3M 



COMPOSITAE. 



[Vol. III. 



Style-branches long, obtuse. Achenes io-striate or io-ribbed. Pappus a single row of nu- 

 merous rough or serrate bristles. [Greek, sheath-flower.] 



A genus of about 60 species. Besides the following- some 40 others occur in the southern and 

 western United States. 



Large- flowered 



1. Coleosanthus grandiflorus (Hook.) Kuntze 



Thoroughwort. (Fig. 3633.) 



Eupalorium grandifloriim Hook. 



Fl. Bor. Am. 2: 26. 1834. 

 Brickellia grandiflora Nutt. Trans. 



Am. Phil. Soc. (II) 7: 287. 1841. 

 Coleosanthus grandiflorus Kuntze, 



Rev. Gen. PI. 328. 1891. 



Erect, glabrous or puberulent, 

 much branched, 2-3high. Leaves 

 slender-petioled, deltoid-ovate, cor- 

 date at the base, acuminate at the 

 apex, coarsely crenate-dentate, 2'- 

 4' long, i / -2 / wide; petioles shorter 

 than the leaves; inflorescence cy- 

 mose-paniculate; heads short-ped- 

 uncled, 6 // ~7 // long; peduncles pu- 

 bescent; involucre campanulate,3o- 

 45-flowered, the outer bracts ovate, 

 pubescent, usually abruptly acumi- 

 nate or subulate-tipped, the inner 

 linear, glabrous, striate, obtuse or 

 acute; bristles of the pappus sca- 

 brous. 



Montana to southern Missouri and 

 New Mexico, west to Oregon and 

 Arizona. Aug. -Sept. 



7. KUHNIA L> Sp. PI. Ed. 2, 1662. 1763. 

 Perennial herbs, with alternate punctate resinous-dotted leaves, and discoid heads of 

 white or purplish flowers in terminal cymose corymbs. Involucre turbinatecampanulate, 

 its bracts striate, imbricated in several series, the outer shorter. Corolla regular, the tube 

 slender, the limb 5-lobed. Anthers obtuse and entire at the base, nearly or quite separate. 

 Style-branches slender, obtusish. Achenes io-striate. Pappus a single row of numerous 

 very plumose bristles. [Named for Dr. Adam Kuhn, of Philadelphia, a pupil of Linnaeus.] 



About 8 species, native of North America and Mexico. 

 Puberulent; leaves sparingly dentate, or entire; heads loosery clustered, 4"~5" high. 



1. K. eupatorioides. 

 Pubescent or tomentulose; leaves sharply serrate; heads densely clustered, 6" -8" high. 



2. K. zlutinosa. 



i. Kuhnia eupatorioides L. 

 False Boneset. (Fig. 3634.) 



Kuhnia eupatorioides L- Sp. PI. Ed. 2, 1662. 



1763- 

 Eupatorium alternifolium Ard. Spec. Bot. 2: 

 40. pi. 20. 1764. 



Erect, puberulent and resinous, i-3 

 high, branched above. Leaves lanceolate or 

 linear-lanceolate, acute or obtusish at the 

 apex, narrowed at the base, sparingly den- 

 tate, or entire, the upper sessile, the lower 

 usually short-petioled; heads several or nu- 

 merous, peduncled, 4 // -5 // high, loosely 

 clustered; outer bracts of the involucre lan- 

 ceolate or ovate-lanceolate, acuminate, the 

 inner much longer, linear, cuspidate; pap- 

 pus tawny, or sometimes nearly white. 



In dry soil, New Jersey to Georgia, Ohio, 

 West Virginia and Texas. Ascends to 3300 ft. 

 in West Virginia. Aug. -Sept. 



