ON COMPOSITAE 131 
the epidermis and resemble rather a Dothidea or Asteroma than a Puccinia. 
The spores bear a slight resemblance to those of P. Poarum, but are more 
fusiform, and much more thickened at the apex. Mixed with them are 
sometimes a number of mesospores. 
DISTRIBUTION: Europe, except the southern parts. 
3. Puccinia Millefolii Fckl. 
Puceinia Millefolii Fckl. Symb. Myc. p.55. Cooke, Micr. Fung. p. 207. 
Plowr. Ured. p. 215. Sydow, Monogr. i, 2. Fischer, Ured. 
Schweiz, p. 296, f. 216. 
Teleutospores. Sori amphigenous, on indistinct spots, 
minute, roundish or irregular, gene- 
rally scattered, compact, dark- 
brown ; spores oblong or clavate, 
rounded or gently attenuated at the 
apex and thickened (4—9,), con- 
stricted, more or less tapering below, 
smooth, pale-brownish, 35—50 x 
13—19 w; pedicels yellowish above, 
thick, persistent, about 404 long; 
a few mesospores are sometimes 
intermixed, 
On Achillea Millefolium. For- 
den; St Leonards. August—October. (Fig. 82.) 
a8) 
Fig. 82. P. Millefolii. Teleuto- 
spores. 
Plowright demonstrated (/.c. p. 216) that this species is quite distinct 
from P. Tripoli, with which it had been previously united, and his con- 
clusion has been confirmed by Magnus and others. The species is rather 
uncommon ; there is a closely allied one on A. Ptarmica (P. Ptarmicae 
Karst.) which has not yet been seen in Britain. The spores of P. Mille- 
Jfolii germinate as soon as mature. 
DIsTRIBUTION : Central and Western Europe. 
4, Puccinia Chrysanthemi Roze. 
Uredo Chrysanthemi Roze ; Plowright in Trans. Brit. Myc. Soc. i. 98. 
Puceinia Chrysanthemi Roze, Bull. Soc. Myc. Fr. 1900, p. 92. Sace. 
Syll. xvi. 296. Sydow, Monogr. i. 46, 854. McAlpine, Rusts of 
Australia, p. 153, f. 251—5, and pl. E, f.21. Fischer, Ured. 
Schweiz, p. 190, f. 150. 
P. Chrysanthemi-chinensis Henn. in Hedwig. xl. 26 (1901). 
9—2 
