\ Gepp in 1 ran Linn 3 i Bol VII. 



and I XII. 1909 p. j88. 



Buil torre} Bol ' lub XXXVI. 1 1 p 96, pi. $; pi -10. 



\,. N. Am., in Tufts College Studies II. 1909. p. 395. 



nt pn la Guadeloupe," D 'Avrainville in Herb. Mu Paris sub 

 ,u" ! - ideloupe, Saintes, .\us<- sous Ie vent, sui la coquille du 



;.'.: <r 1358 bis! < iuadeloupi , Ba eterre, ui la 1 oquille 



d u Stromb N ;. Ma n" 99, première série! — Guadeloupe, Saii 



sable vaseuse, eaux tranquilles, en Février, Mazt n 1 150 bis! — 



-V, . Suhi sub n« uu. ' '■ 1 nfundibulum St. Thomas, " Challenger" Exped- 



n, 5—15 fathoms! St. Thomas, F. Börgesen, herb. ui fathoms), rioi 



fathoms), 1137 20 Fathoms), 1173 115 fathon St. Croix, F. . <t, herb. 



; fathoms)! St. Jan, /•'. Börgesen, herb. u 1 148, and an unnumbered 



cimen! Pedro and Morant Cays, Gulf of Mexico, 2 — 100 fathoms, Carpenter\ — 



Bahama Bank, /•'. M. Rayner in Herb. Mus. Brit! — Bermuda, " Challenger" Expedition, 



31 fathoms in Herb. Mus. Brit.!, 30 fathoms in Herb. Kew\ — Bahamas, Exuma I hain, 



Cave Cays, Hawe n Columbia, St» Marta, baie de Tagauga, explanate examples 



dredged [8. II. 1896, yacht "Chazalie", Versluys\ in llcrb. Webei van Bosse. 



Plants varying in length to about 17 cm. high, moderately calcified, rather flexible. 

 Root-mass bulbous to elongate. Stipes simple, terete, or sometimes fiatly expanded above, up 

 cm. long and 0.6 cm. thick, corticated, usually passing abruptly into the frond; cortex 

 smooth, very minutely pseudoporose. 



Frond cyathiform, or split open and explanate, sometimes flabelliform, up to ; 1 cm. 

 long and 9 cm. wide, tïssile, often more or less deeply lacerate, often zoned, green to ashy- 

 white, superficially fibrous or resembling coarse appressed nap; margin usually lacerate or fimbriate. 



Filaments of frond about 40 — ioo y. in diameter, calcified, radiating from the stipes to 

 margin, evenly constricted above each dichot<>my, somewhat flexuous, pluriseriate, not 

 conspicuously conglutinated together as in U. conglutinata and less frequently dichotomous 

 than in that species. 



Filaments of stipes bearing lateral appendages, dichotomously divided, and terminated 

 by truncate, cymoid heads of abbreviated capitate apices, approximated together to form a 

 k, which is hardened with a calcareous deposit. (See Howe in Buil. Torrey Bot. Club. 

 XXXVI. 1909. pi. VIII, figs. 8—10) [Fig. 2, 6, 9]. 



This species was l'ounded in 1S42 by Decaisne (loc. cit.) and the type is evidently the 



specimen labelled by De< visni U. acetabulum in Herb. Mus. Paris, and kindly Ient to us 



Another example of the same species is the Codium infundibulum of Suhr [Udotea 



ndibulum J. Ag.). Through the kindness of Major Reinbold we have been enabled to see 



and examine Suhr's original plant, which is a smal! specimen of U. cyathiformis Decne. and 



mbles the type in the small si/c of its filaments (about 40 — 50 tj.). Suhr's plant is labelled 



oming from "W. India", meaning presumably the West (ndies, and before il came into 



Major Reinbold's possession was preserved in the Herbarium of Prof. Jessen, the friend and 



l>n 1 >ïl of Slhr. J. G. Agardh (Till Alg. Syst. V. p. 71) quotes the East Indies, "ad oras 



fide Suhr)", as the locality for this plant, but he remarks later that the 



