[Vor. 3 
130 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
Illinois: in wet meadows near Beach, Lake Co., 16 June, 
1907, Greenman 2022 (Field Mus. Herb., photograph in Mo. 
Bot. Gard Herb.), in part; low ground, Evanston, Earl, also 
Price (U. S. Nat. Herb.). 
Missouri: on prairies, Levasy, Jackson Co., 18 May, 1902, 
Bush 1678 (Gray Herb. and Mo. Bot. Gard. Herb.), түрЕ; 
swales on prairies, Levasy, 11 May, 1904, Bush 1940 (Mo. Bot. 
Gard. Herb.). 
Although some of the specimens cited show indieations of a 
possible origin by hybridization, as was indicated in ‘Rhodora’ 
in 1908, yet the examination of additional material points 
rather towards an origin by variation. 
54. 8. Robbinsii Oakes ex Rusby, in Bull. Torr. Bot. Club 
20:19, pl. 139. 1893; Heller, Cat. N. Am. РІ, 147. 1898, and ed. 
2, 230. 1900; Britton & Brown, Ill. КІ. 3:480, fig. 4046. 1898, and 
ed. 2, 544, fig. 4624. 1913; Greenm. in Rhodora 3:4. 1901; 
Monogr. Senecio, I. Teil, 24. 1901, and in Engl. Bot. Jahrb. 
32:20. 1902; Small, Fl. Southeastern U. S. 1303. 1903, and ed. 
2, 1913; Kennedy in Rhodora 6:133. 1904; Britton, Manual 
1028. 1901, and ed. 2, 1905; Greenm. in Gray, Manual, ed. 7, 
854. 1908. 
S. aureus var. lanceolatus Oakes ex Torr. & Gray, Fl. N. 
Am. 2:442. 1843; Macoun, Cat. Canadian Pl. 265. 1884. 
S. aureus var. Balsamitae Gray, Syn. Fl. N. Am. 1:391. 
1884, and ed. 2, 1886, in part, as to S. aureus var. lanceolatus 
Oakes in synonymy. 
An herbaceous perennial, glabrous or slightly tomentose 
along the margins of the petioles of the leaves, especially near 
their sheathing base; lower leaves long-petiolate, ovate-rotund 
to oblong-lanceolate, 1 to 10 em. long, 1 to 3 em. broad, erenate 
to sharply and more or less serrate-dentate, cordate to ab- 
ruptly narrowed at the base, green and glabrous on both sur- 
faces; upper stem-leaves petiolate and sublyrate or sessile and 
more or less ріппайвесі; inflorescence a terminal several to 
many-headed corymbose есуше; heads 8 to 10 mm. high, radi- 
ate; involucre campanulate, ealyeulate; bracts of the in- 
voluere about 21, linear, acute, glabrous; ray-flowers 10 to 12, 
rays yellow; disk-flowers numerous; achenes glabrous. 
