268 British Uredinee and Ustilaginee. 
On Phillyrea media. 
BIoLoGy.—This is a doubtful A.cidium, being little more: than a 
condition of Ceoma phillyrea, as far as I have observed it. 
A&cidium gilaucis. Dozy and Molk. 
Pseudoperidia irregularly scattered, sometimes circinating, in 
various-sized groups, shortly cylindrical or flattish, with white 
torn edges. Spores polygonal, finely granular, colourless, 
16-25 & I5-20p. 
Synonym. 
cldium glaucis. Dozy.and Molk., Zidschr. v. Natur. Ges., 
vol. xii. p. 16. Cooke, “ Grevillea,” vol. xv. p. 29. Winter, 
loc. cit., p. 262. 
On Glaux maritima. 
Aicidium poterii. Cooke.. 
Pseudoperidia hypogenous in subrotund or elongate clusters on 
the leaves, also upon the petioles, scattered or circinate, 
immersed, edges torn into minute fugacious teeth. Spores 
yellowish, oval. 
Synonym. 
Aicidium poterti. Cooke, Seem. Jour. Bot., vol. ii. p. 39, t. xiv. 
fig. 3; “ Hdbk.,” p. 540; “ Micro. Fungi.,” 4th edit, p. 198. 
On Poterium sanguisorba. 
May and June. 
Probably this is the species referred to by Mr. Berkeley in 
the “Eng. Flor.,” vol. v. p. 373, as having been found by Dr. 
Greville, 
** Mycelium perennial, diffused in the host-plant. 
Aicidium punctatum. Pers. 
Pseudoperidia uniformly scattered over the whole of the foliage, 
hypophyllous, flat, semi-immersed, with torn yellowish edges. 
Spores subglobose, pale yellowish-brown, 15-24 in diameter. 
Spermogonia scattered, blackish, punctiform. 
