Asclepiadacece and Gentiahabeoe. 
85 
Asclepiadacece. (Milkweed Family.) 
Asclepias, L. Milkweed. Silkweed. 
368. **A. tuherosa , L. Buutterfly-weed. Pleurisy-root. 
Dry open woods. Common. 
369. A. purpurascens , L. Purple milkweed. 
Abundant in low meadows and pastures. 
370. *A. incarnata, L., var. pulchra, Pers. Swamp milk¬ 
weed. 
Not uncommon in low land. 
371. *A. Cornuti , Decaisne. Common milkweed or silkweed. 
Common everywhere. 
372. A. obtusifolia , Michx. 
Along C. M. & St. P. R. R. west of Madison. Not 
common. 
373. A. phytolaccoides, Pursh. Poke milkweed. 
Occurring occasionally along railroads. 
374. A. ovalifolia , Decaisne. 
Dry places west of Madison. Local. 
375. A. verticillata, L. 
A few specimens collected along C. & N. W. R. 
R. south of Madison. Rare. 
Acerates, Ell. G-reen milkweed. 
376. A. longifolia , Ell. 
Sandy knoll northeast of Mendota. Along railroad 
west of Madison. Local. 
377. A. viridiflora , Ell. 
In sandy places. Not common. 
378. A. lanuginosa , Decaisne. 
Lawn near Washburn Observatory, University of 
Wisconsin. Dry hill west of Madison. Rare. 
Gentianace^:. (Gentian Family. ) 
Gentiana, Tourn. Gentian. 
379. G. crinita , Froel. 
Not rare in low wet meadows. 
