326 FLORiDEJS (Barton). [Caulacanthus 



2. CAULACANTHUS KUtz. Phyc. Gen. 395. 

 1. C. ustulatus KUtz. I.e. 



MossAMEDES. — Very frequent on calcareous rocks of the sea near 

 Mossamedes ; July 1859. No. 76. Frequent on calcareous and sand- 

 stone submarine rocks near Mossamedes ; July 18fj9. No. 77- 



St. Vincent, Cape de Verde. — On the shore, Praia de Gale : Aug. 

 1853. No. 230. 



3. GELIDIUMLam.in Ann. Mus. Hist. Nat. Paris, XX. 1813, 128. 

 1, G. comeum Lam. I.e. 



Benguella. — On Patellae thrown up by the Atlantic near Benguella ; 

 June 1859. No. 75. 



Luanda. — On rocks near S. Pedro, frequently covering all the rocks ; 

 July 1854. No. 50- 



4. GIGARTINALam.inAnn. Mus. Hist. Nat. Paris, xx. 1813, 134. 

 1. G. Teedii J. Ag. I.e. 

 Luanda. — Morro das Lagostas, rare ; July 1854. No. 117. 



5. FLAHAULTIA Born. Alg. Schousb. 278. 



1. F palmata. Barton in Journ. Bot. 1897. 



Loanda. — Frequent near Morro das Lagostas ; Jan. 1854. No. 65- 

 Angola, Fort Concei^ao ; July 1854. Nos. 78, 80. On shells and 

 rocks near Morro das Lagostas, frequent ; Jan. 1854. No. 99. 



6. GRACILARIA Grev. Alg. Brit. 121. 

 1 G. confervoides Grev., I.e., p. 123. 



Loanda. — Thrown up on the island, rare ; Jan. 1854. No. 95- 



7. HYPNEA Lam. in Ann. Mus. Hist. Nat. Paris, XX. 131, 1813. 

 1. H. musciformis Lam., I.e. 



Loanda. — When living, mostly pale brown and fragile ; when thrown 

 up and exposed to the air it becomes flaccid and of a red, purple, and 

 orange colour, variegated. Fruit occurs rarely. Frequent and of 

 various forms on rocks, shells and other algae on the shores of Loanda, 

 where large quantities are thrown up. On coralline rocks near S. 

 Pedro ; July 1854. No. 84. 



St. Vincent, Cape de Verde. — On volcanic rocks and on other 

 algae on the shore, frequent. Praia de Galfe ; Aug. 1853. No. 250 



8. RHODYMENIA J. Ag. Alg. Liebm. 15. 

 1. R. palmetta Grev. Alg. Brit. p. 88. 



Loanda. — On rocks at Morro das Lagostas ; Jan. 1854. No. 115. 



9. CHRYSYMENIA J. Ag. Alg. Med. et Adriat. 105. 

 1. C. uvaria J. Ag., I.e., p. 106. 



St Vincent, Cape de Verde. — On the shores. When alive, rose- 

 purple, wine-colour ; Aug. 1853. No. 240. 



10. PLOCAMIUM Lam. Ann. Mus. Hist. Nat. Paris, xx. 

 137, 1813. 



1. P. coccineum Lyngbye, Tent. Hydrophyt. Dan. p. 39. 

 St. Vincent, Cape de Verde. — On volcanic rocks near Praia de 

 Galfe ; 21 Aug. 1853. No. 241. 



