WEISSIA. 45 



JLeersia lanceolata. Hediv. St. Cr. v. 2. t. 23. Grimmia lanceolata. 

 /. Bot. t. 1408. Mohr.Moug. et Nestl. n. 310. Grimmia aciphylla. 

 Mohr. Encalypta lanceolata. Turn. Muse. Hib.p. 19. Bryum lanceo- 

 latxim., Dicks. 



HAB. On moist banks. 



This plant is only to be distinguished from W. Starkeana 

 (to which it is very nearly allied) by the larger size, by the 

 narrower leaves, their laxer reticulation and more excur- 

 rent nerve, and by its rostrate lid. In general habit it ap- 

 proaches Gymnostomum truncatulwm, particularly the larger 

 varieties of it, but its leaves are more erect and more closely 

 imbricated, and the apiculus is longer. We haveexamined au- 

 thentic specimens from Dr. Mohr of his Grimmia aciphylla, 

 and we fully accord with Schwaegrichen that it is not to be 

 distinguished from our plant. 



- *- Leaves linear or sululate. 



'8. W. striala ; leaves linear, denticulate, crisped when dry ; cap- 

 sule ovato-turbinate, sulcate, erect; lid obliquely subulate. 

 (TAB. XV.) 



*. minor; leaves lineari-subulate, subserrulate. 



Grimmia striata. Schrad. Diar. Bot. v. 2. p. 57. Weissia fugax. Hedw. 

 Sp. Muse. 1. 13. Moug. et Nestl. n. 407. W. Schisti. Schivaegr. Suppl 

 t. 20. (not of Engl. Bot.") 



f>. major ; leaves broadly-linear, denticulate. 



W. denticulata. Schivaegr. Suppl. t. 19. 



HAB. Banks in alpine countries. 



The variety /3., the fPl denticulata of Schwaegrichen, has 

 the leaves strongly denticulate and much broader than in 

 the common appearance of W. striata] yet we have gather- 

 ed so many specimens in intermediate states, that we can- 

 not feel satisfied in considering them otherwise than as va- 

 rieties. The W. Schisti (of Schwaegr.) has the leaves more 

 carinate, and narrower. Of this state of W. striata we have 

 seen none but foreign specimens ; those from which the 

 figure in English Botany is taken being W. acuta. The 

 capsules in all the varieties are sulcate, and have quite the 

 same figure ; and the lid is constantly rostrate from a flat 

 base. 



9. ^K trichodes ; stems scarcely any ; leaves subulate-setaceous, 

 entire; capsule ovate, striated ; lid rostrate. (TAB. XV.) 



Gymnostomum trichodes. Mohr Cr. Germ. Anictangium trichodes. 

 Schwaegr. Suppl. 1. 12. Grimmia trichodes. Engl. Bot. t. 2563. 



HAB. On granite rocks moistened by the spray of a rivu- 

 let, near Dublin. Sand rocks near Henneld, Sussex, Mr. 

 Botrer. 



