272 BOTANICAL GAZETTE. | Oct., 
with the schemes of Dragendorff and others. I should suggest 
that analysis be made of each part of the plant, as of the root, 
stem, bark, wood, leaf, flower, and seeds; also of the separate 
organs of plants, i. e., in the flower, of the stamens, pistils, petals, 
calyx, and of various plants under various conditions of age, 
climate, soil and seasons. Under these conditions a comparison 
of chemical constituents with ‘plant structure would lead to a 
comprehension of the correlation between morphology and 
chemistry. 
BRIEFER ARTICLES. 
An interesting Peronospora.—The Peronospora graminicola Schr. is abund- 
ant here this season on Setaria viridis. Dr. Farlow gives a description of the 
species in the Boranrcal Gazerre, March, 1884, p. 39, after which he says: 
“This curious species, for which Schroeter has created the sub-genus Selerospora, 
has been found in several European countries, but is at present only known at. 
La Crosse (Mien-) in this country.’ The specimens gathered here are more 
vigorous, seemingly, than those from which the description of the species was 
made. For example, the conidiophores, instead of being solitary or sparingly 
branched, are clustered and much branched. But that which will most inter- 
est all lovers of the P p is the fact that this mildew attacks the spikes of 
the Setaria and frequently distorts the floral parts beyond all’ recognition. 
Herewith is shown! a “head” of the foxtail flowers, drawn natural size. In- 
stead of the apparently cylindrical spike, three or more inches long, with its 
many long bristles, there is a smooth head, or short spike of floral parts, 96 
shown at ain the engraving. Rarely more than one head in the same plant '8 
thus deformed. With few exceptions, the essential parts of the affected flowers 
are either abortive or wanting. At) is shown a spikelet double its natural 
size. The affected floral parts are usually of a purplish color, and abound in 
e odspores of the Peronospora. In many of the palets and flowering glumes 
the thick-walled, dark brown or chestnut odspores are so numerous as to occUPY 
nearly all the space within the epidermis. i 
her culms without flowers the upper leaves are frequently very stiff, 
upright and colored dark brown. In such the odspores have formed in count 
less numbers.—Byron D. Hatsrep, Agricultural College, Ames, Iowa. 
John Goldie, gardener and botanist.—John Goldie was born near May- 
bole, in the district of Carrick, Ayrshire, on the 21st March, 1793. Having 
ardening as an occupation, he was for a time under instructions 1» 
the art in the gardens of Kilkenam, a residence of the Fergusons, an A 
county family, situated on the Girvan river in Carrick. At an early period . 
his career he became associated with Mr. James Smith, well known in his dey 
1See plate VIIT. 
