COMPOSITAE (composite FAMILY) 485 



Leaves large (6-10 cm. or more long), usually in verticils of 3 . .I.E. maculatum. 

 Leaves small (2-5 cm, long), opposite. 



InvolWral bracts striate 2. E. Fendleri. 



Involucral bracts not striate 3, E. texense. 



1. Eupatorium maculatum L. Amoen. Acad. 4: 288. 1755. Stems 5-15 

 dm. feign, more or less spotted with purple: leaves in whorls of 3-5, ovate 

 to ovate-lanceolate, 5-15 cm. long, more or less pubescent and of ten scabrous, 

 rather coarsely toothed: corymbs flat-topped or ovate: involucres 7-8 mm. 

 high, the outer bracts obtuse, pubescent: corollas white, pink, qr purple. {E. 

 Bruneri Gray, Syn. Fl. 1: 96. 1886; E. Rydbergii Brit.; E. atromontanum, A. 

 Nels. Bot. Gaz. 31: 400. 1901.) Known as Joe Pye Weed.— From New Mex- 

 ico, through our eastern border and thence both eastward and westward. 



2. Eupatorium Fendleri Gray, Proc. Am. Acad. 17: 205. 1882. Stem 3-6 

 dm. high, leafy, obscurely puberulent : leaves dentate, opposite or the upper al- 

 ternate, deltoid-subcordate, tapering gradually ,to an acute or acuminate 

 point: heads comparatively small and numerous, paniculate, all ped uncled; 

 bracts of the involucre all obtuse, the outer oblong: flowers white: achenes 

 minutely pubescent. [E. arizonicum Greene, Pitt. 4: 280. 1901 (?),] — New 

 Mexico and possibly in Colorado and Utah. 



3. Eupatorium texense (T. & G.) Rydb. Fl. Col. 335. 1906. Herbaceous, or 

 nearly so, 5-10 dm. high; branches slender, spreading: leaves more or ,less 

 cinereous-pubenilent, deltoid-ovate, obtuse or acute, more or less dentate, 

 slender-petioled: heads 8-10 mm. high,,aboiit 12-flowered; involucral bracts 

 nearly or quite nerveless, almost linear. E. ageratifolium. — Infrequent; 

 Colorado ajid southward. , 



3. KTJHNIA L. False Boneset 



Perennial caulescent herbs with puberulent or pubescent foliage. Leaves 

 alternate; blades resinous-dotted. Heads discoid, in open or crowded clus- 

 ters; involucres narrow, s^veral-many-flowered; bracts narrow, in few series, 

 striate, the inner successively longer. Receptacle naked. CoroUas white or 

 purplish. Anthers obtuse and entire at the base. Stigmas slender, rather 

 obtuse. Achenes 10-20-striate, columnar. Pappus of one series of very 

 plumose hair-like bristles. 



Achenes 10-striate, shorter than the pappus. 



Flowers 20-30; stems branched from the base up .... 1. K. Hitchcbckii. 



Flowers 15-20; stems simple below 2. K. glutinosa. 



Achenes 20-striate, nearly or quite as long as the pappus. 



Leaves narrowly lanceolate to linear; stems erect or spreading, usu- 

 ally freely branched above 3. K. Gooddingii. 



Leaves ovate to lanceolate; stems assurgent, nearly simple . . 4. K. reticulata. 



1. Kuhnia Hitchcockli A. Nels. Bot. Gaz. 31: 403. 1901. Tufted- 

 suffrutescent, the lignescent stems decumbent-spreading, each divaricately 

 branched from the base up, dark, minutely puberulent as are also the leaves: 

 stem leaves nearly linear, with a few sharp teeth, 3-4 cm. long; those of the 

 rigid branches numerous, small, Mnear, 2-3 cm. long: involucre usually sub- 

 tended by a feW' linear bractletsy the bracts in about 5 series, the short outer 

 ones broadly lanceolate, the inner broadly Unear ,with thin, scarious margins 

 and cuspidate apex: flowers 20-30, the tube nearly imiform: achenes small, 

 about lO^striate, shorter than the dull white to tawny, distinctly plumose 

 pappus. — On the dry plains east of the mountains. 



2. Kuhnia glutinosa Ell. Bot. S. C. & Ga. 2: 292. 1824. Rather densely 

 rough pubescent; stems 5-12 dm. tall, branching above: leaf-blades lanceo- 

 late to linear-lanceolate below, 1-4 cm. long, acute or acmninate, shallowly 

 serrate, sessile by the broad bases or partly clasping: involucres 8-10 mm. 

 high; bracts subulate without, lanceolate to linear within and cuspidate- 

 acuminate: achenes 5 mm. long; pappus tawny or brownish. K. eupatorioides 

 corymbosa. — ^From South Dakota to Alabama and Texas and in the eastern 

 part of our range. i 



3. Kuhnia Gooddingii A. Nels. 1. C. 402. In dense clumps from a tufted 



