A titciLpiiccin ia. 1 5 7 



garden, but without effect. This is the only Uredine affecting the 

 Umbellifene with which I have made any experimental cultures, and 

 I have therefore followed Winter and Schroter in grouping the various 

 spore-forms together under Puccinia pi)npinell(B and bitllata ; but it 

 is probable that biological research will show several of them to be 

 good species. 



Puccinia menthae. Pers. 



.^cidiospores — Pseudoperidia immersed, flat, opening irregularly, 

 edges torn ; principally on the stems, which are much swollen, 

 more rarely on concave spots on the leaves. Spores sub- 

 globose or polygonal, coarsely granular, pale yellowish, 17-26 

 X 26-35/x. 



Uredospores — Sori small, roundish, soon pulverulent and confluent, 

 cinnamon-brown. Spores irregularly rounded or ovate, echinu- 

 late, pale brown, 17-28 x 14-19/A. 



Tekutospores — Sori black-brown, roundish, pulverulent. Spores 

 elliptical, oval, or subglobose, central constriction slight or 

 absent, apex wath a hyaline or pale brown papilla, verrucose, 

 deep brown, 26-35 X 19-23,01. Pedicels long, delicate, 

 colourless. 



Synonyms. 



Puccinia menthcAi. Pers., "Syn.," p. 227. Winter in Rabh., 

 " Krypt. Flor.," vol. i. p. 204. 



yEcidium menthcB, D. C. Berk., " Eng. Flor.," vol. v. p. 369. 

 Cooke, " Hdbk.," p. 544; " Micro. Fungi," 4th edit., p. 199. 



Trichobasis labiatarum,'L€v. Cooke, " Hdbk.," p. 496 ; "Micro. 

 Fungi," 4th edit., p. 224. 



Trichobasis cliiwpodii, D. C. Cooke, "Micro. Fungi," 4th 

 edit., p. 224. 



Puccinia clinopodii, D. C. Cooke, "Micro. Fungi," 4th edit, 

 p. 205. 



Puccinia menthce, Pers. Berk., " Eng. Flor.," vol. v. p 364. 

 Grev., "Flor. Edin.," p. 430. Johnst., "Flor. Berw.," vol. ii. 

 p. 195. Cooke, "Hdbk.," p. 496; "Micro. Fungi," 4th edit, 

 p. 204, t. iv. figs. 69, 70. 



Uredo menthcs. Purton, "Midi. Flor.," vol. iii.. No. 1550. 

 Sow., t 398, fig. 3, sub yEcidium. 



