1746 Eu-Floridefe, Corallinacese, Lifiothamnioii. 



Heydr. iii Ber. d. deut. bot. (ies. 1897, p. 91, t. III, f. l-"i partim. 



— Fronde crustacea, 2-() mm. alta, 1 mm. crassa, matricem pliis 

 minus late obtegente, promineutiis singulis apice fungiformi-am- 

 pliatis; tetrasporangiis in soros collectis (tegmine canalibus 8 per- 

 tuso), 120« 48. 



Hah. ad conciias pr. <v B'alse Hay» Capitis F>on;e Spei (Maiiloth). 



— forma plicata Fosl. Rev. Syst. Surv. of Melob. (1900) p. 14: 

 ramis plus rainus plicatis, regulariter fastigiatis et insimnl subcon- 

 fluentibus; tegmine sori canalibus 30-10 intersecto. Ad Caput Bonse 

 Spei (FosLCE). 



45 Lithothamnion superpositum Fosl. Ncw or crit. calc. Alg. (1000) '^'''^''^ 

 p. 8. — Fronde crustas irregulares (plures invicem superpositas) 

 efformante, ramis brevibus, simplicibus irregulariterve divisis, no- 

 dulosis, circiter 2 millim. crassis, apicibus rotundatis; conceptaculis 

 sporangiferis ad ramos subconfertis, prominulis, centrali parte 

 depressis. 



Hah. ad Caput Bon;e Spei Afric« australis (f).' H. Beckeh). — 

 Crusta basi fere 2,5 cm. diam. a^quans, 2-2,6 cm. alta. Concepta- 

 cula sporangiorum 400-500 \i.. diam metientia, tegmine canalibus 

 subtilibus fere 25 percurso. (^ellulse contextus ramorum superiores 

 12-20 * 7-10. 



4(i. Lithothamnion obtectulum Fosl. Syst. Rev. Siirv. of Melob. (1900) ^~"0 

 p. 14, Litholhamnion kerguelenuni (l)ick.) f. ? obtectula Fosl. 

 Some new or crit. Litliotli. (1898) p. 10. — Fronde anibitu sub- 

 orbiculari, levi, demum irregulari, tota inferiori parte matrici adiiata, 

 medio 1,5 mm. crassa, versus margines dentatos irregulariterve 

 lobatos subtiliore, superficie irregulari quasi verrucosa seu undu- 

 lata; conceptaculis sporangiferis plerumque versus margines crustse 

 confertis, parumper prominentibus; conceptaculis carposporiferis 

 s?ppe intermixtis, conoideis, poro singiiio pertusis. 



Hah. ad conclias Mytili lapidesque ad littora insuhe « Ker- 

 guelen » (^H. (jundehse\). — Conceptacula sporangifera 300-350 \y. 

 diam. aequantia, tegmine canalibus circ. 80 intersecto. 



47. Lithothamnion macroblastum Fosl. On some Litboth. (1897) p. 1(3. 2771 



— Crusta irregiilari, 1-5 nu. diam., fere 1 cm. crassa, adfixa, dein 

 crustas secundarias super[)Ositas monstrante, excrescentiis nunie- 

 rosis, verruciformibus, partim confluentibus, plerumque 2 mm. 

 diam. cequantibus; coiiceptaculis sporangiferis prsecipue in excre- 

 scentiis dense confertis, saepe ob confluentiam angulatis, heini- 

 spha^ricis aut subhemisphairicis, centrali parte magiia profunde 



