40 



COMPAEATIVE TAP.LE OF SPECIES 



Species. 



T. antarctica, 

 Valenciennes. 



Appearance of Axi.s, branched Axis, Shape and ( Axis, Texture 

 Cohmy. or not. Colour. and Flexibility. 



Bottle-brush- 

 shaped. 



r. («///« (■», Wright 

 and Studer. 



Bru-sh-like. 



T. variabilis 

 (type),Wright 

 and Studer. 



T.variabilis,va.T. 

 brevisjmwsa, 

 Wright and 

 Studer. 



T. variabilis, Finely ramified, 

 var. (jracilis. 



Writjht 

 Studer. 



and 



Branched. 



Not branched. 



Twigs branched. 



T h u a r ell a 

 brucei, Thoiii- 

 s o n a n il 

 Ritchie. 



T. m osele, y ■/, 

 Wright aud 

 Studi-r, var. 

 spivala, n. 



Creamy - wliile 

 colour; 

 liushj'. 



Branches arise 

 in three direc- 

 tions, twigs 

 f r o 11 

 sides 

 gular 



all ] 

 irre- i 



Branches arise 

 on the two 

 lateral faces, 

 not strictly 

 alternate. 



Oval and 

 twisted in a 

 spiral, yellow. 



Oval twisted in 

 a long spiral, 

 then a second 

 spiral begins, 

 yellow. 



Elongated oval, 

 brownish- 

 yellow. 



Cylindri cal ; 

 tawny brown, 

 with at places 

 a yello'\\ish 

 sheen, honey- 

 yellow in 

 twigs. 



Cylindrical, 

 with loiKjitii- 

 dinal ridges 

 and yrooves. 



Horny, calcare- 

 ous, Ijrittle. 



Hard, brittle, 

 but flexible 

 near the tip. 



Horny, calcified, 

 firm, brittle 

 below, flexible 

 above. 



Firm, brittle, 

 and calcareous 

 below, becom- 

 ing horny and 

 flexible above. 



Horny and 

 calcareous, 

 almost ijiflex- 

 ililc, but twigs 

 very flexilile. 



Hard and tougli, 

 with a darker 

 portion in the 

 centre ; only 

 slightly flex- 

 ible. 



Iridescent or 



not. 



Golden lustre. 



Iridescent and 

 golden lustre. 



Slight yellowish 

 sheen. 



Iridescent. 



