BY L. RODWAY. 65 



Aneura pahnata {Heche), Bum. — Bright green, trans- 

 parent, in pulvinate masses. Primary shoot decumbent, 

 Hat, 2-3 cm. long, 2-3 mm. wide, alternately pinnate, 

 pinnae very short, obtusely lobed, branches erect, simple, 

 linear, 5-10 mm. long; ultimate pinnules 0.3 mm. wide and 

 generally numerous and equal, margin obtuse, about 8 

 cells thick in the middle; cortical cells 50 x 33 ^., medul- 

 laries 80-120 ^x. Organs of reproduction on the sides of 

 the expanded branches. Antheridial ovate-cylinclric, ped- 

 unculate. Calyptra stout, papillate, 3 mm. long. 



Common. Cosmopolitan. 



Aneura minima {Carr et Pear), St. — Very small, in 

 dense cushions. Trunk stoloniferous, much branched, 

 branches ascending pinnate, about 5-10 mm. long, 0.3 mm. 

 wide, linear, biconvex, 4 cells thick in the middle, margin 

 acute of 2-3 series of colourless cells, more or less crenate. 

 Calyptra clavate, 1.3 mm. long, apex with a ring of long 

 pilose hairs. Cortical cells not smaller than the medul- 

 laries. 



Mt. Wellington. East Australia. 



Aneura gracilis, St. — Verv small, in dense cushions, 

 under 1 cm., the branches mostl}^ about 5 mm. long and 

 0.4 mm. wide, trunk and branches linear, nearly flat, all 

 similar, 3-5 cells thick in the middle, margins subacute, 

 not winged, cells all equal. Calyptra 2 mm. long, with a 

 ring of pilose hairs at the apex. 



Very common. 



Aneura yerim^iUa, Col. — Minute, appearing like a 

 layer of green plush. Shoots 2-5 mm. long, 0.4 mm. wide, 

 convex on the dorsal, flat on the ventral surface, 3-5 cells 

 thick in the middle, margins acute, but not winged, cells 

 all similar. Calyptra cylindric, 1-2 mm. apex with a ring 

 of pilose hairs. 



Probably Stephani's A. gracilis is but a rather larger 

 form of this. 



Mt. Wellington. New Zealand. 



Metzgerta, Raddt. 

 Membranous, linear, dichotomously dividing ; midrib 

 slender, very distinct, of narrow elongated cells, w^ithin a 

 large celled sheath ; wings broad, one cell thick ; margins, 

 under surface and midrib, more or less bearing single or 

 geminate bold hairs. Reproductive organs on small, spe- 

 cial branches, arising from the ventral surface of the mid- 

 rib. Perianth absent; calyptra thick, clavate or pyriform. 



