608 CAULEKPACEAE. 



mostly pestle-shaped, the pedicel 

 usually as long as the subglobose 

 or flatteued-subglobose summit or 

 often longer. 10. C. racemosa. 



Bamuli mostly Irregularly 2- or 3- 

 ranked, eubglobose or obliquely 

 pyriform, the pedicel usually 

 shorter than the enlarged summit 

 or obsolete ; clusters short and 

 somewhat botryoid or more elongate 

 with rather distant ramuli. 11. 0. vlavifera. 



1. Caulerpa fastigiata Mont. Ann. Soi. Nat. Bot. II. 8: 353. 1837. 



Serpochaeta fastigiata Mont. Ann. Soi. Nat. Bot. II. 20: 305. 1843. 



On stones, etc., near low-water mark. New Proyidence, Mariguana, and Great 

 Bahama (profusely abundant in a " boiling hole " in Golden Grove Creek) : — Ber- 

 muda and Florida to Brazil ; Friendly Islands. Type from Cuba. 



The plant has quite a different habit from the other West Indian species of the 

 genus, bearing a superficial resemblance to filamentous siphonaceous algae of other 

 genera and families, from which, however, it is usually distinguishable at sight (in 

 the dried condition) by its greater rigidity and dull dark green color ; under a 

 moderately high magnification, the delicate cellulose threads running from the inner 

 surface of the wall Into the lumen serve at once to determine its affinities. 



2. Caulerpa verticUlata ,J. Ag. Of v. K. Vet.-Akad. Forh. 4: 6. 1847. 



Serpochaeta verticillata Kiitz. Tab. Phyc. 7: 1. pi. 1. f. II. 1857. 

 Steptumoooelium verticillatum Kiitz. loc. cit. 7: 1. 



In shallow water in sheltered places, usually in association with RMsophora. 

 New Providence, Great Bahama, and Bimini ; — Bermuda to Brazil ; Indian and 

 Pacific Oceans. Type locality indefinite (American Virgin Islands or Guadeloupe?). 



This species in habit and size is suggestive of some of the more delicate species 

 of Nitella. 



3. Caulerpa prollfera (Foisk.) Lamour. Nouv. Bull. Sci. Soc. Philom. 1: 332. 



My 1809. 



Fucus prolifer Forsk. M. Aegypt.-Arab. 193. 1775. 



From near low-water mark to rather deep water. Joulter's Cays, Watling's 

 Island, Castle Island, and Great Bagged Island : — Bermuda and Florida to Guade- 

 loupe ; Canary Islands and Mediterranean Sea. Type from Alexandria, Egypt. 



Most of the Bahamian specimens have short, elliptic-oblong, or obovate fronds 

 and represent f. oiovata J. Ag. 



4. Caulerpa sertularioides (S. G. Gmel.) M. A. Howe, Bull. Torrey Qub 



32: 576. 1905. 



Fucus sertularioides S. G. Gmel. Hist. Fuc. 151 pi. 15. f. 4. 1768. 

 Fucus plumaris Forsk. Fl. Aegypt.-Arab. 190. 1775. 

 Caulerpa plumaris Ag. Sp. Alg. 1: 436. 1822. 



From near low-water mark to a depth of several meters. New Providence, 

 Great Bahama, Bimini, North Cat Cay, Exuma Chain, Cat Island, Watling's Island, 

 Mariguana, Calcos Islands, and Great Ragged Island : — Bermuda and Florida to 

 Barbados ; widely distributed in tropical and subtropical seas. Type " American." 



5. Caulerpa crassifdlia (Ag.) J. Ag. Till Alg. Syst. 1: 13. 1873. 



Caulerpa taxifolia erassifolia Ag. Sp. Alg. 1: 436. 1832. (Exel. syn.) 

 Caulerpa piiinata Web.-v. Bosse, Ann. Jard. Bot. Buitenzorg 15: 289. 



1898. (Excl. syn. Fucus pirmatus L. fil. Suppl. 452. 1781.) 

 Caulerpa mexieana Sond. ; Kiitz. Sp. Alg. 496. 1849. 



In sheltered localities from near low-water mark down to a depth of 30 meters 



{fiie Biirgesen). Exuma Chain, Mariguana, and Great Ragged Island: ^Bermuda 



and Florida to Mexico and Brazil ; widely distributed in tropical and subtropical 

 seas. Type from the West Indies. 



