DICRANUM. 55, 



HAB. On alpine rocks. 



The present species is so closely allied to D. heteromal- 

 lum, that we are almost tempted to consider it as merely a 

 variety of that plant. However, the struma at the base of 

 the capsule is of a very decided kind, and the leaves are 

 more falcate. 



12. D.Starkii; stems somewhat branched ; leaves lanceolato- 

 subulate, falcato-secund, entire ; capsule oblongo-ovate, 

 suberect, strumose ; lid rostrate. (TAB. XVII.) 



D. Starkii. Web. et Mohr FL Crypt. Germ. Engl. Bot. t. 2227. 

 Schwaegr. Suppl. t. 46. Moug. et Nestl. n. 413. 



HAB. On alpine rocks. 



The capsules of this species are longer than those of the 

 preceding, to which it bears, we must confess, a very strong 

 resemblance. The figures in Engl. Bot. as well as in 

 Schwaegr. Suppl. represent the capsules as being longer 

 than those of any specimens we have yet seen. 



-t- -t- Capsule without a struma. ^ 



13. D. flavescens ; stems branched; leaves long, lanceolate, ser- 

 rulate, pointing in all directions, crisped when dry ; cap- 

 sules oblong, erect; lid rostrate. (TAB. XVII.) 



D. flavescens. Engl. Bot. t. 2263. Bryum flavescens. Dicks. 

 D. gracilescens. Web, et Mohr. Schwaegr. Suppl. t. 46. 



HAB. On wet sand, under the banks of rocky rivers. 



We have some doubt in quoting the synonym of Mohr, 

 as he describes his plant to have longer capsules. 



14. D. squarrosum ; stems somewhat branched ; leaves from a 

 broad sheathing base, lanceolate, obtuse, recurved and pa- 

 tent, directed to every side, crisped when dry; capsule 

 ovate, subcernuous; lid rostrate. (TAB. XVII.) 



D. squarrosum. Schrad. Journ. an. 1802. Turn. Muse. Hib. p. 69. 

 Schwaegr. Suppl. t. 4/. Engl Bot. t. 2004. Moug. et Nestl. n. 326. 

 Bryum palustre. Dicks. Dill. Muse. t.46.f.24. 



HAB. In very wet situations among mountains. 



The stems vary in length from one to three inches. This 

 is the most squarrose of the British Dicra?ia. 



15. D. pellucidum ; stems branched; leaves lanceolate, their 

 margins slightly undulated, serrated, rather obtuse, point- 

 ing in all directions ; capsule ovate, subcernuous ; lid ro- 

 strate. (TAB. XVII.) 



D. pellucidum. Swartz Muse. Suec. p. 35. Turn. Muse. Hib. p. 68. 

 Engl. Bot. t. 1346. Moug. et Nestl. n. 122. Bryum pellucidum. Linn. 

 Sp. PL p. 1583. Dill. Muse. t.46.f.23. 



