244 KEY .AND FLORA 
2. A. plantaginifolia Richards. Common EvEerRLASTING, 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. Cons Firower, Biacr-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 Cons Fiower. Stem slender, branch- 
ing, often 4 ft. or more high, gray with minute close-lying hairs. 
Leaves mostly large, pinnately 3-7-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. 
