ON UMBELLIFER.E 185 



the petioles sometimes very large, scattered or confluent, 

 roundish, pulverulent, blackish-brown ; spores ellipsoid to ob- 

 long, rounded above, not thickened, hardly constricted, rounded 

 or gently attenuated below, smooth, brown, 30 — 50 x 15 — 23 /a; 

 pedicels hyaline, thin, deciduous, about as long as the spore. 



On Apiam graveolens. Not common. iEcidia in May and 

 June ; teleutospores September — November. Distinguished 

 from many of its close allies by the possession of an aecidium. 

 (Fig. 132.) 



Distribution : Central and Northern Europe, East Indies, 

 Japan, Tasmania. 



57. Puccinia iEgopodii Mart. 



Credo JEgopodii Schum. Plant. Sail. ii. 233. 



Puccinia JEgopodii Mart. Fl. Mosquen. p. 226. Cooke, Handb. p. 502 ; 



Micr. Fung. p. 208. Plowr. Ured. p. 201. Sacc. Syll. vii. 678 p.p. 



Sydow, Monogr. i. 353. Fischer, Ured. Schweiz, p. 105, f. 79. 



Teleutospores. Sori amphigenous, but chiefly on the petioles 

 and nerves, on thickened yellowish spots, 

 small, but collected into dense irregular 

 clusters and confluent, at first black, 

 covered by the shining epidermis which 

 splits in places longitudinally, soon naked, 

 pulverulent, blackish-brown ; spores ob- 

 long 1 to ovoid, often irregularly angled and 

 oblique, usually rounded above and with ' Teleutospores'. 



a pale wart-like apiculus 2 — 3 u high, 



hardly or not at all constricted (often broadest at the septum), 

 more or less rounded below, smooth, clear chocolate-brown, 

 granular, 28 — 48 x 15 — 22 /x; pedicels hyaline, short, deciduous. 



On jEgopodium Podagraria. April — August. Rather com- 

 mon. (Fig. 133.) 



According to Tranzschel, a few isolated uredospores are to be found 

 in the young sori; they are almost colourless, aculeate, 20 — 22x18/^. 

 Semadeni proved that the spores of this fungus would infect only 

 Mgopodium, and not any of the allied Umbellifers. In this species, 



