608 CAULERPACEAE. 



mostly pestle-shaped, the pedicel 

 usually as long as the subglobose 

 or flattened-subglobose summit or 



often longer. 10. C. racemosa. 



Ramuli mostly irregularly 2- or 3- 

 ranked, subglobose 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. C. alavifera. 



1. Caulerpa fastigiata Mont. Ann. Sci. Nat. Bot. IL 8: 353. 1837. 



Herpochaeta fastigiata Mont. Ann. Sci. Nat. Bot. II. 20: 305. 1843. 



On stones, etc., near low-water mark. New Providence, 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 verticillata J. Ag. Of v. K. Yet.-Akad. Forh. 4: 6. 1847. 



Herpochaeta verticillata Kiitz. Tab. Phyc. 7: 1. pi. 1. f. II. 1S57. 

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



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

 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 prolifera (Forsk.) Lamour. Nouv. Bull. Sci. Soc. Philom. 1: 332. 



My 1809. 



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



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

 Island, Castle Island, and Great Ragged 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. obovata J. Ag. 



4. Caulerpa sertularioides (S. G. Gruel.) M. A. Howe, Bull. Torrey Club 



32: 576. 1905. 



Fucus sertularioides S. G. Gmel. Hist. Fue. 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, Caicos Islands, and Great Ragged Island : Bermuda and Florida to 

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



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



Caulerpa taxifolia crassifolia Ag. Sp. Alg. 1: 436. 1822. (Excl. syn.) 

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



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

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



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

 (fide Borgesen). 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. 



