224, PUCCINIA 
Disrrisution: Central and Northern Europe, Siberia, 
North America. 
94. Puccinia Oxyrie Fckl. 
Puccinia Oxyriae Fckl. Symb. Nacht. iii. 14. Cooke, Grevillea, xi. 15. 
Plowr. Ured. p. 194. Sace. Syll. vii. 642. Sydow, Monogr. i. 567. 
Fischer, Ured. Schweiz, p. 135, f. 102. 
Uredospores. Sori amphigenous, generally hypophyllous, 
on minute purplish spots, scattered or aggregated, rounded, 
sometimes confluent, surrounded by the cleft epidermis, cinna- 
mon; spores globose to ovate, delicately echinulate, yellow- 
brown, 23—30 x 20—26 p. 
m 
Fig. 172. P. Oxyriae. Teleutospores (from a Swiss specimen). 
Teleutospores. Sori on the leaves similar, but also on the 
petioles and peduncles and then elongated, pulverulent, black- 
brown; spores oblong to obovate, rounded and slightly thick- 
ened or hooded above, constricted, generally rounded below, 
marked in the upper part with little unevennesses, almost as if 
corroded, brown, 30—46 x 15—25 uw; pedicels nearly hyaline, 
deciduous, rather long. 
On Oxyria digyna (reniformis). Rare; Skye (Buchanan 
White), Braemar (Prof. Trail). August. (Fig. 172.) 
The teleutospores were described by the older authors as smooth ; but, 
as Lagerheim first pointed out, they are really provided with faintly 
perceptible markings, especially visible towards the summit. 
DisTRIBUTION : Switzerland, Norway, Iceland, Colorado. 
