180 
FIFTEENTH REPORT. 
288. 
289. 
290. 
291. 
292. 
293. 
294. 
295. 
296. 
297. 
298 . 
Rhus hirta (Lin.) Sudw., Var. typhina (Lin.) Staghorn Sumach. 
R- typhina Lin. Cent. PI. II, 139, in Amen. Acad. IV, p. 311, 
1759. 
The ordinary form with pinnate leaves. The typical form with 
more or less continent leaflets is common at Algonac. 
Rhus radicans, Lin. Poison Ivy. Poison Oak. 
High climbing on trees, often 40 to 60 feet. Common. 
The leaves are a commercial drug, and were official under the 
title of Rhus Toxicodendron. A stimulant narcotic employed in 
some skin diseases, dropsy, chronic rheumatism, etc. To some 
people poisonous to the touch, producing a skin eruption. Others 
are immune. 
Rhus Yernix. Lin. Poison Sumach, Poison Elder. 
Swamps. Common. 
Family 49. Celastraceae. 
Euonymus obovatus, Nutt. Strawberry Bush. 
Open woods. Common. 
Celastrus scandens, Lin. False Bittersweet. 
Thickets. Occasional. 
The bark of the root is a commercial drug; in medicine it is 
employed as an alterative and diuretic in tuberculosis, syphilis, 
hepatic, rheumatic and cutaneous affections. 
Family 50. Aceraeeae. 
Acerum nigrum, Mx. Black Maple. 
Woods. Common. 
Acer rubrum, Lin. Red, Swamp or Soft Maple. 
Woods. Common. 
The bark is a commercial drug and is employed in medicine as 
a mild astringent. 
Family 51. Balsaminaceae. 
Impatiens biflora, Walt. Touch-me-not. 
Low wet grounds. Common. 
The leaves are a commercial drug under the name of Jewel 
weed, or Wild Celandine, and are employed in medicine as an 
astringent and diuretic in Rhus poisoning, scrofula and rheuma- 
tism. 
Order XXIII. Rhamnales. 
Family 52. Zyzvphaceae. 
Rhamuus alnifolius, L’Her. Buckthorn. 
Swamps. Common. 
Family 53. Yitaceae. 
Yitis vulpina, Lin. Grape. 
Banks. Common. 
Psedera vitacea (Ivnerr) Greene. Virginia Creeper. 
Thickets. Occasional. 
The bark of the root, is a commercial drug under the name of 
American Ivy; alterative and expectorant; employed in dropsy 
and lung troubles. 
Order XXIV. Mai vales. 
Family 54. Tiliaceae. 
