, leaves subulate falcato-secund nearly entire, capsule 

 ovate subcernuous, lid with a long beak. Hedw. St. Cr. v. 1. 

 t. 26. Turn. Muse. Hib. p. 61. Fl. Brit. p. 1204. E. Bot. 

 t. 1272. Hobs. Br. Mosses, v. 1. n. 43. Drum. Muse. Scot. v. 1. 

 n. 40. Schwaegr. Suppl. v. 1. p. 173. Muse. Brit. ed. 2. 

 p. 103. t. 18. — (Z>. orthocarpum, D. curvatum and D. inter rup- 

 tum of Hedw. Sp. Muse, can scarcely be distinguished from this). 

 —Dill. Muse. t. 47./. 37 and 38. 



Shaded, especially sandy banks, frequent. Fr. Oct. Nov. — Leaves 

 deep and bright green. Seta? and capsules red-brown. 



