208 PUCCINIA 
P. Pruni DC. Flor. fr. ii, 222 (1805). Plowr. Ured. p. 192. Sace. 
Syll. vii. 648. 
P. Prunorum Link, Sp. Pl. ii. 82 (1825). Cooke, Handb. p. 507; 
Micr. Fung. p. 211; Grevillea, iii. pl. 49, f. 11. 
Tranzschelia punctata Arthur, North Americ. Fl. vii. 151. 
Spermogones. Amphigenous, scattered, brown or blackish, 
very shallow, punctiform. 
Ajeidiospores. AKcidia hypophyllous, scattered over the 
whole surface, flat, with a 
broad revolute margin which 
a is torn into few (8—5) lobes ; 
spores roundish, pale yellow- 
ish-brown, finely verruculose, 
16—24 p. 
Uredospores. Sori hypo- 
“ b phyllous, generally on minute 
Fig, 168, 2. Pnatspinowe Zale coloured spots, seattered, but 
an ecidium on A. nemorosa, York- often crowded and confluent, 
Seni fe ee and }, twoless soon naked, pulverulent, cin- 
namon-brown; spores ellip- 
soid to fusiform, ovoid-oblong or sub-pyriform, smooth and 
more or less thickened at the summit in a conical shape and 
darker, paler and narrowed below, where they are sharply 
Fig. 156. P. Pruni-spinosae. Two teleutospores ; a, lower half of a teleuto- 
spore; b, uredospore; c, paraphysis; d, a cluster of teleutospores. On 
Wild Plum. (All x 600, except d, which is x 360.) : 
verrucose or echinulate, pale-brown, 20—85 x 10—18 yp (with 
three or four equatorial germ-pores, Arthur), mixed with 
yellowish-brown or pale capitate paraphyses more or less 
thickened at the apex. 
