54 BRITISH HEPATIC JE. 



AmpMgastria generally present on the barren shoots, distant, 

 very minute, 1-3-partite, the segments subulate. 



Texture of the leaves firm, scarcely altered when dry. 



Colour paler at the summit, yellowish-green to olive-brown, in 

 some specimens tinged with purple ; sub-pellucid, with a slight oily 

 lustre. 



Cells with distinct walls (f. 11, 5, 7), of pretty uniform size, 

 slightly thickened at the angles, the interior (especially near the 

 walls) filled wihh chlorophyll granules. Marginal cells quadrangular, 

 8TT " ^7 1 1^6 1" '> those of the upper third from 7^" to xi^" each 

 way. Basal cells Ym" to 440' loiig> by txbt" broad. 



Trigones, after preparation, more distinct, about -3^5-3" in 

 diameter. 



In Pyrenaica the cells are slightly larger, but resembling the 

 former in shape ; the Malham specimens are occupied by fewer 

 purplish granules, 



Ittflorescence autoicous. Fertile shoots rarely developed, short, 

 lateral, ascending (f. 11, 2). 



Involucral bracts two, double the size of the ordinary leaves, but 

 shorter than the colesule, ovato-oblong, apex emarginate, and like 

 the margins recurved and repand ; base erect, appressed. 



Colesule (f. 11, 6) \" in length, obovate, compressed, ventricose 

 at the base, mouth broad, obliquely rounded, bilabiate, curved to one 

 side, irregularly crenulate-lobate. In var. more acutely dentate, 



Calyptra campanulate, hyaUne-reticulate, surrounded at the base 

 by barren pistillidia. 



Capsule rather small, oval, dark brown, valves 4, ovate, 



Pedicel 'Vfh.iie, succulent, about double the length of the colesule. 



Spores TTFo" i"! diameter, roundish, reddish-brown, granular. 

 Maters bi-spiral, y^" to -xrj" by ■^^^' . 



AndrcBcium, terminal or interrupted (f. 11, 2, central shoot), 

 spicate, either arising from the same stems as the fertile shoots, or 

 distinct. 



Ferigonial leaves srnaller (f. 11, 7), closely imbricated in two 

 rows, so as to hide the stem, very convex, bi-lobate, ventral lobe 

 roundish-ovate, entire, saccate at the base; dorsal much smaller, 

 obliquely ovate, incumbent. Dr. Spruce describes var. 3, " folia 

 lobulo involuto spinuloso, vel laciniato-dentato, stamina obtegente 

 prsedita." 



Antheridia usually solitary (f. 11, 8), globose, dark-green, sur- 

 rounded by a layer of larger tabular cells ; stipes slender, jointed, 



Obs. — In July 1857 I collected at Gordale, Malham, a form whict I submitted 

 to my friend Dr. Gottsche, who thought it probably distinct, and which was described 

 in Myall & Ccurringtoris Flora of the West Riding, p. 88 (1862), under the name of 

 Jung, polymorpha. 



At that time I waa not acquainted with Flag. Pyrerudca, Spruce. The shoots 



