Cdllittiamnion. CERAMiEiiii. 15 



23. C. Welwitschii (J. Ag. niscy.) nana villo denso investiens 



intense coccinea, filis tenuissimis coccineis flexuosis mollibus 



vage ramosis, ramis inferioribus longioribus, superioribus 



sensim brevioribus longe seriatis subsecunclatis, apice lon- 



gius producto nudiusculo, articulis inferioribus dianietro 



3plo, ramorum sesquilongioribus ad genicula contractis 



sphserosporis . . . Callith. DaviesH Wehv. Fliyc. Lus. n:o 



182 (non alior). 



Ad algas parasitica in Tago salso. 



Species insignis colove intense coecineo et filis flexuosis mollibus 

 a C. Virgatulo, cujus fere liabet raniificationem, nullo negotio distin- 

 guenda. C. mesocarpum Harv. est rupicola, minus ramosa atque arti- 

 culos habet alios. 



II. SPECIES OPPOSITE AUT YERTICILLATIM PINNAT.E. 



Sfp^nus caulesccntes plumis typice oppositis ohsitce; nunc 

 plmna in ramnin cxcrescente adparenter vaye ramosce ; plunue 

 aut iterum iterumque raniellis db eodeni articulo geminis oppo- 

 site exeuntihus decompositce, aut singulis rameJlis ah articulo 

 provenientibus adparenter alterne ramulosce. 



4. Plumje, repentes aeaules, ne^npe filis primariis dccum- 



bentihus, secundariis erectis, inferne simpliciusctdis 

 aut vage divisis, superne saltem plumosis, plumce 

 pinnis ex eodem articido rachidis geminis oppositis 

 disticMs aut tetrastichis, superiorihus breviorihus, 

 sphcBrosporis triangtdc divisis Sp. 24 — 27. 



5. Cruciat^, erectiuscidce caulescentes opposite pinnatce. 



distichce aut tetrastichce, pinnis cuni rachide decus- 

 satis mollibus, inferioribus patentibus, supremis scepc 

 conniventihus, ramos quasi occllatos terminantibus, 

 sphcBrosporis cruciatim divisis. Sp. 28—31. 



6. Flaccid^. erectiusculce pinnatim deeompositce, 2^innis 



ramisque sub-eonformibus quoquoversum (?) exeun- 

 tihus, pinnidis rami superiorihus breviorihus, sphce- 

 rosporis triangule (?) divisis. Sp. 32. 



7. Plumulat^, repentes aut erectiusculce et caulescentes 



opposite pJumulatcE, pinnis nempe aut duahus op- 

 positis distiehis, aut 3 — 4 ex eodem articulo demum 



