600 SoLiERiE^. . Eucheuma. 



** 



Fronde stcrili tcretiuscula, papillis siuc ordiue conspicuo 

 quoquoverswn egredicntihus plurimis instructa. 



2. EucH. HOKRiDUM (Harv. Alg. Telfair ji:o 12) fronde tereti 



subvage ramosa ramis eloiigatis spinulosis, spinulis uu- 

 dique vage egredientibus densissimis minutis conicis. J. 

 Ag. Sp. p. 625. Gigart. Iiorrida Harv. l. c. 

 Ad Insulara Francise. 



3. EucH. ACANTHOCLADUM (Harv. Ncr. Bor. Amer.p. 191) fronde 



tereti inferne incrassata subcoinpressa et a margine ad- 



parenter pinnata, pinnis teretiusculis quoquoversum sine 



ordine egredientibus elongatis vage ramosis in apices te- 



nues subulatos longe attenuatis, inferioribus ramulis ab- 



breviatis spinuliformibus divaricato-submultifidis uuuc 



suboppositis, superioribus elongatis decompositis flexuosis, 



spinulis subulatis. Chrysymenia? acanthoclada Harv. l. 



c. tah. 25! 



Hab. ad oras Floridse (Harvey, C. Melvill!) ad Barbadoes 



(Hb. J. E. Gray!). 



Habitus iiullo modo Chrysymoniee sed potius Eucbeumatis, aut 

 immo Gracilariai cujusdara. In specimiuibus qute vidi, structuram 

 examinavi, et hanc cum quibusdam aliis Eucheumatis speciebus con- 

 gruentem observare credidi. Fila strati centralis laxiora quam in 

 icone Harveyana vidi. Specimina nostra sterilia. 



*** Fronde sterili teretiuscida papillis conicis verticillatis oh- 

 sita, papiUis in cap)suligera numerosiorihus aggregatis 

 fere inordinatis. 



4. EucH. isiT^ORME (Ag. Sp. p. 271) fronde tereti verticillatim 



aut demum adparenter vage ramosa, ramis elongatis quo- 

 quoversum papillosis, papillis verticillatis conicis, demum 

 obtusis aut in limbum circumcirca ambieutem coalitis, pa- 

 pillis in fructifera inter verticillos provenientibus subulatis 

 aut conicis parum ramosis, cystocarpiis infra apicem ses- 

 silibus ovato-globosis. J. Ag. Sp. p. 627. Harv. Ner. Bor. 

 Amer. p. 118 tah. XXIV. Sphcer. isiformis Ag. l. c. 

 Hab. ad Floridam et Insulas Indise occidentalis. 



Species nobilissima, a plexu radicali ramoso surgens saltem usque 

 sesquipedalis, corallini coloris plerumque conservans indicia. SteriHs 

 planta sat regulariter verticillis invicem distantibus papillosa, papilHs 



