304 HARVEY’S ILLUSTRATIONS, 
various lengths, not dichotomous but pinnated with slender 
dichotomous branches in a distichous manner. 
CONFERVE. 
19. Conferva gracilis; filis tenuibus flexuosis sericeis 
ramosissimis flavo-viridibus, ramis angulato-flexuosis parcé 
divisis, ramulis ultimis pectinato-secundis attenuatis longissi- 
mis, articulis diametro 3—5-plo longioribus. Griff. in Wyatt, 
Alg. Danm. N. 9%. 
Ad algas majores et Zosteram.—* Torbay.” Dna. Griffiths 
& Dna. Wyatt.—* Youghal,” Dna. Ball —* Wicklow,” 
ubi ipse legii— Fila 6—12 uncias longa, pulchré czespitosa, 
flavo-viridia siccitate nitentia; rami primarii maxime angu- 
losi vel geniculato-flexuosi. 
A very beautiful species. It is nearly allied to C. flexuosa 
of Dillwyn, a native of salt marshes, and by Agardh made a 
variety of C. fracta. The appearance of C. gracilis, however, 
is very different, and it always grows in the open sea. 
Whether or not our plant differs from the C. sericea of 
continental authors I cannot determine; I have seen no 
authentic specimens, and in such a genus as this I prefer 
giving a new name to the British species, to deciding on 
uncertain grounds. The whole Genus wants revision; but, 
perhaps, no part of it more than the section to which C. 
gracilis belongs. 
13. Conferva uncialis ; cespite brevissimo spongioso basi 
simpliciusculo apice in ramos lanosos fastigiatos diviso, filis 
tenuissimis flexuosis parcé ramosis maximé intricatis, ramulis 
distantibus secundis subpectinatis longis patentibus incurva- 
tisve articulis diametro 2—4-plo longioribus. dg. Syst. Alg. 
P HL- FLdDam 40774. fol: 
Ad rupes. ‘ Torquay.” Dna. Griffiths. 
Ceespes uncialis intense viridis spongiosus, habitu feré 
Ectocarpi tomentosi, ex filis tenuissimis maxime intricatis 
flexuosis constans. 
This pretty little species is well distinguished by its peculi- 
