274 HEPATIC^. 



Description of Plate CXII. — Fig. 1. Plants natural size. 

 2. Plant, antical view x 24. 3-8. Leaves x 31. 9. Portion 

 of leaf X 290. 10-12. Stipules x 85. 



2. Plagiochila asplenioides (Z.), Bum. 



Lichenastriim asplenii facie, pinnis laxioribus (et confertiorihus), Dill. Hist. muse. 



p. 482, t. 69, f. Set G (1741). 

 Jungermania asplenioides, L. Sp. pi. p. 1595 (1753). 



Radida [Plagiochila) asplenioides, Duai. Syll. Jung. Eur. p. 42, n. 28 (1831). 

 PlagiocJdla asplenioides, Dum. Recueil. p. 14 (1835). 



Dioicous, csespitose or creeping amongst mosses, from medium 

 to very large in size, of a pale green to greenish-brown colour. 

 Creeping stem or caudex firm, blackish ; radiculose on the under- 

 side, leafless or with few small leaves, ascending stems pale brown, 

 rootless, or rootlets very few, but long, apex often recurved, ramose, 

 branches lateral, subpostical, arising from the axil of the leaves. 

 Lower leaves small and distant, others large, contiguous or sub- 

 imbricate, succubous, obliquely inserted, patent, alternate, de- 

 curved, slightly concave, postical margin recurved, postically 

 decurrent, much decurrent antically, ovate, obovate or suborbicular, 

 apex rotundate, ciliate-dentate, dentate, subdentate or entire, teetli 

 acute ; texture thin to moderately firm, epidermis smooth, cells 

 medium size to rather large, hexagonal, vacuous or with the 

 chlorophyl granules lining the margin, walls thin, trigones 

 wanting or very minute. Stipules absent or rudimentary only. 

 Bracts similar to upper leaves only larger, erect. Bracteole 

 wanting. Perianth projecting about half beyond the bracts, 

 tubular at the base, laterally compressed, long, oblong obovate, 

 mouth truncate, wide, ciHate-dentate, cilia 3-4 cells long at the 

 most, usually only 2, apical ones acute, pistillidia 12-25. Pedicel 

 long. Capsule oval, spores smooth or finely punctate, yellowish- 

 brown, elaters reddish-brown. 



Male stems distinct, $ terminal, perigonial bracts about 5 

 pairs closely imbricating, semi-amplexicaul, small, obovate, saccate 

 at the base, basal margin a little incurved, slightly lobulate, 

 antheridia oval to roundish, 2 in each bra.ct. 



