ON COMPOSITE 157 



JScidiospores. iEcidia hypophyllous, evenly spread over the 

 whole leaf-surface, flat, with white margin ; spores delicately 

 verruculose, yellowish, 15 — 25 x 14 — 20 fx,.] 



Uredospores. Sori amphigenous, minute, roundish, scat- 

 tered, surrounded by the epidermis, cin- 

 namon; spores globose to ovoid, delicately 

 aculeate, brown, 20 — 24 x 16 — 20 yu,, 

 with two or three germ-pores. 



Teleutospores. Sori hypophyllous, 



rarely also epiphyllous, minute, long 



covered by the epidermis, blackish-brown; Fig. 108. P. Crepidis. 

 „■ • -i . • i 11,1,1 Teleutospores (Antrim). 



spores ellipsoid to ovoid, rounded at both 



ends, not thickened above, scarcely or not at all constricted, 

 very delicately punctate (?), chestnut-brown, 20 — 30 x 17 — 22/a ; 

 epispore thin ; pedicels hyaline, very slender. 



On Crepis virens. Rare. August. (Fig. 108.) 



This species seems to be very rare. It is recorded for Scotland 

 (Moray, Rev. Jas. Keith) in Scot. Nat. 1884, p. 270, and I have a specimen 

 showing teleutospores from Ireland (J. Adams), but I have not seen the 

 tecidia on British specimens. The punctations were not discernible on 

 the teleutospores. 



Distribution : Central Europe. 



31. Puccinia major Dietel. 



JEcidmm Compositarum var. Prenanthis Cooke, Handb. p. 542 ; Micr. 



Fung. p. 198. 

 Puccinia Lapsanae Plowr. Ured. p. 149 p.p. 

 P. major Dietel, Mitth. Thiir. Bot. Ver. 1894, heft vi. Sacc. Syll. 



xiv. 310. Sydow, Monogr. i. 66. Fischer, Ured. Schweiz, p. 214. 



Spermogones. Generally hypophyllous, on reddish or yellow- 

 ish spots. 



jEcidiospores. iEcidia hypophyllous, often surrounding the 

 spermogones, on the same thickened spots, in roundish clusters 

 or more often forming oblong patches on the nerves and petioles; 

 shortly cylindrical, with white torn erect margin ; spores ovoid 

 or rarely subglobose, delicately verruculose, orange, 20 — 30 x 

 16— 24 M . 



