370 UREDINEAE. 



Klebahn and Fischer 1 assert that several other species of 

 Coleosporium produce their aecidium-stage on Pint's syfoestris. 



C. euphrasiae (Schum.) (Britain). Uredospores produced from 

 reddish-yellow, teleutospores from orange-red patches din-in- 

 July and August on various Hhinanthideae (Hhinanthus major, 

 Pi. minor, Bartsia Odontitcs, and E-uplirasia officinalis). The 

 spores from l!liiii<uitlit/s germinate on needles of Pinus sylvcstris 

 and produce an aecidium called Pcridermium Staldii Kiel). 

 The aecidiospores of P. Stahlii average 26/x in length, 19'5/x. 

 in breadth, and are round or shortly oval, with a coat and 

 markings finer than those of P. oblongisporium. The uredo- 

 spores average 22/x x 15'5/u; they are irregular and somewhat 

 angular, with a thin finely marked coat. 



C. melampyri (Eeb.) (Britain). Uredospores on Mi'lum- 

 ji/f/'tim (certainly on M. pmtense). The aecidia Pcridermium 

 Soraueri Kleb. follow after a year on needles of Pint's sylresfn.^ 

 The spermogonial pycnidia alone are developed in the summer 

 of infection. 



C. tussilaginis (Pers.) (Britain). This Coleosporium is found 

 all summer on the underside of leaves of Tvxxilnyo farfn>, 

 the uredospores forming yellow patches, the teleutospores darker- 

 coloured ones. Aecidia are produced on needles of Piim* 

 xi/l rcstris, and are known as Pcridermium Plowriglitii. Pycnidia 

 and aecidia are formed in the summer following infection. 

 The aecidiospores average 25'5/x x 19/u and are shortly oval 

 or round, with coats and markings more delicate than those 

 of P. Stahlii. The uredospores average 26/a x 1 9/x and are 

 roundish oval with somewhat firmer and thicker coats than 

 those of C. cupJirasiae. 



Klebahn's infections of PrA/.s/'/v.s with aecidiospores from 7V//".-. 

 gave no result. 



C. inulae Kunz. Spores of this obtained by Fischer 2 from 

 Jiinlii VaiUantii and /. ffelcnium produced Pcridermium Khlialiin 

 Fisrh. on needles of Pinus sylrcstris. 



C. sonchi (Pers.) (Britain and U.S. America). Klebahn 

 considers this as a provisional species including a number of 

 imperfectly investigated forms whose uredo- and teleutospores 



1 Berichte d. tleutxch. liotan. Ges., 1894; Zeitm-hrlft f. Pjlanztnknni'klH it(n, 1894, 

 and 1895, p. 73. 



-Botan. Centralblatt, LIX., 1894, p. 1. 



