468 
The Ohio Naturalist. 
[Vol. XV, No. 5, 
Warren, Auglaize, Clinton, Adams, Union, Franklin, Shelby, 
Clarke, Richland, Madison, Green, Gallia, Clermont, Champaign, 
Fayette, Highland, Wayne. 
11. Circaea (Toum.) L. 
Perennial herbs; leaves opposite, dentate; flowers white in 
terminal and lateral racemes; hypanthium extended beyond the 
ovularly, sepals 2; petals 2; stamens 2; ovulary with 1 or 2 cavi¬ 
ties; fruit obovoid, indehiscent, bristly with hooked hairs. 
1. Leaves firm, rounded at the base, slightly toothed; bracts none. 
C. lutetiana. 
1. Leaves thin, cordate, strongly toothed; with minute bracts. 2. 
2. Petals as long as the calyx; fruit 2-locular, bristly. C. intermedia. 
2. Petals not so long as the calyx, fruit 1-locular, the hairs soft and tender. 
C. alpina. 
1. Circaea lutetiana L. Common Enchanter’s-nightshade. 
Erect finely pubescent herbs 1-2 ft. tall; leaves 1-4 in. ovate, 
acuminate, rounded at the base; flowers about % in., broad; 
fruit }s in. long, bilocular, covered with hooked hairs. General. 
2 . Circaea intermedia Ehrh. Intermediate Enehanter’s- 
nightshade. Plants S-1G in. tall; leaves thin, ovate, middle and 
upper ones cordate, teeth salient; minute bracts usually present; 
petals as long as the calyx; fruit as in the above species. No 
specimens. 
3. Circaea alpina L. Small' Enchanter’s-nightshade. Plant 
small 4-12 in. high, glabrate or pubescent, with ovate, coarsely 
dentate, leaves, usually cordate at the base, ^- 2^2 in. long; 
flowers about X 6 in. broad; fruit h 6 in. long with soft, hooked 
hairs, unilocular. Lorain, Summit, Hocking, Cuyahoga, Clarke, 
Ashtabula. 
