Tur MrIcRoscore. 57 
between the Dalmatian insect flower, and the flower of the Hunga- 
rian daisy, will be noticed by comparison of the sketches, and the 
great difficulty in detecting the sophistication appreciated. The 
Hungarian daisy is thus described: Stems angled, the dried flower- 
heads averaging about half an inch in diameter, the ray florets being 
twisted and folded. When soaked in water to their natural size, the 
flower-heads average 14 inches in diameter from tip to tip of the 
ray florets. The involucre broadly campanulate imbricate, the scaly 
margins chaff-like, the steni being deeply inserted makes it distinctly 
depressed or concave; greenish-gray in color, glabrous. Receptacle 
prominent, sub-globular (Figs. I, IT and III) convex, dark colored. 
The ray-florets, numbering about eighteen, are white ligulate, nerved, 
three-toothed pistillate; the appendages of the style extending beyond 
the tube. The achenia angled without pappus, but crowned with a 
faint margin. 
The Dalmatian insect flower (Chrysanthemum cineraricfolium, \ 
—Boce.) presents the following characteristics: Stem angled, the 
whole flower-head ashy gray in color and quite pubescent. Dried 
flower-heads +, to 2 inch in diameter, the ray florets being twisted and ~ 
folded, and frequently broken off. When soaked to the natural 
size, about 14 inches in diameter, including the ray florets. The 
involucre imbricate, the scaly margins membranous, campanulate 
and convex, without depression at place of attachment of stem. | The 
receptacle small, conical, naked, solid, and light greenish-gray in 
color. The ray-florets, numbering about eighteen, are white, ligu- 
late, nerved, three-toothed, the tube pubescent, pistillate; the 
appendages of the style protruding beyond the short tube. The 
achema angled and nearly as long as the tube, crowned with a mem- 
branous (Figs, IV, V, VI), notched (eroded) pappus. The disk-florets 
numerous, gray, tending toward light yellow in color, tubular, five- 
toothed, the stamens included. The florets of the true insect powder 
are somewhat larger than those of the Hungarian daisy. The latter 
is distinguished from the true Pyrethrum by the orange-yellow disk. 
florets, by the depression of the involucre, by its prominent dark 
receptacle, and the absence of pubescence and pappus. The odor is 
less pungent than that of the true insect flower, being more like that 
of matricaria. The difference in odor is more pronounced on infu- 
sion in warm water. The Hungarian daisy yields a powder some- 
what darker in color. Microscopically no difference could be detect- 
ed between the two powders. Mr. William Kirkby* has written of 
* Year Book of Pharmacy, and Trans. Brit. Pharmaceut. Soc., 1888, p. 376. 
