244 KEY AND FLORA 
2. A. plantaginifolia Richards. Common Everiastine, Pussy’s 
Tors. Stolons ascending, leafy throughout; stems slender, 4-20 in. 
high. Basal leaves and those at the tips of the stolons pale and very 
downy or covered with cobweb-like hairs above; stem leaves scat- 
tered, lanceolate, taper-pointed. Heads more or less closely corymbed. 
Styles crimson. In dry soil, very common. 
3. A. solitaria Rydb. Stolons when well developed procumbent, 
leafy only at the tip; stems 2-8 in. high. Basal leaves obovate- 
spatulate, densely downy beneath, covered with cobweb-like hairs 
above, but becoming smoothish; stem leaves few, small, lying close 
to the stem. Heads solitary. Styles crimson. Rich wooded hillsides, 
central and south central states. 
IV. RUDBECKIA L. 
Perennial or biennial. Leaves alternate, entire or lobed. 
Heads radiate, long-peduncled, many-flowered; bracts imbri- 
cated in 2-3 series, spreading; receptacle convex or long-con- 
ical, with concave, chaffy scales. Ray flowers yellow, neutral; 
disk flowers purple to brown, bisexual. Akenes smooth, 4- 
angled, truncate. Pappus a few short teeth or wanting.* 
1. R. hirta L. Cone Firower, Biracx-Eyep Susan. Annual or 
biennial; stem erect, rough-hairy, simple or branched, 2-3 ft. high. 
Leaves lanceolate to oblong, thick, obscurely serrate, rough-hairy, 
3-ribbed; the lower petioled, the upper sessile. Heads few, long- 
peduncled ; bracts rough-hairy, spreading. Ray flowers 10-20, orange- 
yellow; disk flowers purplish-brown. Chaff acute, hairy at the apex. 
Pappus none. On dry, open ground. 
V. LEPACHYS Raf. (RATIBIDA) 
Perennial herbs. Leaves alternate, pinnately divided. Heads 
radiate, long-peduncled, many-flowered; bracts few, small, 
spreading. Receptacle columnar or slender, the chaff of con- 
cave truncate scales. Ray flowers yellow or with brown at 
the base, neutral; disk usually grayish. 
1. L. pinnata T.& G. Gray Cone Frower. Stem slender, branch- 
ing, often 4 ft. or more high, gray with minute close-lying hairs. 
Leaves mostly large, pinnately 38—7-divided ; the basal ones with long 
petioles, stem leaves sessile, the uppermost small. Disk oblong, gray 
or at length brown. Rays 4-10, light yellow, drooping, often 2 in. 
long. In dry prairie soil and borders of thickets, 
