NEW IIEPATICiE. 393 



is distinguished by the far denser structure of the leaves, 

 which too, are longer, while the stipules are smaller. 



** Slipulis divisis. 



10. L. decora, Tayl. ; caule implexo, prostrato, subramoso ; 

 foliis approximates, subpatentibus, obovatis, apiculatis, 

 dentatis; lobulis minutis, rotundato-ovatis ; stipulis cor- 

 datis, bifidis ; calyce demum axillari, oblongo-obcordato, 

 spinoso-dentato. 

 Hab. Dominica. Hook. Herb. 



Patches scattered, pale olive-green. Stems scarcely half an 



inch long*. Leaves loosely imbricated, rather flaccid, and 



flexuose, obtuse, yet with a sudden subulate apiculus, or 



large tooth. Perichfetial leaves patent, their lobule ligulate, 



obtusely emarginate, the stipular oblong, bifid, denticulate. 



Calyx exserted. This, perhaps, may be compared with 



Lejeunia axillaris, Nees, having the calyx very similar, and 



the leaves dentate, but the bifid stipules and obtuse and api- 



culate leaves are abundant marks of difference. 



H. L. crticianella, Tayl.; caule sparso, exili, procumbente, 



subramoso ; foliis laxis, erecto-patentibus, ovato-lingulatis, 



apice tridentatis, dentibus divaricatis ; lobulis involutis 



ovatis, longius unispinosis; stipulis minutis, bipartitis, 



segmentis linearibus, divaricatis ; perigoniis majoribus, 



terminalibus, ovato-lanceolatis. 



Hab. On Jung. Boryana, Sw. Demarara. 



Inconspicuous, pale, scattered ; stems scarcely 1 line long. 

 Remarkable in the genus for the cruciform summits of the 

 leaves, and singular in the elongate spine of the lobule. 

 12. L. lyratifolia, Hook. fil. et Tayl. ; caule minuto, tenui, sub- 

 disperso, procumbente, vage ramoso ; foliis laxis, patentibus, 

 subquadratis, angulo antico exteriori producto ; lobulis ob- 

 longis, involutis ; stipulis bipartitis, segmentis lanceolatis, 

 divaricatis; calyce axillari, ex angusta basi obovato, qua- 

 drialato, tubifero. 

 Hab. On Parmelia diatrypa, Ach. Van Diemen's Land. 

 Patches very loose, very pale brownish-olive. Stems 



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