265 
cyst is was described as a genus of Uredineae by Léveillé, 
and therefore his name is older than that of Kiitzing. 
7. Ilea. 
Phyllitis Kütz. Phycol. General.. 1843, cannot be main- 
tained. because there is an older homonym: Phyllitis Hill 
Brit. Herbal. 1756 (= Scolopendrium Adans. 1763). There 
are two other names, which could be taken into conside- 
ration: Ilea and Pctalouia. 
In Spec. Alg. v. 1, Pars 2 Lundae 1822) C. Agardh 
had given the name Solenia to the »Tribus Ulvae intestina- 
lis»; Which will do. But when he converted this tribus into a 
genus, he was surely not aware of the preoccupation of 
the generic name Solemn to a fungus, which, still remains 
valid. In consequence of this E. Fries in 1825, Syst. Orb. 
Veget. Pars 1 (Plant. Homon.) p. 336 changed the name to 
Ilea. Probably, however, neither of these authors had then 
seen this little paper by Link (in Hor. Phys. Berol.. 1820), 
where he describes his new genus Enteromorpha especially 
founded on Ulva intestinalis. 
In his Flora Scanica, 1835, E. Fries adopted Link's 
generic name Enteromorpha and set up a new genus Ilea 
with two species: I fascia (FI. Dan. sub Ulva) and /. foeni- 
cii/acea (Huds. sub Conferva). 
j. PI Areschoug separated the latter species and 
kept only the former one in the genus Ilea , when he 
brought this genus to the family Dictyoteac ■ (in Phycearum 
quae in maribus Scandinavie crescunt enumeratio, sect, 
prior Fucaceas continens (in Nov. Act. r. Soc. scient. Upsal. 
Vol. 13, 1847, p. 353— 354), together with pars posterior un- 
der the title: Phyceae Scandinaviae Marinae, 1850, p. 131— 
132). Since then a few species have been added and the 
genus has changed its place amongst the brown Algae, 
but not its extent. 
Calling attention to the fact that Ilea Fries 1825 was 
a synonyme of Enteromorpha, J. G. Agardh 1883 (Till Alg. 
