322 Eu-FI()ri<le?e, Cy»tocIoiiiea3, Agardliielln. 



AGARDHIELLA Schmitz [1889] Syst. Uebers. Florid. p. 7 (Etym. ab 

 ilkistri phycologo suecico Jacobo Georgio Agardh), Engi. & Prautl 

 Natiirl. Pnauzeufam. 142 (1896), p. 371, fig. 222 E, Rhahdonice, 

 Gigartince, Solieria^, Sphcvrococci, Halymenio! sp. auct. — Frous 

 teretiuscula, quo<iuoversum rauiosa, superne subtubulosa, laxiuscu- 

 la; structura celluloso-fjhimentosa, filis medullaribus reticulathn 

 anastomosantibus, plus minus laxis, cortice introrsum grosse, ex- 

 trorsum minutissime cellulosa. Cystocarpia per frondem sparsa, 

 omnino immersa aut paullulum prominentia, nucleo transverse ovah 

 aut subgioboso rotundato, ad stratum medullarem aut ad corticis 

 interiorem partem laxam disposito, unilateraliter cortici exteriori 

 parvicellulari aflixo, tegumento filamentoso denso subdiscreto ob- 

 voluto, medio cclluloso, fihs carposporifcris radiantibus, carpospo- 

 ras singulas apice gerentibus. Tetrasporangia per frondis superfi- 

 ciem sparsa, zonatim divisa. 



1. Agardhiella tenera (J. Ag.) Schmitz loc. cit., RJmhdonia tenera ^-^.ri 

 J. Ag. Sp. p. 351, Epicr. p. 592, Osterhout in .\unals of Botany 

 1896, p. 403, t. XX-XXI, Gigartina tenera J. Ag. Symb. p. 18, So- 

 lieria chordalis Harv. Ner. Bor. Amer. p. 121, t. 23 A (excl. syn.) 

 eximie (non Ag.). Rhahdonia Baileyi Harv. in Kuetz. Tab. l^hyc. 

 XYI, tab. 74, Sphcerococcus tener Kuetz. Sp. p. 777, Halymenia 

 ramosissima Suhr in Flora 1840, pag. 275?. — Fronde tota fiU- 

 fornfi, decomposito-ramosissima, ramis subalterne aut secunda- 

 tim virgatis quoquoversum egredieutil)us, cylindraceis ramulisque 

 basi constrictis apice elongato-acuminatis; cystocarpiis unihxterali- 

 ter prominulis, per ramos ranuilosque mamillteformiter infiatos 

 spar.sis. 



Hah. in oceano Atlantico calidiore ad Americam borealem et 

 insulas India? occidentalis. — Frons a radice fibrosa surgens, ca^- 

 spitosa, 8-11 cm. longa, decomposito-ramosissima, raniis pinnatim 

 egredientibus sursum brevioribus, basi eximie constrictis, dein sen- 

 sim inflatis, diametrum 2,2mm. fere attingentil)us,apice iterum longe 

 acuminatis. Cystocarpia in ramis hinc inflatis demersa, subliemi- 

 sphgerice prominentia, nucleo fifis undi^iue ambientibus ciucto, in- 

 tra pericarpium cellulosum apice pertusum. Tetrasporangia in ra- 

 nufiis nidulantia. Stratum exterius frondis in juvenili planta iinica 

 ferc serie cellularum constat; demum series augeri videntur, ita ut 

 (hiplici aiit triplici strato tubus iii nonnullis cingatur; fila elongata 

 anastomosantia longitudinaliter tubum percurruut. Substantia juve- 



