ON GERANIACEAE 103 
with a flat, broad, hyaline papilla, at first smooth, then covered 
with more or less distant, broadly conical, obtuse, subhyaline 
warts, chestnut-brown, 20—30 x 18—24 w; epispore 2—24 uw 
thick; pedicels hyaline, deciduous. 
On Euphorbia exigue. Rare; Hampshire, Mr Hill (Plowr. 
l.c.); King’s Cliffe, Norths. (Grevillea, l.c.). Midlands (Purton, 
ic). (Fig. 56.) 
For a long time this species was considered to have only uredo- and 
teleutospores, but the connection of these with the zcidium occurring on 
the same species of Huphorbia was established by Tranzschel. Berkeley, 
at King’s Cliffe, found them all together. The description given above is 
partly founded upon those of Tranzschel, Sydow, and Fischer. The 
mycelium of the ecidial stage infests the whole plant, that of the teleuto- 
spores is more or less localised. 
DISTRIBUTION: France, Germany, Switzerland. 
17. Uromyces Geranii Otth et Wart. 
Adium Geranit DC.; Cooke, Handb. p. 543; Micr. Fung. p. 199 p.p, 
Trichobasis Geranti Cooke, Handb. p. 530. 
Uromyces Geranit Otth et Wartm. Schweiz. Krypt. no. 401. Cooke, 
Micr. Fung. p. 213. Plowr. Ured. p. 126. Sacc. Syll. vii. 535. 
Sydow, Monogr. ii. 190. Fischer, Ured. Schweiz, p. 16, f. 14. 
Spermogones. Mixed with the ecidia, orange. 
4Aicidiospores. Aicidia hypophyllous or on the petioles, on 
the leaves chiefly in the vicinity of the nerves and there 
forming large dense clusters on thickened spots, on the petioles 
forming elongated clusters and often causing great distortion, 
at first hemispherical and closed, then opening by a round pore, 
at length with a very slightly revolute incised margin, orange ; 
spores somewhat ovate, densely and minutely verruculose, yellow, 
2228 x 18—24 wu; epispore rather thick. 
Uredospores. Sori hypophyllous, generally on brownish or 
reddish-yellow spots, scattered or gregarious, minute, rounded, 
pulverulent, cinnamon, surrounded by the cleft epidermis; 
spores globose to obovate, sparsely echinulate, brown, 20—80 x 
18—24 4; epispore about 2, thick, with one (rarely two) 
germ-pores. 
