THE MARINE ALG.E OF NEW ENGLAND. 1G7 



sima, but it must bo oonffsstMl api»n)a<biu«x C danifphiilla. liailoy was iik liiMcl !<» nfcr 

 it to C (hiMf/phi/lhi. Ho «|Uotos M<)ntajj;uo, who first ilosoribod tlii' siuoifs, as iMurcuna 

 ihiHiihhi/lla, as follows: *'Notwitlistan«lin<^ tlio oloso allinity of this al^xa to Ldurencia 

 Unitisifiiini aud to L. (Uisi/phiiUa, it oaunot bo oonfoundtMl with oithor oftlu'iu. The 

 absouoo of ramilioalion distin^uishos it sutboirutly fn>ni tho lirst, and tlio tonii of the 

 ranionta do«'s not ponnit it to bo loforrtMl to tln> socond, from which it is in otlu'r ro- 

 spoots (luittMlistinct." Just wliat is moant by tho ''absonco of ramitioation," by which 

 L. Jiaih'iiaim is to bo distiuijished from A. tuiHisxhna, is not oasy to 8o«\ 



C. LiTToKALis, (lliirv.) J. A^'. {('htmdria litforalls^ ]S\'r. Am. IJor., 

 Tart II, p. L»2.) 



** Fronds rolmst, clonj^ate, siibdichotoinoiis or irroii^iilarly imicli 

 braiU'liod, braiu-lu's llcxiious, attenuated, witli rounded axils, raiiiuli 

 seattered or crowded, fiisirorin, attenuated at tlie l»ase and ;ii)e\, simple 

 ov pinnnlated, aente." (Harvey, 1. c.) 



Wood's IIoll, :\Iass., ir. G. F. 



Tho desoription lakon from tho Norois ajjplics pr«'tty well to a spt'cimon collootcd at 

 Wood's H«dl. Wo have soon sovt-ral spocimons of tho spocios colloctod at Key Wost. 

 It is dark oolorod and coarso, but has tho branching and habit of C. tenuiisaima. Tho 

 Koy Wost spooimons are reddish yellow, perhaps owing to exposure to the sun. 8i»e- 

 oies of tho present genus vary so mueh in ap]>oaranee, according as they are more or 

 loss thoroughly "8(|uashod" in pressing, that the determination of dried specimens fre- 

 quently has but little value. 



(\ ATiioPURPrREA, (Ilarv.) J. Ag. {Chondria atropurpurca, llarv., 

 \er. Am. T.or., Part II, IM. 18 e.) 



Fronds four to six iiiebcs high, robust, very densely branched ; branches 

 ]>atent, secondary branches tapering at the base and ai)ex, beset Avith 

 scattered I'usiform ramuli. 



Var. FASCICULATA, Farlow. 



Secondary branches borne in clusters; cystocarps broadly ovate, sessile 

 on short lateral branchlets. 



From Charleston, IS. C, southward, Uarveij. Var. fasciculdta^ Fort 

 Hamilton, X. Y. 



The characters of the present species are not well defined. Specimens from Charleston, 



determined by Harvey himself, are robust and have the ultimate branches scattered, but 



unfortunately they are without fruit. What has been supposed to be a variety of tho 



same species occurs rathor commonly on tho coast of Califoniia, and was distributed in 



the Alg. Am. Hor., No. 57. It is, h(»wever, not beyond question whothertho form dis- 



ributctl should not rather have been referred to C. nidijlca, Harv., described in the 



^ujqdement to tho Ncrois The plant which is here described as var. faHciculaia is h'ss 



'•l>nst th:in specimons fro^n California and Charhston, but resembles thom in tlu'dark 



"lor and secondary branches which tajur at both extremities. It tlilVers from Cliarles- 



on specimens in having the branches in tufts, in which respect it resembles somoCal- 



Mornian Hpecimons. Whetln-r tho New York form shouhl be considered a variety of 



C. alropurpiirea rather than C. nUUfua is perhaps doubtliil. 



