THE UREDINEAE AND USTILAGINEAE OF ESSEX. 3
P. caricis Schum.
AE. On Urtica dioica, Maldon (J. Matthams).
U. On Carex pendula, Roxwell! Broomfield! Manning-
tree !
T. On C. pendula, Manningtree !
*P. trailii Plow.
U. and T. On Phragmites communis, Manningtree !
P. persistens Plow.
AE. On Thalictrum flavum, Maldon (J. Matthams).
P. suaveolens Pers.
U. and T. On Centaurea Cyanus, Halstead!, Chelms-
ford!
P. bullata Pers.
U. and T. On Conium maculatum, Dovercourt (W. R.
Sherrin).
*P. chrysanthemi E. Rott.
This, the too well-known chrysanthemum rust, is now
regarded by most authors as a species distinct from
P. hieracii under which it was placed in my previous list.4
It is found wherever chrysanthemums are cultivated in
Essex, but appears more abundant in the country than
the town. The localities from which I have specimens
of the uredo form are Chelmsford !; Maldon!; Rom-
ford !; Sturmer !; Broomfield ! I have not yet seen the
teleutospores.
P. centaureae Mart.
U. and T. On Centaurea nigra, Norton Heath !
P. oblongata Corda.
U. and T. On Luzula sp., Little Baddow Common.
P. pruni Pers.
U. and T. On Prunus domestica, Chelmsford !
*P. smyrnii Corda.
AE. On Smyrnium olusatrum, Tollesbury (B. Peacocke).
P. betonicae Alb. and Schw.
T. On Stachys betonica, Little Braxted !
Phragmidium tormentillae Fuckl.
U. and T. On † Potentilla reptans, Markshall (E. E.
Turner).
4 See Roze. Bul. Soc. Mycol. Fiance, 1900, p. 92, c. icon. Saccardo. Syll. XVI. 1045.