uly 1904] 
Notes 071 UredinecE . II 
163 
NOTES ON UREDINEAE. II. 
E. W. D. HOLWAY. 
PUCCINIA CARICIS-ASTERIS Arthur. 
An abundance of this Puccinia was found in 1902 on Carex 
sparganioides Muhl., following an aecidium on Aster sagittifolius 
Willd. growing with it. No other Aecidium or Puccinia was to 
be found in the vicinity. Plants of the Aster from another local¬ 
ity were placed in the greenhouse in 1903; teleutospores from the 
Carex were sown on them April 26; spermogonia appeared May 
4 and aecidia May 13; a second sowing was made May 6; sper¬ 
mogonia appeared May 12 and aecidia were collected May 17 
and May 20. The last infection was very strong, the plant being 
covered with aecidia, as the germinating teleutospores were 
scraped off into water and placed over the entire plant. 
PUCCINIA ALBIPERIDIA Arthur. 
Teleutospores from Carex pubescens Muhl. were sown on 
Ribes gracile Mx., April 26, 1903; aecidia were collected on May 
16; spermogonia appeared in great abundance. This species is 
I think one of the common Ribes aecidia, but field observations 
indicate that we have others and that the more common one 
with large cups on much thickened spots has teleutospores on 
another Carex. 
PUCCINIA RIPARIA Plolway n. sp. 
o. Spermogonia epiphyllous, very few, at first yellow, be¬ 
coming darker. 
I. Spots yellow, not thickened; aecidia hypophyllous, scat¬ 
tered, 1-6 in a cluster, or in greenhouse cultures covering a con¬ 
siderable portion of the leaf, margin recurved and split into 2-8 
sections; aecidiospores hyaline, globose, minutely roughened, 
22-26/*, mostly 22/* in diameter, walls thin. 
II. Uredosori hypophyllous, oblong, brown; uredospores 
borne on hyaline pedicels 35-40/* long, from which they easily 
fall when mature, brown, echinulate spines about 3/* apart, wall 
about 2/* thick, germ-pores 3, 26-33 x 22-26/*. 
III. Teleutosori hypophyllous, oblong, soon breaking 
through the epidermis which is persistent around them; teleutos¬ 
pores oblong to oblong-clavate, constricted at the septum, 30-40 x 
13-15/*; apex strongly thickened, 7-11/*, mostly 7-8/*; pedicel 
tinted, up to the length of the spore; upper cell mostly rounded, 
rarely pointed or truncate in the mature spore, 16-19 x II_I 5/U 
lower cell narrower, 13-19 x 10-12/*; wall thin. 
