94 HYP NUM. 



U. serpens, and by Schwaegrichen's description, where \\6 : 

 says that its nerve reaches only half way up the leaf. From 

 H. serpens our plant differs in its mode of growth, its 

 fascicled branches, the shape and texture of the leaves, and 

 rostrate lid. Its nearest affinity is with H. populeum, from 

 which it may be known by its narrower, entire leaves, as 

 well as its long operculum. The figure of the leaf in En- 

 glish Botany is extremely incorrect, and the nerve is wholly 

 omitted. 



8. H. serpens ; leaves ovato-lanceolate, rather obtuse, patent, 



entire, their nerve for the most part reaching to the sum- 

 mit ; capsule cylindrical, curved, cernuous ; lid conical* 

 (TAB. XXIV.) * 



H. serpens. Linn. Sp. PL p. 1596. Turn. Muse. Hib. p. 168. Engl. 

 Bot. 1. 1037. Moug. et Nestl n. 332. H. tenue. Schrad.U. contex- 

 tum & H. spinulosum. Hedw. H. subtile. Dicks. Turn. Engl. Dot. 

 t.2496.DW. Muse. t. 42. f. 64. 



HAB. Moist banks, trunks of trees, on pales and decayed 

 wood in various situations. 



Schwaegrichen has well observed of this species, " vix 

 datur exemplum tantae inconstantiae nervi in ullo Hypno;" 

 for different leaves on the same individual have the nerve 

 varying much in length ; yet in the older stems it will gene- 

 rally be found reaching to the point, and of a dark brown 

 colour. It is the almost total disappearance of the nerve 

 in some instances that has caused this plant to be mis- 

 taken for the Lcskea sultilis of Hedwig, which has the 

 true fringe of a Leskea, and has not we believe yet been 

 found in Britain. The capsules of H. subtile in English 

 Sot any are figured from foreign specimens. Our own exa- 

 mination of the Dillenian Herbarium does not confirm the 

 opinion of Mr. Turner, that the specimens represented in 

 the Historia Muscorum, t. 42. f. 64. are those of Lcskea 

 sultilis. We have accordingly referred to that figure under 

 the present plant. 



* * Leaves serrated. 



9. H. populeum ; leaves lanceolate, acuminated, serrated, mar- 



gin slightly reflexed, nerve reaching to the point ; capsule 

 ovate, nearly erect ; fruitstalks rough, lid conical. (TAB. 

 XXIV.) 



H. populeum. Hediv.Sp.Musc.t.7Q.f.\-6. H. implex um. Swartz. 

 Turn. Muse. Hib. p. 173. t. 16. Engl Bot. t. 1584, 



HAB, On trees and rocks. 



