LIST or FAMILIES, GENEEA, AND SPECIES, ETC. 



xxxix 



Family 4. — DICTYOTACE^. — Soft; membranaceous; flat, or thread-sJiaped, 



Spores forming spots or lines on the surface. 



Haliseeis; polypodioides. 



Padiista; Pavonia. 



ZoNAElA; coUaris, parvula. 



CuTLEElA; multificla. 



Taonia; atomaria. 



DiCTTOTA; dichotoma. 



Stilophoea; rhizodes, Lyngbyasi. 



DiCTTOSiPHON; foeniculaceus. 



Steiaeia; attenuata. 



Wyattia;* pusilla, Laminariai. 



AsPEEOCOCCUS; compressus, Turneri, echinatus. 



PuNCTAEiA; latifolia, plantaginea, tenuissima. 



* Formerly Litosiplion pusilhts (Fig. 52), and L. Lammarice (Fig. 53). 



Family 5. — CHORD ARIA CE,^. — Gelatinous; of various Jiahits. Thread-sTiaped ; 



tuber-lilce, or incrustations. 

 Spores on threads concealed in the frond. 



Choeda; filum, lomentaria. 

 Choedaeia; flagelliformis, divarieata. 

 Mesogloia; vermicularis, Grriffithsiana, virescens. 

 Leathesia; tuberiformis, Berkeleyi, crispa.* 

 Balesia; verrucosa. 



Myeionema; strangulans, Leclancherii, punctiforme, clavatum. 

 Elachista; fucicola, flaccida, curta, stellulata, scutulata, pulvinata, velutina, 

 Grevillei,* Haydeni.* 



^ See Appendix of ITew Species. 



Family 6.— ECTOCAEPACEiE.— jfor^ or less soft and slender; thread-sha])ed ; 



jointed. 



Spores external on the branches. 



Cladostephus; verticillatus, spongiosus. 

 Chjetopteeis;* plumosa. 



Sphacelaeia; filicina, Sertularia, scoparia, fusca, radicans, racemosa. 



EcTOCAEPrs; siliculosus, ampbibius, fenestratus, fasciculatus, Hincksise, 

 tomentosus, crinitus, pusillus, distortus, Landsburgii, littoralis, longi- 

 fructus, granulosus, sphseropborus, bracbiatus, Mertensii. 



Mteioteichia; clavseformis, fibformis. 



* Formerly Sphacelaria plumosa (Fig. 72). 



