MILDEWS, RUSTS AND SMUTS 
139 
ASPARAGUS 
Puccinia asparagi, D.C.; Plowr., Ured., p. 144. 
Pycnidi.i. Honey-colour. 
Aecidia On the stem, scattered, or sometimes in long 
clusters, remaining for a long time closed, then shortly cup¬ 
shaped, edge erect, white, torn ; spores angularly globose, 
very minutely warted, orange, 15—28 p, diam. 
Uredospores. Sori oblong, narrow, for a long time 
covered by the epidermis, cinnamon-brown ; spores globose 
. or elliptical, minutely echinulate, pale brown, 20—30 X 
17—25 p. 
Teleutospores. vSori elliptical, oblong or linear, scattered 
or collected in groups, often forming extended crusts on the 
stem, rarely on the leaves, dusky brown ; spores elliptical 
or oblong, tip rounded and very much thickened, scarcely 
constricted at the septum, base rounded, smooth, chestnut- 
brown, 35-—-52 X 17—26 p, pedicel persistent, colourless 
or tinged brown, as long or longer than the spore. 
On Asparagus officinalis. Britain, Europe generally, 
Abyssinia and N. America. 
This parasite often proves very destructive to cultivated 
Asparagus. 
ORNITHOGALUM 
Puccinia liliacearum, Duby; Plowr., Ured., p. 197. 
Pycnidia. Numerous, especially near the tips of the 
leaves, yellowish honey-colour. 
Aecidia. Generally scattered, minute, deeply immersed 
in the substance of the leaf, the edge scarcely protruding, 
whitish : spores angularly globose, or rarely elliptical, 
minutely warted, orange, 16—23 X 14—17 p. 
Teleuto spores. vSori often on the dry, yellow parts of 
the leaves, generally densely crowded, often growing into 
each other, for some time covered by the grey eipdermis, 
then naked and powdery, reddish-brown ; spores oblong, 
tip not thickened, rounded or narrowed, scarcely con¬ 
stricted at the septum, base narrowed, smooth, pale brown, 
40—75 X 25—35 p, pedicel stout, colourless, rather long. 
On living and faded leaves of Ornithogalum umbellatum. 
Britain and Europe generally. 
TULIPA 
Puccinia prostii, Mong. 
Teleuto spores. Sori on both surfaces of the leaf, spots 
none, scattered or in clusters, oblong, for a long time covered 
