60 
Journal of Mycology 
[Vol. 8 
72. Puccinia mariae-wilsoni Clint. 
On Claytonia virginica L. 
Cincinnati, Ohio. May 15, 1902. 
Coll. Walter H. Aiken. 
“P. Mariae-Wilsoni Clinton. 
“Amphigenous; spots none; sori scattered or clustered, unequal, 
at first covered by the epidermis, then surrounded by its ruptured remains, 
reddish-brown; spores sub-elliptical, scarcely constricted, crowned with 
a pustule, .0013'-.0018' long, .0007'-.0008' broad.” Chas. H. Peck, Re¬ 
port on the State Museum, State of New York, 25:115. 1872. 
73. Puccinia taraxaci Plowright. 
On Taraxacum taraxacum (L.) Karst. 
Columbus, Ohio. June 10, 1902. 
Coll. W. A. Kellerman. 
“Puccinia taraxaci. Plow. 
“Spermogonia. —On yellow oval or rounded spots. Paraphyses not 
conspicuous. Spermatia globose or oval, 1-2 fx in diameter. 
“Uredospores-Primary : Sori scanty, large, dark, brown, elongated 
or circulating. Spores ovate, round, or subpyriform, echinulate, brown, 
25-30 x 25 ix. Secondary : Sori small, very profuse, round, cinnamon- 
brown, soon pulverulent, often confluent. Spores subglobose, brown, 
echinulate, 20-25 ^ in diameter. 
“ Teleutospores .— Sori amphigenous, minute, blackish, round, pul¬ 
verulent, surrounded by the ruptured epidermis. Spores obtuse, shortly 
oval, ovoid, or even subglobose, constriction almost none, brown, 
echinulate, especially above, 30-40 x 20-25 jx. Pedicels short, hyaline, 
deciduous.” Charles B. Plowright, A Monograph of the British Uredineae 
and Ustilagineae, 186. 1889. 
74. Puccinia taraxaci Plowright. 
On Taraxacum erythrospermum Andrz. 
Columbus, Ohio. May 18, 1902. 
Coll. F. J. Tyler. 
Supplement to No. 73. 
75. Rhytisma concavum EH. & Kellerm. 
On Ilex verticillata (L.) Gray. 
West Mansfield, Logan Co., Ohio. June 10, 1902. 
Coll. W. A. Kellerman. 
“Rhytisma concavum Ell. & Kellerm. n. sp. — Stromata epiphyllous 
but also visible below, forming thin, black, thickly scattered blotches, 1-4 
mm. diameter, orbicular or subangular, the surface uneven, surrounded by 
a pale yellowish, narrow margin, more or less concave below and the 
margin broader and paler, at maturity rupturing by radiating fissures, in 
the oblong forms a central elongated fissure also occurring and in the 
