MARINE BOTANY. 30 



Family V.— JEctocaepe^. 



Marine plants of an olive -green, very rarely of a full 

 green oolour; filamentous: often capillary or cobwebby, 

 jointed, cartilaginous, or flaccid ; not very juicy. — Harvey. 



XXV. Cladostephus. A branch and crown. 



1. VerticiUatus, whorled cladostephus. 



2. Spongiosum, spongy. 



SPHACELAEIA PLUMOSA. 



XXVI. Sphacelaria. Gangrene, alluding to tne withered 

 tips of the branches. 



1. Felieina, fern-like sphacelaria ; 



2. Serlutaria, clover-like. 



3. Scop>aria, clustered. 



4. Plumosa, feather-like. 



5. Cirrhosa, the tendril-bearing, 



6. Fuca, coloured. 



7. Radicans, rooted. 



8. OUvacea, olive. 



9. Racemosa, clustered. 



