PLATE 4.- Algas Florideae. 



Figure 



1. Sporochnus pedunculatus. a, portion of branch ; ft, receptacle ; c, spores and 



filaments. 



2. Dictyota dicTiotoma. a, portion of frond ; ft, sorus ; c, section of the same with 



spores. 



3. Poly ides rotundus. a, frond with warts ; 6, favellidia from wart ; c, section 



of frond and wart ; d, spore. 



4. PhyllopTiora rubens ; 6, spores ; c, a nemathecium ; e, filaments from the same. 



5. Delesseria sanguinea ; ft, spores ; c, a tetraspore ; d, capsule ; 0, branch with 



coccidia. 



6. Nitophyllum punctatum ; &, a tubercle ; c, a tetraspore ; rf, spores. 



7. Microcladia glandulosa ; 6, favella ; c, tetraspore ; d, branch with favella. 



8. Rliodymenia Palmetto, ; 6, portion with sorus ; c, tetraspores ; d, coccidium. 



9. Dasya arbuscula. a, portion of frond ; 6, branchlet with stichidia ; c, a cera- 



midium. 



10. Plocamium coccineum ; 6, branch with tubercles ; c, branch with sporophylls ; 



d, tetraspore ; e, spore. 



11. Rytiphlcea pinastroides ; 6, branch with ceramidia; c, stichidium; d, cera- 



midium. 



12. Nemaleon multifidum. a, spermatozoa adherent to trichogyne ; 6, antheridia ; 



c, carpogon. 



13. Odonfkalia dentata \ b, stichidia ; c, ceramidia ; c?, tetraspore ; e, spore. 



14. Sphcerococcus coronopifolius ; 6, portion with tubercles ; c, a tubercle ; t^, spores. 



15. Bonnemaisonia asparayoides ; b, portion with ceramidia ; r, ceramidium ; 



d, spore. 



16. Ptilota plumosa ; 6, c, favella ; d, tetraspore. 



17. Gigartina acicularis ; b, c, tubercles with favellidia. 



18. Naccaria Wigghii b, swollen ramuli with spores ; c, filaments with spore. 



19. Bryopsis plumosa ; 6, portion of branch magnified. 



20. Polysiphonia fastigiata ; 6, portion magnified. 



21. Catenella opuntia. a, nat. size; 6, magnified 10 diam. ; c, tetraspore. 



