402 Eu-Florideze, Sphierococceze, Heringia. 
alternis, aliquando oppositis; recentes membranaceo-subcarnosce 
purpure:, exsiecatze cartilagines. Triplici fere strato constituuntur. 
"Costa tubo singulo. efficitur, axin frondis percurrente, longius arti- 
culato, endochromate in madefaecta lutescente. Hune tubum cingunt 
cellule oblong:e strati intermedii, granulosà substantià farcte, in- 
teriores longiores, exteriores breviores rotundat:e. Periphericeum 
stratum cellulis minutis, in fila moniliformia verticalia seriatis. | 
contextum est. Cystocarpia infra apicem segmentorum lateralium 
singula aut s:epe (in furcatis) bina, rostro brevi plerumque mucro- 
nata, subsph:erica, diametrum frondis circiter :equantis; pericar- 
pium cellulosum, stratis exterioribus frondis contextum est, initio | 
clausum, denique, ut videtur, poro oblique terminali apertum. Pla- 
centa centralis, a tubo costi formata, clavata, ultra medium cy- 
stocarpii extensa, fila carposporifera numerosissima emittens; ear- 
pospor: in filis subelavatis a placenta quoquoversum radiantibus 
format: et seriat:e, terminales pracoeiores, inferiores sensim minus 
evolut;ie et angustiores. Tetrasporangia in segmentis terminalibus 
congesta numerosissima, peripherieo strato aliquantulum mutato 
cireumeirca immersa, oblonga, zonatim divisa. J. Ag. Sp. II, p. 657. 
— merge ule tmm i re n m dt i m 
1. Heringia mirabilis (^g.) J. ^g. Alg. medit. p. 68 in not, Sp. II, 747 
p. 638, Epicr. p. 438, Florid. Morphol. t. XXVI, fig. 6-7, Harv. 
Nereis. australis tab. 50, SpA«rococeus mirabilis Ag. in Diss. de 
metamorph. Alg., Icon. Alg. ined. tab. 7, Sp. Alg. p. 291, Syst. 
pag..230, Gelidium mirabile Harv. Gen. South Afr. Pl. sub n. 
XXVII, Kuetz. Tab.,Phyc. XVIII, tab. 61, Spherococcus rostra- 
tus Ag. Sp. Alg. p. 954, Syst. p. 218, Kynchococcus? rostratus | 
Kuetz. Sp. Alg. p. 755, Fucus subverlicillatus Mert. mser., Spha- 
rococcus confervicola Cham. in Verh. der Ges. Naturf. Fr. Berlin 
I, 3, p. 177, t. 5, Rudolph. in Linn. 1831, p. 175, Gelidium  con- 
fervicola Kuetz. Phye. gen. p. 406 et Sp. Alg. p. 7607; —.Enonde 
subsetacea, :quali, dichotomo-decomposita, segmentis alterne bre- 
vioribus, lateralibus terminalibusque flabellato-fastigiatis. 
Hab. ad Caput Bon: Spei Afric: australis (DE-LA-LANDE, CHa- 
MISs0, GaupricHAUD, HanvEy, PaApPPE) in Cladophora hospita, 
Spongiis etc. — Frons 2-10 cm. alta, crassitiem penn: passe- 
rine non :zquans, inferne teretiuscula, superne complanata, ra- 
mosissima, ramificatione dichotoma, erecto-patenti, nune tota fla- 
bellato-fastigiata, nune segmentis alternis utrinque brevioribus al- 
terne ramosa, rarius segmentis oppositis instructa. Cystocarpia dia- 


