HANDBOOK OF BRITISH HEPATIOE. 



175 



Stems procumbent, branched. Leaves scarcely 

 overlapping, embracing the stem at their base, 

 roundish or oblong, concave, and not toothed at 

 the margin. Calyx terminal, obovate, plaited at 

 the apex. Leaves more distant, 

 concave, broader and rounder than 

 in Aplozia pumila, with larger cells 

 (fig. 129). It may be distinguished 

 from A. pumila, with which it was 

 long confounded, by the paler 

 colour, larger size, the leaves more 

 distant, amplexicaul, more con- 

 cave, broader and rounder, their \ 

 cells much larger, the calyx less 

 exserted out of the perichattium, 

 the calyx never acuminate, and the calyx dis- 

 tinctly plicate above. -From Aplozia sphczrocarpa 

 it differs by the larger and more procumbent stems, 

 the calyx plicate above, longer and less wide, the 

 leaves not exactly orbicular, but rather terminating 

 in the figure of a parabola. — Taylor. 



This species varies much in the form of the 

 perianth and leaves, the frontal compression of the 

 perianth is slight, but perceptible. — [Plate 4., fig. 4.9.) 



129. 



Genus 25. JUNGERMANNIA, Linn. 



Involucre small-leaved, perichaetial leaves 

 many times cut, dissimilar to stem leaves. 

 Perianth sessile, erect, terete, inflated, mouth 

 contracted and toothed. Calyptra free, within 

 the perianth. Capsule four-valved, coriaceous, 

 naked. Elaters double, naked, deciduous. — 

 Dumort. Hep. Eur. 68., /. ii., f. 19. 



