1923] Pearson: Notes on a Collection of New Zealand Hepaticae 309 



In M. suhandina the appendages are usually smaller, ovate acute, 

 not longly acuminate, with only a few teeth (2 or 3), not 10 to 12, 

 which are large and often hamate. 



The median scales to which the appendages are attached in 

 31. suhandina and in all other species I can remember examining have 

 an entire margin; in M. SetchelUi they are distantly and shortly 

 dentate. 



In all the exhaustive particulars given by Evans of Marchantia, 

 1 have not seen such a character noted. 



No description of cupules of 31. suhandina is given by Dr. Spruce 

 (Hep. Am. et An., p. 561, 1884) for the simple reason, I suppose, 

 that he could find none. I have examined a considerable number 

 of fronds in the specimens distributed by him, with the same result. 



No species from New Zealand is listed by Stephani in his Sp. Hep. 

 to which I can refer 31. Setchellii. 



31. Berteroana L. & L. is recorded bv Evans from New Zealand, 

 "W. A. Setchell, North Island, 1904, no. 32"; I have not received 

 this packet from Setchell. 



Riccardia marginata (Colenso) comb. nov. 



Plate 84 



Aneura marginata Colenso, Trans. Xew Zeal. Inst., 1885. Stephani, Sp. 

 Hep., Bull. Herb. Boiss., p. 259, 1899. 



Dioicous. Small ; brown in color ; corticolous ; densely and intri- 

 cately caespitose. Fronds irregularly furcate, 10 cells wide, 5 cells 

 thick at the middle, cortical cells very small, 40 ; plano-convex winged, 

 wings composed of one row of single cells, very distinct ; branches 

 plane or slightly plano-couA'ex, two cells thick at the middle; apices 

 retuse or emarginate. Calyptra cylindrical, short, apex papillose, 

 cuticle with few (5 or 6) conical tubercles; a cross-section disclosed 

 a peculiar feature, the calyptras are slightly compressed with 6 cells 

 thick at two sides, 2 to 4 cells thick at one side and one cell thick at 

 the other. Spores minute, greyish-brown, angular, smooth ; elaters 

 reddish-brown, mono-spiral, 8 to 10 turns. 



Dimensions. — Fronds 14 to V^ inch long; .8 mm. wide, .25 mm. 

 thick at the middle ; branches .75 mm. wide, .125 mm. thick at the 

 middle; marginal cells .04 mm.; calyptra 1.6 mm. X -7 mm.; capsule 

 .7 mm. X -5 vara. ; spores .0075 mm. ; elaters .15 mm. X .01 mm. 



Hahitat. — Kahikanui near Whakapara, North Island, New Zea- 

 land. Coll. W. A. Setchell, July 8, 1904. 



Ohservaiions.- — Agrees well with Stephani 's description of Aneura 

 marginata Colenso. 



