48 DICRANUM. 



Mr. Templeton alone seems to have found the true plant 

 of this species growing in dense patches on the white lime- 

 stone rocks in the neighbourhood of Belfast. We dare not 

 quote the Dillenian figures t. 49, f. 53, &c. usually referred 

 to this plant, for neither they nor the place of growth at all 

 accord with our plant. 



17. W verticillata ; stems branched; leaves broadly subulate, 



nearly flat, rather flaccid; capsule ovate; lid rostrate. 

 (TAB. XV.) 



W. verticillata. Schwaegr. Suppl. t. 20. Bryum verticillatum. Linn. 

 Sp. PL Bryum fasciculatum. Dicks. Grimmia verticillata. Turn. 

 Muse. Hib. p. 31. Engl Bot. t. 1258. Dill. Muse. t. 47. f. 35. 



HAB. Among trickling water on rocks. 



This singular species has the lower part of the stems fre- 

 quently covered with a white mineral incrustation. The 

 leaves are very plane, straight, erect and almost appressed, 

 and cellular in structure. 



18. W^. acuta\ stems branched; leaves subulato-setaceous, sub- 



secund, rigid, canaliculate ; capsule turbinate ; lid rostrate. 



(TAB. XIV.) 



W. aciita. Hediv. St. Cr. v. 3. t. 35. W. rupestris. Hedw. Sp. Muse, 

 t. 14. Bryum acutum. Dicks. B. splachnoides. Dicks. B. fulvellum, 

 Dicks. Crypt. fasc. 4. t. II. f. 1. Dicranum fulvellum. Engl Bot. #.2268. 

 Grimmia acuta. Turn. Muse. Hib. p. 29. Engl Bot. t. 1644. Dill. 

 Muse. t.47.f.34. 



HAB. Rocks in alpine countries. 



The leaves are remarkably rigid, and the capsule has 

 swelling at the base resembling an apophysis. The whole 

 plant varies in size, and is, as Mr. Turner has noticed, of a 

 shining brownish-green colour. Authentic specimens from 

 Mr. Dickson, as well as those figured in English Botany, 

 enable us to add the synonym of Dicranum fulvellum. 



18. DICRANUM. 



GEN. CHAR. Fruitstalks terminal ; (excepting), adian- 

 toides and D. taxifolium) Peristome single^ of 

 16 bifid, equidistant teeth; Calyptra dimidiate. 

 (TAB. II.) 



It is much to be lamented that this genus, including so great 



