36 The Botanical Gazette. [January, 
therefore I observed in the same house a leaf of a banyan (Picus reli- 
gtosus) spotted in precisely the same manner, so far as could be seen 
with the naked eye, there seemed to be little doubt that the disease 
had spread from the one species of Ficus to the other. The leaf in 
question was disfigured by the characteristic light colored, dead area 
surrounded by a dark border and dotted over with apparent perithe 
cia. Microscopic examination however showed that these were not per 
thecia of Leptostromella but were clusters of hyphe and spores of : 
species of Macrosporium. Farther investigation showed that the spol 
on the leaf was probably a burn, as greenhouse plants are often burned 
ina similar way bythe heating pipes and by the sun. The spol 
caused by Leptostromella look very much like such burns. On this 
dead area the macrosporium developed in many minute clusters and 
thus produced a remarkably exact imitation—-RaLpH E. SMITH, 4a 
herst, Mass. 
Two new species of Idaho plants.—Dr. J. H. Sandberg, in 1892, col 
lected two rosaceous plants quite distinct from all their near relatives; 
one a Fragaria, the other a Rosa. The generic characters are so pre 
nounced and so well-known by all botanists that it is superfluous t 
enter into long detailed descriptions. 
Fragaria Helleri, n. sp.—Aspect and leaves of F. vesca, but flower 
ing stems weak, 1 to 2 long: the large light rose-colored flowers 15 
to 2™ in diameter nodding on curved pedicels: scattered hairs amovg 
the superficial achenes: ripe fruit not collected. | 
Rosa Macdougali, n. sp.—Stem with few epidermal spines or fi 
quently none: infrastipular thorns none: leaves and size of flowe® 
nearly as in &. /uctda: flowers solitary at the ends of short lealy 
branches: fruits densely spiny.—By the last character this plant is al 
once distinguished from all other North American roses.—JOHN ™ 
HOLZINGER, Winona, Minn. 
