DIDYNAMIA ANGIOSPERMIA, 
518. OBOLARIA. Gen. pl. 1044. 
1. O. caule simplici, foliis oblongis truncatis carnosis subtus 
purpureis, floribus axillaribus solitariis sessilibus.— 
Willd. sp. pl. 3. p. 346, 
Icon. Pluk alm. t. 209. f. 6. Moris, hist. 3, s. 12. t.16. 
f. 39: 
ln shady rocky places: Pensylvania to, Virginia; rare. 
Not above three inches high ; flowers pale red, in a 
spike, supported by purple bracteas. 
d 
* 
519. OROBANCHE. Gen. pl. 1045. 
1. O. caule ramoso, floribus alternis distantibus, corollis de- 
: ciduis 4-dentatis.— W illd. sp. pl. 3. p. 351. 
Icon. Moris, hist. 3. s. 12. t. 16. f. 9. 
Parasitic on the roots of beech-trees : Canada to Georgia. 
X. July—Sept. v.v. Flowers small, purple. This 
plant is known by the name of Cancer-root, being 
thought to be a neyer-failing remedy in cancerous | 
-. *'. nlcers. 
2. O. caule simplicissimo squamis ovali-lanceolatis imbrica- 
tis obtecto, spica terminali glabra, corollis recurvatis, 
staminibus exertis,— Willd. sp. pl. 3. p. 351. 
Parasitic on the roots of trees : Pensylvania to Carolina. 
A. July. v.v. About a span high, of a brownish- 
yellow colour. ee 
3. O. scapis nudis unifloris, calyce ebracteato, corolla re- 
curvata .— Willd, sp. pl. 3. p. 352. 
Icon. Pluk. manut. t. 348. f. 3. 
Patasitic on the roots of different plants and shrubs : Ca- 
nada to Virginia. Y. June, July. v.v. Not above 
two or three inches high, of a tan colour ; flowers 
pale purple, 
ed 
431 
virginica, 
virginiana, 
americana, 
uniflora. 
