45* 



COMPOSITAE. 



VOL. 111. 



48. POLYMNIA L. Sp. PI. 926. 1753. 



Perennial herbs (some tropical species woody), with opposite membranous lobed or 

 angled leaves, or the lower alternate, and mostly large corymbose-paniculate heads of both 

 tubular and radiate yellow or whitish flowers, or rays sometimes wanting. Involucre hemi- 

 spheric or broader, of about 5 large outer bracts, and more numerous smaller inner ones. 

 Receptacle chaffy. Ray-flowers pistillate, fertile, subtended by the inner involucral bracts, 

 the ligules elongated, minute, or none. Disk-flowers subtended by the chaffy scales of, the 

 receptacle, perfect, sterile, their corollas tubular, s-toothed. Anthers 2-toothed at the base. 

 Pappus none. Achenes thick, short, turgid, glabrous. [From the Muse Polhymnia.] 



About jo species, natives of America. Only the following are known in North America. Type 

 species : Polymnia canadensis L. 



Rays commonly 6" long or more, yellow; achenes strongly striate. i. P. Uvedalia. 



Rays commonly minute or up to 6" long, whitish, or none ; achenes 3-ribbed. 2. P. canadensis. 



i. Polymnia Uvedalia L. 



flowered Leaf -cup. 



Yellow or Large- 

 Fig. 4417. 



Polymnia Uvedalia L. Sp. PI. Ed. 2, 1303. 1763. 



Rough-pubescent, stout, branched, 3-io high. 

 Leaves broadly ovate or deltoid, 3-nerved, abruptlj 

 contracted above the base, minutely ciliate, more 

 or less pubescent on both s'des, angulate-lobed, the 

 lower often i long and broad, petioled, the upper 

 sessile, somewhat clasping; heads few in terminal 

 clusters, peduncled, ii -3' broad; rays 10-15, com- 

 monly 6"-i2" long, linear-oblong, bright yellow, 

 3-toothed or entire; exterior bracts of the cup-like 

 involucre ovate-oblong, obtuse, ciliate, 4"-io" long; 

 achenes slightly oblique f and laterally compressed, 

 strongly striate, nearly 3" long. 



In rich woods, New York to Indiana, Florida, Mis- 

 souri, Oklahoma and Texas. Bermuda. Yellow bears- 

 foot. July-Aug. 



2. Polymnia canadensis L. Small-flowered 

 Leaf-cup. Fig. 4418. 



Polymnia canadensis L. Sp. PI. 926. i753- 

 Polymnia canadensis radiata A. Gray, Syn. Fl. N. A. 



i: Part 2, 238. 1884. 

 P. radiata Small, Fl. S.E. U. S. 1239. 1903. 



Rather slender, viscid-pubescent, at least above, 

 simple or branched, 2-5 high. Leaves deltoid- 

 ovate to hastate, usually very thin, all petioled, 

 deeply angulate-lobed and the lobes dentate, or 

 the lower lyrate-pinnatifid, 4'-io' long, the upper- 

 most sometimes ovate and entire or merely den- 

 ticulate; heads few in terminal clusters, short- 

 peduncled or sessile, 4"-6" broad ; outer bracts of 

 the involucre ovate to lanceolate, obtuse or acut- 

 ish, 2"-3" long; rays small, minute or none, or 

 sometimes up to 6" long and 3-lobed, whitish or 

 yellowish ; achenes 3-angled, obovoid, obcom- 

 pressed, 3-ribbed, not striate. 



In damp, rich shaded places, Vermont and Ontario 

 to Minnesota, Pennsylvania, North Carolina, Tennessee and Arkansas. Jui 



49. MELAMPODIUM L. Sp. PI. 921. 1753- 



Herbs some species woody, with opposite entire or dentate leaves, and terminal peduncled 

 heads of both tubular and radiate, white or yellow flowers in our species. Involucre \ 

 spheric, its bracts in 2 series, the 4 or 5 outer ones broad, often connate at the base the mne 

 hooded, embracing or permanently surrounding the pistillate fertile ray-flowers. Receptacle 

 convex or conic, chaffy. Ray-flowers in I series, the rays spreading, 2- 3 -lobed or entir 

 Disk-flowers perfect, sterile, their corollas with a narrowly campanulate S-toothed limb, tl 

 anthers entire at the base, the style undivided. Achenes obovoid, more or less incurved 

 Pappus none. [Greek, black-foot, of doubtful significance, but the stem bases of 

 species are dark-colored.] 



