8 ^TEW OE RARE SPECIES OP TASMANIAN HEPATIC^. 



•02 ; outer bracts, "55 mm long x '5 mm broad ; seg., 'S mm 

 long; marginal notch, "05 mm deep, '7 ><■ '6 ; seg., "4; mar- 

 ginal notcli, '125 ; bracteole, '3 mm long X '1 mm broad. 



Hab., " Ploughed Fields," Mount Wellington, January 1st, 

 1886. 261. 



Obs. — Unfortunately no perfect perianths have been found, 

 so we hesitate as to what genus it should be assigned . 



To none of the already described species can /. Bastovii be 

 referred so far as we are able to say. 



The discoverer, Mr. R. A. Bastow, of Hobart, Tasmania, in 

 whose honour the name is given, and who has already con- 

 siderably added to the list of Tasmanian Cryptogams, sent 

 it as Gymnomitrmm physocaulum, Tayl., but with that species 

 it has nothing in common. 



This is in many respects the most interesting of Mr. 

 Bastow's discoveries ; the short lateral axillary involucre and 

 absence of underleaves distinguish it from any known species. 

 The insertion of the leaves is nearly transverse, but un- 

 doubtedly succubous. 



Description of Plate V. — Fig. 1, plants nat. size ; 2, plant 

 X 16; 3, apex of ^ stem X 16 ; 4, portion of stem x 51 ; 5, 

 6, 7, leaves x 85, flattened out ; 8, portion of leaf x 290 ; 9, 

 10, outer bracts x 57; H^ bracteole x 85; 12, pistillidia x 

 85 ; 13, antheridium x 85. 



[Cesia ekosa n. sp.] 



Monoicous ; loosely ceespitose, pale olive green, rhizomatous, 

 creeping, sparingly branched filiform, fertile stems erect, clavate, 

 leaves very closely imbricate, appressed, erect, ovate or roundish- 

 ovate, entire, retuse or slightly notched, margin hyaline, irregularly 

 erose, crenulate ; cells minute, guttulate ; bracts broadly ovate to 

 cordate-ovate, bidentate, sinus acute, inner bracts 3-lobate, dentate. 



Monoicous. Tufts intricately entangled, of a pale olive 

 green colour. Stems on a cross section about 30 cells in 

 circumference, 10 in diameter, 8 outer rows darker, inner 

 hyaline, rhizomatous, simple or slightly branched, rigid, 

 somewhat flexuose, filiform, flagellif erous ; flagella with or 

 without minute leaves, rooting ; rootlets frequent, short, 

 whitish. Leaves closely imbricated, appressed, erect, ovate, 

 or broadly ovate, retuse, slightly notched or entire, sinus 

 extremely shallow, segments slightly acute or rounded, 

 margin of leaves hyaline, irregularly crenulate or erose ; cells 

 minute, guttulate, quadrate, or 5-6 sided, marginal cells long 

 and narrow, conical or irregular in form. Perigynium on 

 short club-shaped branches ; outer bracts rather larger than 



