Dicranum.] MUSCI-ACROCARPI-PERISTOMI. 37 



B. Leaves inserted on all sides of the stem. 

 a. Leaves destitute of nerve, 



4. D. ylducum, HedV. (white Fork-Moss); stems branched 

 fastigiate, leaves lanceolate straight nerveless entire, capsule 

 ovate cernnons, lid rostrate. Iledw. Sp. Muse. p. 135. Sehwaegr. 

 Suppl. v. 1. p. 187. t. 48. Turn. Muse. Nib. p. 73. Fl. Brit, 

 p. 1-216. E. Bot. t. 2166. Hobs. Br. Mosses, v. 1. *. 36. Muse. 

 Brit. ed. 2. p. 92. t. 16. — Bryum glaucum, Linn. — Dill. Muse. 

 t.46.f 20, andt. 83./. 8. 



Boggy woods and heaths, frequent ; rare in fruit. Fr. Spring. — The 

 colour and reticulation of the leaves of this plant resemble those of the 

 Genus Sphagnum. 



b. Leaves furnished with a nerve. 

 * Leaves apiculate or piliferous. 



5. D. latifolium, Hedw. (broad-leaved Fork-Moss); stems 

 short, leaves oblong concave entire apiculate or piliferous, cap- 

 sule erect ovato-oblong, lid rostrate. Hedw. St. ( V. /•. 1. t. 33. 

 Turn. Muse. Hib. p. 79. Hobs. Br. Mosses, r. 2. n. 32. Muse. 



Brit. ed. 2. p. 92. t. 16 Trichostomum latif. Sehwaegr. Suppl. 



v. 1. p. 145.— T. pilfer inn, E. Bot. t. 2536.— Desmatodon latif. 

 Br id. Bryol. — Bryum pi lifer ton. Dicks. 



Banks in Ireland ; 4 miles from Dublin on the road to Woodlands, 

 Luttrelstown, Dr. Taylor. Near Aberfeldy, Scotland, Mr. Dickson, 

 chiefly in mountainous situations. Fr. — — . — Sometimes the nerve 

 is so far produced beyond the point of the leaf ami so diaphanous as to 

 render the latter truly piliferous. 



** Leaves not apiculate. 

 -f- Nerve very broad. 



6. I). longifdUum, Hedw. (long-leaded Fork-Moss); shuns 

 elongated, Leaves \<tv long Bubulato-setaceous ralcato-secund 

 serrulate their nerve very broad, capsule oblougo-ovate Dearly 

 erect, lid rostrate. Hedw. St Cr. v. 3. /. 9. Sehwaegr. Suppl 

 7-. 1./;. 176. Muse. Brit. ed. 2.p. 93, /. 16. 



Wei rocks, Glenmalur, Ireland, Dr. Taulo,-. On Ben Voirlkh ami 



Ben-y-gloe, Scotland. Fr. . — The leaves of this moss are remarkably 



long and slender and furnished with a nerve which occupies nearlj their 



whole breadth. I am not aware that it> fruit baa b. en found in Britain. 



7. I), cerviculdtum, Hedw. (red-necked Fork-Moss); stems 

 short, leaves lanceolato-subulate entire subsecund their nerve 

 verv broad, capsule ovate Bubcernuoui strumose, li«l rostrate. 



ffedw. St. Cr. r. :',. /. :\7 . Tun,. Mas,: lid,, p. 64. FL I 



/■. 1220. Hobs. Br. Mosses, v. I. rr.37. Sehwaegr. Suppl. /•• Up. 

 198. E.BottlQGl. Drum. Muse. Scot tf. I. n.S7. Husc. int. 



ed. -2. />. !'.:. f. hi. /). pusiUum, Hedw. St Cr. >-. -J. t 29. 

 /v. Brit, j: 1 219. /.'. Bot. i. 2491. Sehwaegr. Suppl >. I. 



