483 FLORA ANTARCTICA. [Fuegia, the 



the former of these it differs in being larger, more rigid, and having ramuli of much greater diameter, so that under 

 the microscope it is impossible to confound them. Its Cape of Good Hope representative, and indeed, very near 

 ally, is the P. setigera, Harv. (Nereis Australis.) 



Plate CLXXXYII. — Fig. 1, branch and ramuli ; fig. 2, portion of a ramulus ; fig. 3, another ramulus ; fig. 4, 

 t'avella ; fig. 5, spores from ditto ; fig. 6, tetraspores : — all magnified. 



36. CEEAMIUM, Adam. 



1. Ceeamium rubrum, Ag. Fl. Antarct. Pt. 1. p. 191. 



Hab. Hermite Island, Cape Horn; Falkland Islands, and Christmas Harbour, Kerguelen's Land; 

 very abundant. 



These two Ceramia (rubrum and diapJumum) are very widely distributed throughout the temperate regions 

 of both hemispheres : they are also found on the shores of Peru and Brazil. 



2. Ceeamium diaphanum, Ag. Fl. Antarct. Pt. 1. p. 191. 



Hab. Hermite Island, Cape Horn ; Falkland Islands ; and Christmas Harbour, Kerguelen's Land ; 

 abundant. 



37. GRIFFITHSIA, Ag. 



1. Griffithsia Antarctica, Hook. fd. et Harv.; filis c<espitosis dichotome ramosis flaccidis, axillis 

 inferioribus patentibus, superioribus acutis, ramis elongatis ramulisque nudis ad nodos constrictis, articulis 

 eylindraceis superne paulo inerassatis, ramorum diametro sextuplo, ramidorum subtriplo longioribus ; — frueti- 

 ricatio deest. 



Hab. Hermite Island, Cape Horn, and the Falkland Islands ; on rocks. 



Fila sub 3 unc. longa, fastigiata, parce ramosa, ramis elongatis, distanter ramidosis, ramulis brevibus. Color 

 roseus : — charts arete adhseret. 



Allied to the G. secundiflora, J. Ag., but smaller in all its parts. 



2. Griffithsia corallina, Ag. Conf. corallina, Engl. Bot. t. 1815. 



Hab. Hermite Island, Cape Horn ; dredged up in about seven fathom Mater. 



A solitary barren specimen, resembling the British G. corallina, which is also a native of the Mediterranean 

 Sea, Canary Islands, and Cape of Good Hope. 



3. Griffithsia equisetifolia, Ag. Conf. equisetifolia, Engl. Bot. 1. 1479. 

 Hab. Falkland Islands ; (Agardh.) 



38. BALLIA, Harv. 



1. Ballia Brunonis, Harv. Fl. Antarct. Pt. 1. p. 190. 



Yar. 0. Hombroniana, Fl. Antarct. 1. c. 



Hab. Hermite Island, Cape Horn; Falkland Islands; Christmas Harour, Kerguelen's Land, and 

 the Crozet Islands ; most abundant; always (?) parasitical. 



One of the handsomest, and certainly the most common and widely distributed of the Antarctic Floridea -. its 

 northern limit in the New World is Patagonia, and the Bay of Islands in New Zealand in the Old. With regard to 

 the adoption of the trivial appellation of " Callitricha," which Agardh proposed for this species (under Sphacelaria), 

 it was waived in compliance with the wish of the first discover of the plant, whose name it now bears. 



