156 COMPOSITE. 



Dry soils. Penn. to Flor. W. to Miss, ifeept. ^.Stem 2 feet high, hairy; 

 especially near the base, branching towards the summit. Heads composed of 

 four clusters, each 4-flowered, with the involucre 9 10-leayed. Corolla purple. 



Carolinian ElepJiant's-foot. 



II. EupATORiACE^E. Style of the perfect flowers cylindrical ; its 

 branches long and clavate, with a papillose surface on the outsid?. 

 near the end. 



3. SCLEROLEPIS. Cass. Sclerolepis. 



(.From the Greek cxA^poj, hard, and \cms , a scale ; in allusion to the scales ot 

 the pappus.) 



Heads many-flowered. Involucre with the scales in two 

 series, linear and equal. Receptacle naked. Corolla tubular, 

 smooth, 5 -toothed, the throat scarcely distinct from the tube. 

 Style branching, exsert, cylindric-clavate. Achenia 5 -angled. 

 Pappus of 5 somewhat corneous short oval and obtuse scales 

 in one row. 



S. verticillata Cass. D.C. Sparganophorus verticillatus Mkh. 



In shallow water. N. J. to Flor. Aug., Sept. 1\.. Stem 12 feet high, 

 simple, a little pubescent at the top. Leaves linear, an inch long, 6 8 in a 

 whorl. Heads few, terminal, purple. Whorled Sclerolepis. 



4. KUHNIA. Linn. Kuhnia. 

 (In honor of Dr. Adam Kuhn, of Penn.) 



Heads many-flowered. Scales of the involucre imbricated in 

 two or three series. Receptacle naked. Corolla with the limb 

 not distinct from the tube. Achenia elongated, sessile or stiped. 

 Pappus in a single series, plumose. 



1. K. eupatoriaides Linn.: stem herbaceous; leaves broad-lanceolate, 

 serrate ; corymbs paniculate, terminal, few-flowered. 



Shady woods- N. J. and Penn. to Flor. Aug., Sept. fy.Stem 23 feet 

 high, slender, somewhat branched. Flowers whitish. Resembles an Eupatorium. 



Hempweed-like Kuhnia. 



Q.K.panicidata Cass.: stem herbaceous ; leaves linear or linear-lanceolate, 

 entire, younger ones with the margin revolute ; panicle corymbose, spread- 

 ing, many-flowered. (Z>. C.) K. Critonia Willd. K. eupatorimdes var. gra- 

 r.ilis Torr. fy Gr. 



Mountains. Penn. to Ala. Aug., Sept. 1\. Stem 2 3 feet high, slender, 

 often dark purple. Heads in a large panicle, consisting of many corymbose 

 Clusters. Flowers pale yellow. Panicled Kuhnia. 



5. LIATRIS. Schreb. Liatris. 

 (Origin of the name unknown.) 



Heads few, many-flowered. Involucre with few or numerous 

 imbricate scales. Receptacle naked. Corolla tubular, 5-lobed ; 

 the lobes elongated. Style with the branches much exserted. 



