Micropuccinia. 201 
Puccinia schneideri. Schrot. 
Teleutospores—Mycelium pervading the stems and leaves of the 
affected plants, causing an increase in length of the former, 
and more or less crumpling of the latter. Sori small, black- 
brown, for some time covered by the epidermis, usually 
elongated, pulverulent. Spores elliptical, rounded at both 
ends, apex thickened, medial constriction pronounced, smooth, 
chestnut-brown, 25-28 X 15-184. Pedicels deciduous, 
colourless. 
Synonyms. 
Puccinia schneidert. Sehrot., “ Krypt. Flor. Schl.,” vol. iii. 
P. 344 
Puccinia caulincola. Schneider, 48, Jahresber d. Schles. Ges., 
1870, p. 120. 
On Thymus serpyllum. 
June to October. 
Links., Aberdeen ; Prof. J. W. H. Trail. 
BIOLOGY.—The presence of the mycelium in the affected stems 
causes them to assume a more erect habit of growth, so that they 
can be distinguished from the healthy plants by the naked eye. 
Puccinia zegopodii. (Schum.) 
Teleutospores—Sori on brown spots, on the leaves, small, roundish, 
crowded, on the petioles generally larger, at first yellow, then 
brown. Spores elliptical, oval, or subpyriform, constriction little 
or none, apex generally surmounted by a paler papilla, dark 
chestnut-brown, 30-40 X 15-23p. Pedicels colourless, 
deciduous. 
Synonyms. 
Luccinia egopodi (Schum.). Winter in Rabh., “ Krypt. Flor.,” 
vol. i. p. 174. 
Credo egopodii. Schum., “Enum. Plant Sell.,” vol. ii. p. 233. 
Puccinia egopodit, Link. Berk., “Eng. Flor.,” vol. v. p. 366. 
Cooke, “Hdbk.,” p. 502; “Micro. Fungi,” 4th edit, p. 208. 
Grev., ‘Flor. Edin.,” p. 429. 
