1 6 H EPATI CJE. [Jungermannia. 



as given in the Sp. PL, where it was first noticed, is " M. calyce cora- 

 muni integro hemisphagrico," adding " monoica seu androgyna est haec 

 species :" he states it to be a native of Italy and Jamaica, and refers to 

 Micheli, t. 2./. 3, (the authority for the Italian plant,) and to Dill. 

 Muse. t. 75. f. 3, (the authority for the Jamaica plant.) Micheli' s plant, as 

 far as we can judge from the magnified figure, may possibly be that state 

 of the species with sessile male receptacles above noticed as found by 

 Mr. Lyell, and to which, if any, the name androgyna may still be ap- 

 plied ; the female receptacles are equally divided with our M. hemi- 

 sphcerica ; yet the fronds are much longer, narrower, and repeatedly 

 divided in a dichotomous manner. With regard to Dillenius' plant from 

 Jamaica, the fronds are still more unlike ours ; and as is evident from 

 his description and figure, they are furnished with gemmiferous scyphi 

 and not with male receptacles. Now, it appears that Linnaeus' character 

 of M. androgyna was taken from a Siberian plant, described by Scopoli 

 and Smith, under the name of M. triandra, and hence Smith observes, 

 "our great naturalist erred in making its specific character Calyx com- 

 munis integer." To return again to the figs, in E. Bot., there is no male 

 fructification described ; nor, so far as we can discover, any mark by 

 which to distinguish it from M- hemisphcerica. 



Schmidel, under M. hemisphcerica, t. 34. at/. 3, and XIII, has figured 

 and has described what appear to be sessile male receptacles, on the 

 same fronds with the pedunculated ones ; and this would seem to 

 strengthen our opinion of the 2 kinds being found on the same species. 



5. M. irrigua, Wils. (water Marchantid); receptacle of the 

 capsules hemispherical cut at the margin into 5 or 6 lobes, that 

 of the anthers pedunculated with a thickened margin, frond of 

 a very close texture without pores. Wils. Mss. 



In dripping places; Turk Cascade, near Killarney; Maghan^bo Glen, 

 near Brandon mountain ; Ballihasig Glen, near Cork ; Mr. Wilson. Fr. 

 Apr. May. — "Fcm. receptacle hemisphaerical, 5 — 6 rayed, each ray slight- 

 ly split for the protrusion of the capsule. Filaments very long, thickened 

 in the middle, seeds small. Male receptacles stalked, peltate, flattish or 

 sometimes pitted in the centre, not bordered as in M. hemisphcerica. 

 Frond of a wavy dark green, of close texture without pores, furnished 

 with a sort of midrib, covered beneath with silky radicles." — The shape 

 of the antheriferous receptacle, Mr. Wilson observes, and the texture of 

 the frond, seem chiefly to distinguish this from M. hemisphcerica -, the 

 latter character is indeed quite visible in the dry state ; and both in 

 colour and texture the fronds look more like those of Jungermannia 

 epiphylla than of any British Marchantia. 1 possess what appears to be 

 the same species from Madeira and other southern countries. 



6. Jungermannia. Linn. Jungermannia. 



Common receptacle of the fruit none. Perianth or calyx 

 monophyllous, tubular, sometimes double, rarely wanting. 

 Capsule 4-valved, terminating a peduncle, which is longer than 

 the perianth. — Named after Louis Jungermann, a German Bo- 

 tanist. 



