278 PUCCINIA 



Brunella = /Ectdium Prunellae Wint. . This was found by Fischer in 

 Switzerland, and the connection of the two hosts was proved by Cruchet. 

 To this, doubtless, belongs the secidium found on Prunella vulgaris by 

 Dr Keith at Forres Plowr. Ored. p. 264), and Dr Buchanan White's 

 Puccinia on Molinia may belong there likewise. The apes of the teleuto- 

 spores in his specimens is, however, much less strongly thickened than in 

 the figures given by Fischer. 



DISTRIBUTION : Throughout Europe, exccpl the south. 



131. Puccinia Poarum Niels. 



.K< -iii 'i'i in Tussilaginis Gmel. in Linn. Syst. Nat. ii. 1473. 



.K. Compositarum var. Tussilaginis Cooke, Handb. p. 542; Micr. 

 Fung. p. 198. 



Pucemia Poarum Niels, in Botan. Tidsskr. ii. 26. Phill. et Plow. 

 Grevillea, xiii. 54. Plowr. [Jred. p. 168; Grevillea, xi. 52. S 

 Syll. vii. 625. Sydow, Monogr. i. 795. Fischer, Ural. Schweiz, 

 pp. 361, 556, f. 263. McAlpine, Rusts of Australia, p. 128, f. 22. 



Spermogones. Epiphyllous, pale-yellow, often very numer- 

 ous. 



.Ecidiospores. JEcidia hypophyllous, usually in dense 

 clusters on circular yellowish or reddish thickened spots 

 1 — 2 cm. diam., seldom scattered, cup-shaped, with a dentate 

 white revolute margin ; spores verruculose, orange, 18 — 25 x 

 16—20/*. 



Uredospores. Sori on the leaves, sometimes on the culms, 

 minute, roundish or elliptic, soon naked, yellow ; spores globose 

 to ellipsoid, densely and minutely verruculose, yellow, 17 — 28 x 

 17 — 25 /a. with about five scarcely perceptible scattered germ- 

 pores, and intermixed with numerous, hyaline, capitate para- 

 physes. 



Teleutospores. Sori similar, oblong or linear, more or less 

 in short rows, long covered by the epidermis, surrounded by 

 a small pale area, black : spores oblong-clavate, cylindrical, or 

 obconical, variable, rounded, truncate, or rarely conically at- 

 tenuated above where they are slightly thickened (4 — 8 /n), 

 hardly or not at all constricted, more or less tapering below, 

 smooth, chestnut-brown, becoming gradually paler downwards 



