( 188 ) 



FAM. 3. — ANTHOCEREAE 160 



60. Anthoceros 160 



61. Notothylas 161 



FAM. 4. — TARGIONIACEAE 162 



62. Targionia 162 



FAM. 5. — mCCIACEAE 165 



Trib. 1, — Sphaerocarpeae 163 



65. Riella 163 



Gi. Sphaerocarpus 164 



6o. Tessellina \6i 



Trib. 2. — Riccieae i6^ 



66. Corsinia 165 



Cryptocarpus Austin 166 



67. Riccia 166 



68. Ricciella 170 



69. Ricciocarpus 171 



Addenda : Fossombronia 173 



Explicatio tabularum 175 



Index systeinaticus 185 



Index Alphabeticus 189 



