162 PUCCINIA 
rarely observed. I have pointed out elsewhere that it is on spring 
flowering plants of this kind that Micropucciniz would naturally arise (as 
well as on alpine plants), if they are the result of an adaptation to a 
shortened vegetative period. Uromyces Ficariae may be taken as another 
instance of a similar character. 
85. Puccinia albescens Plowr. 
Aicidium albescens Grev. Fl. Edin. p. 444. Cooke, Handb. p. 536 ; 
Micr. Fung. p. 194. 
Puccinia albescens Plowr. Ured. p. 153. Fischer, Ured. Schweiz, 
p. 144, f. 110. 
P. Adoxae Hedw.; Cooke, Micr. Fung. p. 209 p.p. Sace. Syll. vii. 
612 p.p. Sydow, Monogr. i. 203 p.p. 
Spermogones. Scattered among the ecidia, yellowish. 
Aicidiospores. Scattered uniformly over the whole surface 
of the leaves, also on the petioles, shortly cylindrical, whitish- 
yellow, with a deeply cut revolute margin; spores finely warted, 
pale-yellowish, 15—22 pw. 
Uredospores. Sori minute, scattered singly or in little 
clusters, soon naked, brown; spores globose to ellipsoid, echinu- 
late, pale-brown, 21—28 x 18—25 yw, with two germ-pores. 
Teleutospores. Sori similar, or teleutospores at first in the 
same sori as the uredospores ; spores 
= ellipsoid to subfusiform, rounded or 
[\ attenuated above, with a conspicuous 
colourless papilla, usually more or 
less rounded below, hardly con- 
i 
stricted, smooth, chestnut- brown, 
Fig. 113. P. albescens. 32—45 x 1425; pedicels hyaline, 
Teleutosperss. delicate, short, deciduous. 
On Adoxa Moschatellina. The xcidia appear in April or 
even in March, uredo- and teleutospores in May and June. 
Apparently not uncommon in the ecidium stage, which makes 
the affected leaves paler and dwarfed; but see the following 
paragraphs. (Fig. 113.) 
The uredo- and teleutospores seem to be rare in a natural state, 
although Schréter, Nielsen, Soppitt and Fischer have all produced them 
in small quantity artificially from the wcidiospores; the latter laid affected 
