130 



PUCCINIA 



pale clear-brown, 45 — 60 x 20—2.") ll : pedicels brownish, persis- 

 tent, thick, about as long as the spore or longer; no mesospores 

 were seen, but some irregular spores. 



On Aster Tripolivm. New Pitsligo, 1870 (Herb. Berk.); 

 Wblferton Beach, King's Lynn, July — November, 1873 (Plow- 

 right). (Fig. 80.) 



The greyish tinge mentioned by Plowright seems to be due to germ- 

 tubes issuing from the spores of this Lejrtopuccinia. This species is 

 decidedly different from the American forms with which it is united by 

 Sydow ; there are no spots, the colour of the spore is paler, the apex not 

 so much thickened, and the sori are not confined to the lower leaf-surface. 

 M.my spores were observed bifid at the summit, but not owing to germi- 

 nation, which had not taken place in them. 



Distribution : Northern and Central Europe, Siberia. 



2. Puccinia Virgaureae Lib. 



Xyloma Virgaureae DC. Flor. fr. vi. 158. 



Puccinia Virgaureae Lib. Crypt. Arduen. iv. No, 393. Cooke, Handb. 



p. 500 ; Micr. Fung. p. 206. Plowr. Ured. p. 203. Sacc. Syll. 



vii. 679. Sydow, Monogr. i. 151. Fischer, Ured. Schweiz, p. 363, 



f. 264. 



Teleiitospores. Sori hypophyllous, minute, crowded in 



stellate or dendritic clusters, on round, 

 yellowish, purple-centred spots, com- 

 pact, shining, black ; spores oblong, 

 clavate or fusoid, above rounded, 

 attenuated or truncate, very much 

 thickened (as much as 12 ll) and 

 darker or with a paler hood-like cap, 

 hardly constricted, tapering below, 

 smooth, yellow-brown, paler down- 

 wards, 30 — 56x12 — 20^; pedicels 

 somewhat hyaline, half as long as the 

 spore. 



On Solidago Virgcmrea. August and September. Un- 

 common ; Surrey, etc. (Fig. 81.) 



The sori are arranged in a radiating fashion ; they are surrounded 

 each by a thick fence of dark-brown paraphyses, remain long covered by 



Fig. 81. P. Virgaureae. 

 Teleutospores. 



