MICHIGAN ACADEMY OF SCIENCE. 
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458. Rudbeckia kirta, Lin. Yellow Daisy. 
Dry fields. Common. 
There is a gigantic form in swampy grounds with large, ovate 
lower leaves and involncral scales as long, or nearly so, as the 
rays. 
459. Rudbeckea hirta, Lin., Var. pulcherrima, Farwell. Yellow Daisy. 
Swamps. Occasional. 
This form lias the lower half of the rays a beautiful brownish 
red. 
460. Rudbeckia laciniata. Lin. Cone Flower. 
Low grounds. Rare. 
461. Helianthus divaricates, Lin. Sunflower. 
Dry woods. Frequent. 
462. Helianthus giganteus, Lin. Sunflower. 
Swamps. Frequent. 
463. Helenium autumn ale, Lin. Sneezeweed. 
Low grounds. Frequent. 
464. Achillea occidentalis, Raf. Yarrow. 
Fields and open woods. Common. 
This plant is a commercial drug and is employed as a tonic, 
stimulant and astringent in disorders of the pelvic organs. 
465. Anthemis arvensis, Lin., Yar. agrestis (Wallr.) D. C. Corn 
Chamomile. 
Fields. Common. 
466. Anthemis Cotula, D. C. Mayweed. 
Waste places. Frequent. 
A commercial drug and employed as a sudorific and antispas- 
modic. 
467. Ereclitites liieracifolia (Lin.) Raf. Fireweed. 
Swamps. Frequent. 
The leaf is a commercial drug and is employed as a tonic and 
astringent in disorders of the mucous membranes. 
468. Senecio aureus, Lin. Life-Root. 
Swamps. Common. 
The leaves of this species is a commercial drug, which is em- 
ployed in female complaints. 
469. Senecio Balsamitae, Muhl. Ragwort. 
Marl bogs. Common. 
This is a glabrous form. 
470. Senecio Sp. Floccose woolv throughout at flowering time; stem 
leaves few and reduced, lyra.te, pinnatified or the uppermost 
entire; lower stem leaves and radical from orbicular to ovate, 
y 2 . to 3 Cm. long by W to 2 wide; petioles equalling or slightly 
longer than the blades. Dry or moist grounds. Rochester, 
Orion, Detroit. 
471. Arctium minus (Hill.) Bernh. Burdock. 
Waste places. Common. 
The leaves, seed, and young root are commercial drugs, and are 
used as alteratives and diuretics in rheumatism, syphilis, leprosy, 
etc. The root of the first year is official as Lappa. 
472. Carduus arvensis (Lin.) Robs. Canada Thistle. 
Waste places. Common. 
The rhizome is a commercial drug and is employed as an as- 
tringent in diarrhoea, etc. 
