160 MIDDLESEX ELOEA. 



MiCRASTEKIAS, Ag. 



M. truncata, Brfb. 



M. truncata, Br6b., var. minor, WoUe. 



M. depauperata, Nordst. 



M. dichotoma, WoUe. 



M. muricata, Ealfs. (Euastrum muricatum, WoUe, Desm.) 



EUASTEUM, Kalfs. 



E. ventricosum, Lund. 



E. pinnatum, Ealfs. 



E. inerme, Lund. 



E. Wollei, Lagerheim (E. intermedium, WoUe, Desm.), var. 



quadrigibberum, Lagerheim. ^^ 



E. compactum, WoUe, var. major, Lagerheim. 



COSMARIUM, Ealfs. 



C. ornatum, Ealfs. 



C. orthostichum, Lund. 



C. orthostichum, Lund, var. trigonum, Lagerheim. 



C. Lagoense, Nordst. 



C. Willei, Lagerheim. 



C. Portianum, Arch., var. Brasiliense, Wille. 



C. Pardialis, Cohn. 



C. quinarium, Lund. 



C. quadrifarium, Lund. 



C. excavatum, Nordst. 



C. subcruciforme, Lagerheim. 



C. WoUeanum, Lagerheim (C. pseudogranatum, WoUe, Desm.)» 



subspec. granuliferum, Lagerheim. 

 C. taxichondrum, Lund. 



C. taxichondrum, Lund, var. bidentulum, Lagerheim. 

 C. pseudotaxichondrum, Nordst., subspec. trichondrum, 



Lagerheim. 

 C. pseudotaxichondrum, Nordst., var. quadridentulum, 



Lagerheim. 

 C. polymorphum, Nordst. 

 C. oculiferum, Lagerheim. 



C. moniliforme, Ealfs, forma elliptica, Lagerheim. 

 C. Americanum, Lagerheim. 

 C. pseudopyramidatum, Lund. 

 C. Cambricum., Cooke & Wills. 

 C. octogonum, Delp., var. constrictum, Lagerheim. 



