46 



Species. 



131. S. selaginea Compressed, ill-formed branches ; 



with frequent spinous keel-like 

 ridges. 



132. aspericornis . ...Rather round, elongated, and acu- 



leated branches. 



133. hispida Ramose, ill-formed, hispid, with 



subulated jags. 



134. serpentina Round branches, the smaller con- 



torted in various directions. 



135. oculata Compressed, roundish, with bifid 



and trifid ascending branches, 

 with eye-like openings. 



136. botellifera With erect, tuberculated, grooved 



and ill-formed branches. 



137. palmata Branched and palmated ; digiti- 



form smaller branches, with 

 forked terminations. 



138. lanuginosa Dichotomously branched, rather 



compressed previously to being 

 divided ; woolly, and formed of 

 very fine naked fibres. 



139. typhina Ramose; with round, erect, 



woolly branches. 



140. tupha Ramose; with cylindrical obtuse 



omentiform branches. 



141. fornicifera With flat, small villous ramifi- 



cations coalescing in a vaulted 

 lattice. 



142. semitubulosa....With numerous cylindrical and 



tortuously divaricating branch- 

 es, some tubular and pierced. 



143. alicornis With many stems ; branches com- 



pressed and subdichotomous ; 

 the apices attenuated ; the fi- 

 bres minute. 



