302 BULBS AND TUBEROUS-ROOTED PLANTS. 
Seitg., closely related to the Pythiums, which are among 
the worst enemies known upon the potting bench or in 
the greenhouse. osellinia Massinkii, Sacc., thrives 
upon the bulbs, whet perhaps, the worst of all, is Bacil- 
lus hyacinth, Wakk., 
Trey., which is Ss 
as the Hyacinth Disease, 
and will be considered 
later. 
The Tulips have two 
species of the rust, name- 
ly, Puccinia tulipa, 
Schw., and P. Prostit, 
Mong., both thriving 
upon the leaves. There 
is a smut, Ustilago tulipa 
(H.), Wint., of the Tulip, 
as the specific name indi- 
cates. Not the least de- 
structive, particularly to 
the bulbs, is a gray mold, 
Botrytis parasitica, Cav., 
which is closely related 
to the Botrytis causing 
the trouble among Lilies, 
a. known as the Lily Dis- 
4 ease. (See engraving.) 
} The Narcissus has a 
rust preying upon it, 
namely, Puccinia Schroe- 
theri, Pass., that some- 
times is quite destructive 
to the Narcissus poeticus. 
A rust upon the Crocus is known to science as Uromyces 
croci, Pass., affecting the foliage in particular. The 
Gladiolus has a rust, Urocystis gladioli (&), Sm., upon 
yey 
LILY ATTACKED BY BOTRYTIS 
FUNGUS. 
