CAULEEPACEAE. 



607 



2. Bryopsis hypnoides Lamour. loc. cit.; Jour, de Bot. 2: 135. pi. 5. f. 2 a, b. 



1809. 



Found washed ashore probably from a little deeper water than the last. 

 Great Bahama : southern Massachusetts to Bermuda ; widely distributed in the 

 warm temperate seas. Type from near Cette, southern France. 



3. Bryopsis Duchassaingii J. Ag. Ofv. Vet.-Akad. Forh. 11: 107. 1854. 



Trichosolen Antillarum Mont. Ann. Sci. Nat. Bot. IV. 14: 171. 1860. 



Found washed ashore. Great Bahama: Bermuda to Guadeloupe (Barbados?). 

 Type from Guadeloupe. 



Family 10. CAULERPACEAE. 



1. CAULERPA Lamour. Nouv. Bull. Sci. Soc. Philom. 1: 332. My 1809. 

 HAUVINIA Bory, Voy. Coquille, Bot. Crypt. 204. 1829. 

 TRICLADIA Decaisne, Ann. Sci. Nat. Bot. II. 17: 337. 1842. 

 HERPOCHAETA Mont. Ann. Sci. Nat. Bot. II. 20: 305. 1843. 

 STEPHANOCOELIUM Kiitz. Bot. Zeit. 5: 54. 1847. 

 CHEMNITZIA (Decaisne) Mont. Orb. Diet. 10: 53. 1849. 

 PHYLLERPA Kiitz. Sp. Alg. 494. 1849. 



Stolons and upright fronds similar, filiform, in habit somewhat suggestive of 

 Vaucheria, Dertesia, or the irregularly branched species 

 of Bryopsis. 1. c. fastigiata. 



Stolons and upright fronds more or less different in form. 

 Fronds filiform, the ramuli verticillate (at least the 



upper), fastigiate or subfastigiate, di- or trichotomous. 2. C. verticillata. 

 Fronds stouter, ramuli not in distinct whorls. 



Fronds foliaceous, entire, linear or elliptic-oblong, 



often proliferous. 3. C.prolifera. 



Fronds terete, subterete, or angled, or, if flattened, 



pinnately dentate, lobed, or plumose-pinnate. 

 Fronds distinctly flattened. 



Fronds plumose-pinnate, the pinnules terete, 



mucronate. 4. C. sertularioides. 



Pinnules or teeth flattened. 



Fronds linear-lanceolate in outline, 6-15 

 mm. broad, the pinnules often contracted 



at base. 5. C. crassifolia. 



Fronds narrowly linear, 2-3 mm. broad, 

 often twisted and constricted here and 



there, the margins occasionally entire. 6. C. Freycinetii. 



Fronds terete, subterete, or angled, in general 



outline. 



Stolons densely clothed with short simple or 

 sparingly branched root-hairs : fronds 

 with crowded, imbricate, bristle-like, mu- 

 cronate ramuli. 7. C. lanuginosa. 

 Stolons naked. 



Frond with a naked stipe bearing usually 

 a dichotomo-palmate or dichotomo-umbel- 

 late cluster of secondary ramuliferous 

 branches; ramuli (2) 3-10 (16) -ranked, 

 with acicular 2-ranked ramelli pectinately 

 secund or pinnately disposed, the longer 

 often sparingly dichotomous or again 



Pinnate. 8. C. paspaloides. 



Stipe usually not well differentiated. 



Frond usually angled, the ramuli mostly 

 in 2-6 ranks, somewhat boat-shaped 

 or prow-shaped (at least the basal), 

 ovoid, mamilliform, or less commonly 



terete, always mucronate. 9. C. cupressoides. 



Frond not angled, the ramuli subglobose, 

 pyriform, pestle-shaped, or occa- 

 sionally subclavate. 

 Ramuli in more or less elongate 

 racemer-like clusters, several-ranked, 



