134 iVIPLOPERISTOMI. [Neckera. 



+- +- Cilice sixteen. 



14. 0. pulchellum ; stems creeping (short,) leaves narrowly lan- 

 ceolate crisped when dry, teeth of the peristome 16 approach- 

 ing in pairs patent (red), calyptra almost smooth plicate at 

 the base. (TAB. XXI.) 



Orthotrichum pulchellum. Engl BoL t. 1787. Hobson, Brit. Mosses, 

 v. 1. n. 57. Hook. Fl Scot. P. II. p. 137. Drummond, Muse. Scot, 

 v. 1. n. 55. Hook, and Grev. hi Edin. Journ. of Science, v. 1. p. 127. 

 Arn. Disp. Muse. p. 18. 



HAB. On trunks of trees. 



This species, which seems unknown on the continent, was 

 first distinguished by the late Mr. Brunton, who found it in the 

 north of England. We have collected specimens on the moun- 

 tains near Dublin, and Mr. Hobson has met with it near Man- 

 chester. The steins are from half an inch to an inch long ; 

 leaves of a bright green colour ; outer peristome of a fine red 

 colour, spreading. Calyptra beautifully plicate at the base, the 

 plicae coloured at their extremity. 



XXVI. NECKERA. 



GEN. CHAR. Fruitstalks lateral ; Peristome double ; the 

 outer of 16 teeth, the inner of 16 ciliae, connected only 

 at the very base by a short membrane ; Calyptra di- 

 midiate. (TAB. III.) 



A careful dissection of the inner fringe of any of the species 

 included under this genus will exhibit a peristome very closely 

 resembling that of Leshea of Hedwig, to which, indeed, it must 

 be confessed that Neckera is too nearly allied, differing only in 

 having the membrane which unites the cilise at the base so short, 

 as scarcely to rise at all above the mouth of the capsule. The 

 same reasons which induce us to unite Leskea with Hypnum 

 should have prevailed with us to add to them Neckera also, if it 

 were not a genus so universally adopted that we o not know of 



