BY L, ROD WAY. 63 



f. suhmersa. — Dark, 4-5 cm. long, linear, with numer- 

 ous short lateral branches, most of which are divided into 

 many short, deciirved, subterete pinnules. 



Adamson Peak, in pools. 



Aneura polymorpha, Col. — Very variable in shape. 

 Procumbent, flaccid, broadj thin, and dark green. Branch- 

 ing very varied in shape and breadth, procumbent or erect, 

 often 5 cm. long, flat and thin, seldom more than 5 cells 

 thick in the middle ; margins thin, but not winged. 

 Calyptra small. 



About Hobart. Possibly introduced. New Zealand. 



Keadily distinguished by its flat, thin structure. 



Aneura dentata, St. — Dark. Procumbent, flat or con- 

 cave dorsally, robust, with many broad, short lobed 

 branches, mostly 3-4 cm. long, 5-7 mm. wide, apices obtuse, 

 witJi broad obtuse marginal lobes, 7-10 cells thick in the 

 middle, margins acute, with one to many series of enlarged 

 round or elongated, transparent cells. In the typical form 

 the "margin everywhere, especially at apex, coarsely den- 

 tate, teeth remote, piano-conic, acuminate, 2-4 cells long.'" 



Mt. Wellington. Blue Tier. New Zealand. 



Very close to A. colensoi, but with a smooth surface 

 and distinct margin. 



Aneura colensoi, St. — Procumbent, robust, mostly 2-3 

 cm. long, tough, fleshy, with numerous short, broad 

 branches, branches 2 mm. wide, bearing many rotund, rarely 

 lengthened pinnules; margins obtuse, about 6 cells thick 

 in the middle ; surface thickened, covered with short, acute 

 papillae. 



Mt. Wellington. New Zealand. 



Tlie non-bordered obtuse margin and armed cuticle 

 distinguishes the species. 



Aneura. stolonifera, St. — Very variable, robust, 6-8 

 €m. long to small, den&ely caespitose and under 1 cm. Base 

 btoloniferous and terete, branches long or short, ascending 

 or erect, flat, thick, and expanding to a broad, crenate 

 apex, middle 10 cells thick, margin acute, marginal cells 

 large, minutely lamellate, and often also minutely papil- 

 late. Calyptra narrow, clavate, 6 mm. long, inserted on 

 the terete base. 



Very common. Also throughout the Southern Hemi- 

 spliepe. 



Distinguished by the enlarged striate marginal cells. 



