NEW HEPATICiE. 379 



subpatent. Pedicel about twice as long as the calyx. Cap- 

 sule oblongo-ovate. This approaches M. Douglasii, Tayl., 

 in habit ; but the scaly stems and the narrow-mouthed and 

 distinctly toothed calyx will readily distinguish it. 

 2. M. arborea, Tayl. ; caule laxe csespitoso, adscendente vage 

 bipinnatim ramoso, ramis attenuatis, subflagelliformibus, 

 deflexis ; foliis laxe imbricatis, patentibus, late ovatis, 

 obtusis, margine undulatis, basi ciliato-dentatis ; lobulis 

 stipulisque oblongis, obtusis, basi processus lineares feren- 

 tibus, perichaetialibus erectiusculis, acutis, dentatis ; calyce 

 campanulato, laterali, oris laciniis lanceolatis, ciliato-den- 

 tatis. 

 Hab. On Pichincha, and in woods on Assuay, Peru, at 

 10,000 feet elevation. Prof. William Jameson, Hook. Herb. 

 Tufts loose, brownish-olive. Stems 10-12 inches high; 

 shoots complanate. Leaves obtuse, waved, especially on the 

 ventral margin. Calyptra large, rather opaque and brown ! 

 Calyx split down on one side. Pedicel about twice as long as 

 the calyx. Capsule oblongo-ovate. This is allied to the pre- 

 ceding, differing, however, by the wide mouthed calyx, with 

 acuminate lacinia, and very remarkably by the dentato-ciliate, 

 acute perichaetial leaves. Again, the base of the leaf is not 

 decurrent, as in M. subciliata, L. et Ldbg., nor are the lobules 

 imbricated or ligulate. The larger fronds, bipinnate ramifi- 

 cation, and the complanate and more patent leaves separate 

 ours from M. Leiboldi, Gottsche. 



2. M. Douglasii, Tayl. ; fronde lanceolata, utrinque acumi- 

 nata ; caule laxe csespitoso, adscendente, subbipinnato ; 

 pinnis attenuatis, patenti-recurvis, foliis imbricatis, pa- 

 tenti-recurvis, subrotundato-ovatis, apice recurvis, margine 

 planis, oblique cordatis, basi recurvis, obtusis ; stipulis late 

 ovato-oblongis, decurrentibus, integerrimis ; calyce laterali, 

 exangusta basi rotundato-obovato, compresso, ore amplo, 

 recurvo, minutissime denticulate 

 Hab. North-west coast of America. Douglass, Hook. Herb. 



Yellowish olive-green. Stems 6-8 inches long; pinnules 

 very slender. Perigonia occupying the place of pinnules, 



