BY B. DR. CARRINGTON AND W. H. PEARSON. 1057 



hemispheric laminate scales having a purple waved line at the 

 base. Surface of frond compact, laevigate but bearing minute 

 scattered papillse. Rootlets numerous, papillose within. A cross- 

 section of the frond shows in the upper half the cells arranged 

 in very regular columnar series; below this the structure 

 is chlorophyllose — the investing membrane is composed of larger 

 lozenge-shaped cells. Capsules deeply imbedded in the fronds. 

 Spores slightly punctate, narrowly bordered. 



Mcasiirements. — Plants 10 to 15 mm. long ; segments 4* to 5* 

 mm. broad, 1' mm. thick ; spores -075 to 'Oil mm, diam. 



Hab. — Parramatta, N.S.W., August 1885. 



066\— This appears to be a new and distinct species, and we fail 

 to identify it with any of Taylor's species from New South Wales. 

 In Riccia acuriiinata, Tayl., with which it agrees in form, the 

 margin is entire. Its large size and remarkably firm fleshy 

 ■cartilaginous (when dry) texture might lead one to refer it to 

 Corsinia, or another genus which it resembles in size, but the 

 presence of the immersed capsules at once determines it. 



R. marglnata belongs to the " Squamose-fimbriate" sub-section 

 of Lindenberg, the best-known species of which are R. nigrella^ 

 de Cand., and E. squainata, Nees ; both of these are covered with 

 roundish purple scales which cover each side of the frond, wJiereas 

 the scales of E. marginata are inserted on the same plane as the 

 surface, are whitish, with purple base, and are only inflexed when 

 dry. 



R. Imnellosa, Raddi, is cream-coloured and the scales oblong, 

 white, and inserted a little below the margin, over which they 

 bend. 



R. Jimbriata, Nees, (Mart. Fl. Brazil) appears like ours in the 

 transverse insertion of the scales, but these are in two oval series, 

 and the whole surface is studded with large, hyaline, conical 

 papillte, and the section of the frond cavernous. 



