108 >LLIN8 \\l> 111 i;\ M . 



plate, 1853, PL XXTV, and the specimens distributed as Alg. Am.-Bor. 

 Exsicc., No. 12. Turner's plate of Fucua apinonu was drawn from 

 the specimen in the Linnean herbarium, and represents the tyjx 

 the species. It has papillae partly whorled, partly scattered; there 

 would be do trouble in matching it from Bermuda material, while 

 Harvey's plate is quite typical of the ordinary, well developed plant. 

 We think we are justified In discontinuing the name E. info 

 But on referring to the original description of Fucua apinoaua, Linn* 

 1771, p. 313, we find that be gives as synonym " F. denticulatua Burm. 

 prodr. _n". 13 Referring to that page we find the description "Caule 

 compresso ramoso ramis dentato-geniculatis ramulosia subdicho- 

 tomis." This, with tin' reference by Linnaeus, necessitates the new 

 binomial we have used. 



We bave examined specimens from the Cape of Good Hope, S 

 pore and the Sunda [slands, quite indistinguishable from the American 

 plant. 



Family SPHAEROCOCCACEAE. 



Gelidiopsis Schraitz. 



G. rigida (Vahl) Weber, 1904, p. 9; P. B.-A., Xo. 2090; Gelidium 

 rigidum var. radicans Alg. Am.-Bor. Exsicc.. No. 1 12; Fucua ri<ji>hix 

 Vahl, 1^02, p. 46. Form- dense mats at and below l'»w water mark, 

 generally coarse and unattractive. 



Gracilaria Greville. 



1. Fronds stout, prostrate, attached to the substratum. S. G. horizontals. 

 1. Frond erect. - • 



2. Frond plane. 3. 



2. Frond terete or compressed. 4. 



3. Frond membranaceous, dichotomous, axils wide and rounded, apices 

 obtuse. 7. G. diehotomo-flahellata. 



3. Frond cartilaginous, axils acute, divisions tapering, acute. 



• '.. ( r. multipartita. 



\. Branches long, filiform, slender. 1. G. oonfervoides. 



\. Branches uot filiform. 5. 



13 There i< :m error in the paging of this work; the pages run 1-28, then 



25, 26, 27, 28, and then rectly; the presenl references econd 



!'■ 28. 



