RHODOMELE^.. 417 



merulosa (collapsa) repletis et, prout quoeque peripherise magis 

 aceedit, sensiui decrescentil)us constans. Stratum corticale seu 

 periphericum inferne multo crassius quam medullare, superne 

 videlicet in ramis tenuius, totum e cellulis minutissimis endo- 

 chromata quadrata includentibus, seriatim et horizontalitcr ra- 

 diantibus arctc coalitis, constitutum. Color in humido fusco- 

 purpureus, siccus nigerrimus. — M., Cent. IV, in Ann.., 2, 

 XX, p. 296. 



U77. Melanthalia .Iaubertiana M., —1. c, n' 65, 1. 12. — fronde 

 deorsum cylindracea sursum plana angiistissima (vix 1/2 linea), sub- 

 fasciculato-ramosa, ramis crebre dichotomis, segmentis fastigiato- 

 subflabellatis , margine integerrimis ; coccidiis marginalibus vel in 

 dichotomia sessiiibus. 



Hab. Ad littora Van-Diemen : Hb. Jaubert. — Kg., Spec^ p. 785. 

 — J. Ag., Spec, p. 613. 



* M. BiLLARDiERii M., — 1. c. — frondc latiori lineari, plana, eroso- 

 crenulata, prolifera, subvirgato-dichotoma, segmento altero breviori ; 

 coccidiis submarginalibus. 



Hab. Cum priori : Labillardiere, Nov. HoU. Planf., t. 255, sub 

 Fnco obtusnto. — Kg., I. c. — M. obtumta J. Ag., I. c, p. 61/i. 



*Thamnophora Ag. — M., Cuba, Crypt., p. 5^i; observationes. — 

 Alsidium J. Ac. 



* Thamnophora triangularis Ag. — M., I. c. p. 56, t. 5, fig. 1, f-i.; 

 fructus tetrasporicus et structura tlialli. 



* T. Seaforthii Ag.— M.. I. c, p. 59, t. 5, fig. 1, a-e. k, I.; fructus 

 conceptacularis et structura tlialli. 



1478. Rhodomela episcopalis M., — Ccnt.Wl, iriAnn., 2, XVIH, 

 p. 253. — fronde basi nuda, continua, pennam anserinam axiuante, 

 elata, ramosissima, ramis ramulisque subulatis rectis spurie articu- 

 latis, ramentis secundis fasciculatis , more helicis involuti,«>; concepta- 

 culis globosis sessilibus mucronatis, demum submuticis, in dorso 

 ramenti involuti seriatis, intus sporas anjiulatas, fuliginoso -fuscas , 

 linibo perisporii cinctas foventibus. 



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