480 FLORA ANTARCTICA. \Fuegia, the 



ceramidiis pusilJis ovatis breve pedicellatis. Nobis in Lond. Joum. Bot. vol. iv. p. 265. (Tab. CLXXXII. 

 Fig III.) 



Hab. Hermite Island, Cape Horn ; very rare. 



Fil. 3-4 una longa, capillaria, flaccida, tenacia sed non fragilia, dense csespitosa, basi irregulariter dicho- 

 tome ramosa, ramis omnibus diametro aequabbus. Ceramidia minima, lateraba, elhptico-urceolata. Color luride ruber. 

 Plate CLXXXII. Fig. III. — 1, portion of branch ; 2, ditto with ceramidium : — both highly magnified. 



7. Polysiphonia abscissa, Hook. fil. et Harv. ; coccinea, frondibus circumscriptione ovatis tenuibus 

 membranaceo-gelatinosis flaccidis tenacibus obgosiphoniis, caule primario parce diviso flexuoso ramos 

 secundarios altemos multifidos circumscriptione obovatos emittente, ramis fibformibus minoribus alternis 

 subdicbotorne divisis, ramulis fastigiatis (quasi abscissis) fibrilliferis, articulis ramorum diametro quadruplo 

 v. sextuplo, ramulorum duplo triplove longioribus bistriatis, ceramidiis pusilbs ovatis breviter pedicellatis. 

 Nobis in Lond. Joum. Bot. vol. iv. p. 266. (Tab. CLXXXIH. Fig. II.) 



Hab. Hermite Island, Cape Horn ; dredged up in about six fatbom water. 



Frons seu ramus primarius 3-4 una longus, filiformis v. capillaceus, flexuosus, alteme ramosus, ramis grada- 

 tim brevioribus, hinc rircumscriptio frondis totius ovata evadit. Rami interne nudiusculi, superne fastigiatim ramu- 

 losi ; ramulis ultiinis tenuissimis, coufertis. Caulk tubuli sub quatuor. Color roseus v. coecineus. 



A beautiful species, of which the only specimens were procured with the dredge in St. Martin's Cove. 

 The fastigiate brandling of the ramuli and the colour are, of themselves, sufficient to distinguish this from the 

 P. microcoria, to which it is most nearly related. The principal stem is very conspicuous though slender, and 

 the branching regular and tolerably uniform. 



Plate CLXXXIH. Fig. II. — 1, plant of the natural size; 2, branch and ramuli; 3, portion of ramulus; 

 4, portion of ramus ; 5, ditto, with ceramidium : — all highly magnified. 



8. YoixsiTHomAjlaljettiform/s, Hook, fil et Harv.; pusilla, setacea, badia, rigidula, fronde brevi basi 

 simplici stipitiformi apice flabellatim ramosa, ramis irregulariter dicbotomis multifidis apice sub fastigiatis, 

 ramulis ultiinis erectis longe nudis, axillis angustis, articulis multistriatis inferioribus diametro multiplo 

 superioribus sesquilongioribus. Nobis in Lond. Joum. Bot. vol. iv. p. 266. (Tab. CLXXXIH. Fig. I.) 



Hab. Crozet Islands ; on Macrocystis pyrvfera. 



Frons uncialis, solitaria, rigida, crassitudine setae porcinse, inferne simplex, superne distiehc flabellatim ramosa, 

 crassiuscula, circumscriptione orbiculari. Rami multifidi, irregulariter dichotomi, fastigiati, ramulis erectis. Articuli 

 ramivalde elongati, striis numerosis notati. Color badius, vix rufescens : — chartae vix adhseret. 



Only one specimen of this very distinct species was procured, from a piece of Macrocystis floating off the 

 Crozet's Islands, of which group the present, the Callithamnion Ptilota, nob., and Ballia Brunonis, are the only 

 known vegetable productions. 



Plate CLXXXIH. Fig. III. — 1, plant of the natural size ; 2, branch and rainub ; 3, portion of ramulus, and 

 4, of stem : — highly magnified. 



9. Polysiphonia (Heterosipbonia) Berheleyi ; Het. Berleleyi, et Pol. punicea, Mont. Voy. au Pole 

 Sud, Bot. Crypt, p. 128. t. 5. f. 3. Ft. Antarct. Pt. 1. p. 182. 



Var. /3. Davisii ; robustior, caule primario regulariter ramoso, ramis erecto-patentibus sub-bipinnatim 

 ramulosis, ultimis erectioribus densioribus parciusque divisis. P. Davisii, nobis in Lond. Joum. Bot. 

 vol.i. p. 267. 



