616 SIMI.EROOOOCOIDE/E. Thysaiwcladia. 



1. In. DOBSIFERA (Ay. sp. I. p. 3723 IVomle pinna distiche dccom- 

 posito-pinnata, pinnis adproximatis alternis, basi atlenuala in- 

 togriusculis, siipernc serratis lincaribus, serraturis a basi laliori 

 subito attenuatis acntis, coccidiis infra apicos pinnarum in al- 

 torutra pagina 3 4 aggregatis. 



Rhodomela? dorsifera Ag. I. c. ! Sysl. p. '197! 



Mammea dorsifera J. Ag. Symb. 1 p. 22 ! 



Thysanocladia dorsifera Endl. Suppl. III. p. 44! Kiilz. sp. p. 769! 

 Harv. Ner. auslr. tab. XXXV! 



Lenormandia dorsifera Mont, in Ann. Sr. Nat. Mars. 1844. PI. 11. 

 fig- 2! 



Hab. ad oras Novae Holland!.? (Mils. Paris!) 



Frons spitharna?a tripinnata, pinnis in supcriore parle creberrimis 

 vix lineam distantibus, alternis, a margine jugamenti plani Imeam lali 

 distiche egredientibus; inferioribus compositis, ima basi angustioribus et 

 integriusculis, superne serratis, apice pinnulatis-, superioribus pinnulas <emu- 

 lantibus simpliciusculis. Pimiula? semipollicares, serraturis crebris incise. 

 Infra apices pinnulanim ooccidia in pagina plana proveniunt, 2 ft agglo- 

 merata. Color ferrugineo-purpureus. Substantia niemhranacea. 



2. In. CORIACEA (Sond. Eot. Zeit. 18 i5 p. :i6) fronde plana distiche 

 decomposito-pinnata, pinnis adproximatis suboppositis composito- 

 pinnatilidis, serraturis obtusiusculis, rocoiiJis. . . . 



Sphajrococcus coriacous Sond. t. c. et Afg. Frciss. ;/. 4;j. 



Thysanocladia? coriacoa Ilnrv. Ner. Auslr. p. v)0 lab. XXXVI! 



Rhynchococcus coriaceus /iw/:.. Uot. Zeit. 1847 p. 23 Sp. Atg. p. 755! 



Hab. ad littus occidental Nova? Hollandi;e (Preiss!) 

 "Radix late carnosa. Frondes longitudine ct latitudine fere G-pollica- 

 res, in ramos nonnnllos primarios, inferno denudatos, a medio dense pin- 

 nalitldos, divisae. Rami primarii plani, at costa inferno incrassata ancipites 

 et in infima parte lamina ohliterata subnudi, Y^y^ pollicem lati, coria- 

 ceo-membranacei. Kami secundarii et snperiores sursum sensim breviores, 

 lineares plani, infcrne incrassati, costa evanescente sursum cnervcs, bi- 

 tripinnati, pinnis pinnulisqtie opposilis sub-oppositisve planis linearibus 

 obtusis aut subacutis. Pinnule ultima 1 '/ unciam longa 1 simplices aut 

 dentatae. Substantia coriacea. Color exsiccator ferrugineo-purpureus." 



Harvey mu judice bane plantain jure uptime ad Tbysanocladiam duxit. 

 Differentias costaj quasdam exislere dixit, quas mihi viderc sane baud 

 contigit. Structura in omnibus spcciebns generis oxactc eadem mihi ad- 



nimium dederim \itio verlit (Bv/iite p. S3) ille idem, qui, ut ex eudem opcre 

 appareat, differentiam Gigartinac et Gracilarisc nondum pcrspexerit! 



