1018 Eu-Floridefce. Lophotlialiese, Lopliothalia. 



prolongari videntur, unde, spatio superioribus exiguo relieto. te- 

 trasporangia revera admodum pauca (6-8) in singulis stichidiis 

 evolvuutur. Articuli ramorum tenuiorum sunt diametro fere duplo 

 longiores, ramorum uiedioruin diametro sesquilongiores; in ima 

 parte frondis sunt articuli diametro sequales aut breviores. Sectione 

 transversali frondis adparent siphones 4-magni circa centralem 

 niinorem, totidem exterioribus alternantibus duplo tenuioribus cin- 

 cti. Articuli penicillorum iniimi sunt diametro 2-3-plo, superibres 

 6-8-plo longiores. Color penicillorum e carneo roseus. 



LOPHOTHALIA Kuetz. [1849] Sp. p. 7U7 (Etym. lophos crista, juba et 



thaleo floreo), J. Ag. Sp. II, 3, p. 1233 (ut subgen. Dasyce), Till Al- 

 gern. Syst. XI, p. 56 partim, Schmitz Die Gatt. Lophot. (1893) 

 p. 218 (excl. subgen. Doxodasya), Engl. & Prantl Nattirl. Pfian- 

 zenfam. (1897) pag. 448 partim, Falkenb. Rhodomelaceen (1901) 

 p. 534 (non Dasya subgen. Lophothatia Harv. [1847] Nereis au- 

 stralis p. 58, quod diagnosis est inexacta quoad cellularum peri- 

 centralium speciei typicae numerum). — Frons teretiuscula, poly- 

 siphonia, siphonibus 5 circa centralem in orbem dispositis seque 

 longis contexta, hyphis corticata, ramis aut tota fronde longius 

 deorsum ramellosis, ramellis coloratis monosiphoniis sirnplicibus. 

 Cystocarpia ovato-subglobosa intra pericarpium cellulosum carpo- 

 stomio apertum carposporas piriformes iil articulo terminali Jilo- 

 rum a placenta basali radiantium foventia. Stichidia a rachide ra- 

 muli monosiphonii aut polysiphonii plus minus transformata. 

 saepe ramellorum residuis obsita, in articulis tetrasporangia bina 

 subspirali ordine superposita h. e. paribus subsequentibus invicem 

 cruciatim (iispositis et seorsim ssepe prominula foventia. 



Obs. Differt a Doxodasya imprimis pericentralibus cellulis 5 

 (nec 4), a Brongniartelkv speciebus nonnullis siphones pericentra- 

 les tantum 5 prsebentibus evolutione tetrasporangiorum ; sunt eniin 

 in quoque articulo bina in Lophothatia, singula, ut in Lophocla- 

 dia, in Brongniartella. 



1. Lophothalia verticillata (Harv.) Kuetz. Sp. (1849) pag. 707, Tab. msi 

 Phyc. XIV, t. 86, Falkenb. Rhodomelaceen (1901) p. 534, t. 13, 

 fig. 24-28, Dasya verticittata Harv. in Hook. Lond. Journ. 111 

 (1844) p. 434, Nereis Austral. p. 64, tab. XXIV (fig. 5-6 inexactse), 

 J. Ag. Sp. II, 3, p. 1234. — Fronde teretiuscula, pinnatim decom- 

 posito-ramosa, sursum longe corticata, caule ramisque inferne de- 



