THI'] LI?.'^ HISTORY OF GRIFFITHSIA BORTOTIAiTA. 



The red alga, G rif f 3 thsia Bornetia na , was first de- 

 scrilDOd by W. G. Farlov/ ('77). It has 'been reported as oc- 

 curring coinrnonly from northern l/Iassachiisetts (COLLIITS, '0 , 



p, 50) south to Long Ir;lr.nd Sound, rnd h^.r. Iieen i-or;r,,->ded 



(1) 

 f ro:ii Nev7 Jersey (3RITT0H, '81). It forms rosy tufts, 2.5 



to 15 centimeters high, on rocks, "v.li&rves, sponges, shells 



and occasionally on Zostera" (PARLOV/, »79, p. 131), South 



of Cape Cod it is found grov/ing from one to four feet "be- 



lov; low water mark, in protected sitiiations such as the 



Lit.:.lo Hr.;:"oor at Wood's Hole, Ifess,, and on rocks in more 



exposed localities. 



The present investigation /as "begun i i 1905 on ma- 

 terial collected at Cold Spring Ha^rhor, ITev; York, "by D. S. 

 Johnson in 1902, and has heen cor'tinued during 1906 lUid 

 1907 at .Vood's Hole and at the Jolins Hopkins University, 



In all plants examined, v/ith two exceptions noted be- 

 lov/, the anther idia, cystocarps, and tetraspores are borne 

 on separate individuals, which ma:' ^e readily distinguish- 

 ed v;ith the aid of a hand lens. The male plant is smaller 

 and more compact than either the feiiiale or tetraaporic 



(1) The form reported from as fcLr south as the Barbadoes 

 by laie. VICKP^S ('05) is "b^lir^ved by Dr. FARLOW not to 

 be identical with G. Bornetiana- 



