COMPOSITAE (COMPOSITE FAMILY) 781 



rather dense cyme ; involucre campanulate ; its bracts regularly imbricated and 

 closely oppressed, chiefly rounded or obtuse, usually purple- or violet-tin in <! ; 

 flowers red-purple; pappus purple. Rich dry prairies, s. Ont. and O. to 111. 

 and la. 



7. V. missurica Raf. Similar in habit to the preceding; heads 35-60- 

 flowered ; involucre ovoid- or subcylindric-campanulate, mostly greenish ; the 

 bracts rather narrow, very numerous, closely appressed, the middle and lower 

 ones acutish ; pappus tawny or with only a slight purple tinge. ( V. altissima, 

 var. grandiflora Gray.) Prairies,, Ill.(?) and Mo. to Tex. and Kan. An 

 obscure species. 



8. V. Baldwin! Torr. Tomentulose; heads small or medium-sized, about 

 30-flowered ; leaves lance-oblong or -ovate ; involucre hoary -tomentose and 

 arachnoid, mostly greenish; the bracts squarrose, acuminate. Prairies and 

 barren hills, la. to Kan. and Tex. V. interior Small, though sometimes distin- 

 guishable by its less squarrose mostly purple-tinged involucral bracts, does not 

 appear satisfactorily separable. 



2. ELEPHANTOPUS [Vaill.] L. ELEPHANT'S-FOOT 



Heads discoid, 2-5-flowered, several together clustered into a compound 

 pedunculate head ; flowers perfect. Involucre narrow, flattened, of 8 oblong 

 dry bracts. Achenes 10-ribbed ; pappus of stout bristles, chaffy-dilated at the 

 base. Perennials, with alternate leaves and purplish flowers. (Name com- 

 posed of A^>as, elephant, and TTOI/S, foot.) 



* Stem leafy ; upper leaves very like the basal. 



1. E. carolinianus Willd. Somewhat hairy, corymbose, leafy ; leaves ovate- 

 oblong, thin. Dry soil, N. J. and Pa. to 111., Kan., and south w. (Mex., W. I.) 



* * Stem scape-like, with a few bract-like leaves or naked. 



2. E. toment6sus L. Somewhat hairy ; basal leaves obovate to narrowly 

 spatulate, silky and prominently veined beneath ; heads large ; pappus-scalds 

 attenuate. Va. to Ky., Ark., and southw. 



3. E. nudatus Gray. Strigose-puberulent ; basal leaves thin, green, spatu- 

 late-obovate or oblanceolate, not prominently veined beneath ; beads smaller ; 

 pappus-scales broadly deltoid. Del. to Ark., and southw. 



3. SCLER6LEPIS Cass. 



Head discoid, many-flowered ; flowers perfect. Involucral bracts linear, 

 equal, in 1 or 2 rows. Receptacle naked. Corolla 6-toothed. Achenes 6-angled ; 

 pappus a single row of 6 almost horny oval and obtuse scales. Smooth peren- 

 nial, with simple stems, rooting at the base, linear entire leaves in whorls of 

 4-6, and a terminal head of flesh-colored flowers in summer. (Name composed 

 of <rK\i}p6s, hard, and Xeirk, a scale, from the pappus.) 



1. S. uniflbra (Walt.) BSP. (S. verticillata Cass.) In water or sandy 

 bogs, Bradford, N. H. (F. T. Lewis} ; pine barrens, from N. J. southw. 



4. EUPAT6RIUM [Tourn.] L. THOROUGHWORT 



Heads discoid, 3-many-flowered ; flowers perfect. Involucre cylindrical or 

 bell-shaped, of more than 4 bracts. Receptacle flat or conical, naked. Corolla 

 5-toothed. Achenes 5-angled ; pappus a single row of slender capillary barely 

 roughish bristles. Erect perennial herbs, often sprinkled with bitter resinous 

 dots, with generally corymbose heads of white, bluish, or purple blossoms, ap- 

 pearing near the close of summer. (Dedicated to Eupator Mithridates, who U 

 said to have ued a species of the genus in medicine.) 



