Gymnostomum.] MUSCI-ACROCARPI-GYMNOSTOMI. 7 



Cr. Germ. p. 77. and 458. — Anictangium ccespititium, Hedw. 

 Suppl. v. 1. p. 35. t. 12. — Schistidium ccespititium, Brid.—Bryol. 

 Germ. p. 94. t. 8. /. 2. 



Crevices of rocks, near the highest summit of Ben-Lawers, with Saxi- 

 fraga ccrnua and Ferrucaria Hookeri. Fr. July.— This very distinct Moss 

 I had the good fortune to discover, whilst on a botanizing excursion with 

 the students of my class in the summer of 1830. It grew in tufts, so 

 dense that the moss would have passed unnoticed by me, were it not 

 for its glossy capsules, nestling among the leaves. The colour is brown- 

 ish-green. Stems branched, half an inch long. Leaves decidedly nerved, 

 even the perichaetial ones, though these are less evidently so. Lid 

 obliquely rostrate. Calyptra dimidiate, whence the plant should cer- 

 tainly be retained in Gymnostomum. Seta about as long as the capsule, 

 shorter than the perichaetial leaves. (G. tzstivum, arranged here in the 

 Muscologia Britannica, I have, at the suggestion of Mr. Wilson, removed 

 to Hedwigia). 



2. G. lapponicum, Hedw. (Lapland Beardless- Moss) ; leaves 

 linear-lanceolate channelled on the upper side along the pellucid 

 nerve crisped when dry, those of the perichaetium hroadly ovate 

 convolute, capsule suhexserted turbinate furrowed. Hedw. St. 

 Cr. v. S.p. 5. A. Fl. Brit. p. 1167. E. Bot. t. 2216. Drum. 

 Muse. Scot v. 1. n. 7. Muse. Brit. ed. 2. p. 17. t S.—Anictau- 

 gium, llcrfu: Sj). — Bryant, Dicks. 



In the crevices of rocks, on Snowdon, and abundant on the summits 

 of the high mountains of Scotland. Fr. July.— This is a very beautiful 

 and well marked species, when bearing fruit upon the higher Alps, rarely 

 exceeding an inch or an inch and a half in length ; but when growing in 

 warmer and moister situations it is 3—5 inches long and is always barren. 



3. G. viridissimum, Sin. (green tufted Beardless-Moss); 

 leaves broadly lanceolate patent dotted, capsule ovale fur- 

 rowed when old, lid obliquely rostrate. B. Bot. t. 1583. Muse. 

 B/i/. id. -J. p. 18. t. 6. — Dicranum riridiss., Fl. Brit. p. 1224. 

 Turn. Muse. /lib. p. 7 1. — Grimmia Forsteri, Fl. Brit. p. 1196. 

 /;. Bot. t. 2225. — Bryum Forsteri, Dicks. ( V. Fasc. 3. t. 7. f. 8. 



— (3. leaves reflrxed when moist. 



On trunks of trees, seldom on rocks, in the south of England and Ire- 

 land: rare in the north and in Scotland. Fr. Spring.— Densely pulvi- 

 nate : in its foliage almost exactly resembling Zygodon conoideum. Mr. 

 Wilson finds it on trees at Mucruss near Killarney, bearing fruit, and the 

 Rev. Colin Smith at [nverary, growing with tin- latter plant. 



i. <;. curvirdstrum, Hedw. (curve-beaked Beardless-Moss); 

 leaves Lanceolate-subulate erect rigid straight when dry, capsule 

 < brown) broadly ovate, lid obliquely rostrate Longer than the 

 capsule. Hedw. St Cr. u.2.t24. Fl.Brit.p. L164. E. Bot. 

 t. 221 i. Drum. Mute Scot v. I. n. B. Muse. Brit ed. 2.p. 19. 



t. (i G.stelUgernm, Sckrad.9—Fl. Britp. 1 L64*- *G. luteolum, 



FL Brit p. 1163. (not of /-'• Bot.)—G. pomijbrtne, Bryol 

 Germ* v. I. p. L68. /. 10. / 18. — Bryum astivum, Limn. — 

 />'. ttelligerum, Dicks. 



Mo trocki Ecclesmahon Burn, Linlithgowshire, Mr. Aruott. Neat 



