GELIDIACEAE. 550 



7. Galaxaura oblongata (Ell. & Sol.) Lamour. Hist. Polyp. 262. 1816. 



Corallina oblongata Ell. & Sol. Nat. Hist. Zooph. 114. ?;?. 2S. f. 1. 1786. 

 Dicliotomaria fragilis Lamarck, Hist. Nat. Aiiim. sans Vert. 2: 14o. 1816. 

 Galaxaura fragilis Decaisne, Ann. Sci. Nat. Bot. II. 18: 116. 1842. 



From low-water mark down to 50 meters, South Bimini and Caicos Islands : — 

 Cuba; Jamaica; Porto Rico; American Virgin Islands; Barbados; and I'anama 

 (Colon). Tj'pe from "West Indian Islands." 



8. Galaxaura obtusata (Ell. & Sol.) Lamour. Hist. Polyp. 262. 1816. 



Corallina obtusata Ell. & Sol. Nat. Hist. Zooph. 113. pi. 22. f. 2. 1786. 

 Galaxaura Decaisnei J. Ag. Sp. Alg. 3^: 526. 1876. 



Galaxaura moniliformis Kjellm. K. Sv. Vet.-Akad. Handl. 3^: 83. pi. 17. f. 

 15-30; pi. 20. f. 54. 1900. 



Mostly in 7-18 meters of water, type attributed to the Bahamas : — Bermuda ; 

 Florida ; Cuba ; Jamaica ; Porto Rico ; Barbados ; and Brazil. 



9. Galaxaura marginata (Ell. & Sol.) Lamour. Hist. Polyp. 264. 1816. 



Corallina marginata Ell. & Sol. Nat. Hist. Zooph. 115. pi. 22. f. 6. 1786. 



Zanardinia marginata J. Ag. Sp. Alg. 3^: 534. 1876. 



Brachycladia marginata Selimitz, Flora 47: 438. 1889. 



Galaxaura occidental is Borg. Dausk Bot. Ark. 3^: 109. /. 118-123. 1916. 



Low-littoral under shelving rocks or in shallow water, Berry Islands and Great 

 Bahama : — Bermuda ; Florida ; Cuba : .Jamaica ; Porto Rico ; American Virgin Islands ; 

 Barbados; and Panama (Colon). Type from the Bahamas. 



Family 4. GELIDIACEAE. 



1. WBANGELIA Ag. Sp. Alg. 2: 136. 1828. 



Principal filaments corticated. 1. IF. pcnicUlata. 



Filaments uncorticated or with loose irregular rhizoidal corti- 

 cations at nodes only. 

 Plants 1-3 cm. high, purple-red ; the conic-acute terminal 



cells of the ultimate ramuli mostly solitary. 2. W. Argus. 



Plants 4-10 cm. long or high, usually rose-pink ; the conic- 

 acuminate or acicular terminal cells of the ultimate ramuli 

 mostly geminate. 3. TF. hicuspidata. 



1. Wrangelia penicillata (Ag.) Ag. Sp. Alg. 2: 138. 1828. 



Griffitsia penicillata Ag. Syst. Alg. 143. 1824. 



Variable in size, color, and habit of branching ; often blackening with age or on 

 drying. On rocks and on other algae from between the tide-lines in sprayed or surf- 

 beaten locations down to a depth of 30 meters (fide Borgesen). New Providence, 

 Great Bahama, North Cat Cay, Berry Islands, Exuma Chain, Watling's Island. Mari- 

 guana, and Caicos Islands : — of wide distribution in the West Indies and in the 

 warmer seas. Type from Italy. 



2. Wrangelia Argus (Mont.) Mont. Syll. 444. 1856. 



Griffithsia Argus Mont, in Webb. & Berth. Phyt. Canar. PI. Cell. 176. pi. 8. 



f. 4. 1840. 

 Wrangelia pleheja J. Ag. Sp. Alg. 2: 707. 1852. 



Forming low compact cushions on rocks and algae near the low-water mark, 

 Great Bahama. South Blniini. and the Caicos Islands: — Mexico; Florida: Porto 

 Rico ; American Virgin Islands ; Barbados ; and Canary Islands. Tn>e from the 

 Canary Islands. 



3. Wrangelia bicuspidata Borg. Dansk Bot. Ark. 3>: 118. /. 127-130. 1916. 



On roots of Rliizophora and on various algae and Gorgoniacene, from low-water 

 mark down to 30-40 meters (/?f/c Borgesen). often abundant. Rose Island. Berry 

 Islands. Great Bahama. Exuma Chain. W;itling's Island, Atwood Cay. Caicos Islands, 

 and Great Ragged Island : — American Virgin Islands. Type from American Virgin 

 Islands. 



