88 Trans. Acad. Sci. of St. Louis. 



" var. fol. elongatis viridibus "), an unusual branched form. — Wisconsin: 

 St. Croix, Hale, 1861 (marked "var. of nemoralis^^). — Tbxas: Spring 

 Creek, Gillespie County, Q. Jermy. — Michigan: Manitou Island, 

 Lake Michigan, B. B. Brown, Sept., 1892. — Indian Territory: 

 Sapulpa, B. F. Bush, 247, Sept. 25, 1894. — Iowa : Clinton, Lyon 

 County, Pammel, H, Sept. i, 1896; Emmet County, Cratty and 

 Pammel, 618, Aug. 28, 1897 (young plants) ; Ames, Pammel, 43, Aug. 24, 

 1896. — Kansas: Manhattan, Norton, Aug. 7, 1892. 



SeNECIO PSEUDO-TOMENTOSU8, D. Sp. 



Perennial, 3-4.5 dm. high, densely and persistently wooUy- 

 canescent, tufted; basal leaves semi-orbicular to ovate or 

 ovate-oblong, 24-36 mm. long, 7-24 mm. wide, narrowed, 

 truncate, or semi-cordate at base, obtusse, sharply and often 

 doubly serrate, varying to crenate-serrate, more or less per- 

 sistently woolly even above ; petioles often 5 cm. long, strongly 

 and persistently woolly; stem leaves rather distant, short- 

 petioled or sessile, few; the lower oblong in outline, 5-7 cm. 

 long, strongly laciniate-pinnatifid, the terminal segment much 

 the larger, 24-36 mm. long, 24 mm. wide ; upper stem leaves 

 lanceolate in outline; corymb 5-25-flowered ; involucre 6-8 

 mm. high, 8-10 mm. broad, strongly tomentose, its linear- 

 lanceolate segments acute, in a single row, with 1-3 lanceolate 

 aristate-pointed bracts 2 mm. long at base ; rays about 10, 

 4-6 mm. long; achenes hispidulous; pappus white. — Plate 

 XVII. 



Type locality: Monteer, Shannon County, Missouri; col- 

 lected by B. F. Bush, No. 453, May 13, 1901; type in 

 Herb. Missouri Botanical Garden, duplicate in Herb. K. K. 

 Mackenzie. 



This species is common in the rocky barrens in the Ozark 

 Mountain region in Southern Missouri, which in spring are 

 very wet and completely covered with herbaceous plants. 

 The type specimens were collected in a rocky barren in Shan- 

 non County, associated with such plants as Senecio Plattensis, 

 Agave Virginica^ Berlandiera Texana, Scutellaria Bushii, 

 Delphinium Nbrtonianum, and Parthenium repens. 



This species belongs to the aureus group. Its persistently 

 woolly tomentum distinguishes it from most of the Eastern 

 United States species of the group ; from 8. tomentosus Michx., 

 and S. Plattensis Nutt., with which it might be confounded. 



