44 



Species. 



107. S. a?erawj»e/wja. ...Ramose; with ovate incised fronds, 



with a tow-Hke incrustation. 



108. — juniperina Ramose; fronds with the fibres 



arranged like a lattice work. 



109. — raphanus Substance like tow, and porous; 



with ovate frond-like lobes, 

 with longitudinal grooves and 

 wrinkles on both sides 



110. — jnesenterina With broad lamellae, plaited in 



winding forms. 



111. — leporina Frondose ; deeply fringed; di- 



lating and sublobated towards 

 the apex. 



112. — laciniata Frondose; with many erect, ag- 



gregated, jagged, lyre-formed 

 lamellae. 



113. — frondifera Slightly ramifying, with roundish, 



proliferous lobes, the limb fim- 

 briated with curled fibres. 



114. — Jimbriata Slightly ramifying, with ovato- 



subrotund fronds, the limb fim- 

 briated with curled fibres. 



VII. Branched masses, phytoidal or dendroidal ; the rami- 

 fications distinct. 



115. S. arborescens Ramose; branches subcompres- 



sed ; apex palmated ; digitiform. 



116. — virgultosa Branches roundish; with erect 



twigs, rather pointed. 



117 — longieuspis Base, a trellisse formed of five or 



six meshes ; whence rise from six 

 to nine straight long branches, 

 sometimes coalescing, forming 

 thin digitations or long points. 



