GENUS 61. THISTLE FAMILY. 47! 
4. Rudbeckia Brittonii Small. Britton’s 
Cone-flower. Fig. 4445. 
R. Brittonit Small, Mem. Torr. Club 4: 130. 1894. 
Stem stout, hispid, erect, 14°-23° high, simple, 
grooved, leafy, at least below. Leaves serrate 
or crenate-serrate, strigose-pubescent, the basal 
ones ovate to ovate-lanceolate, 3-4’ long, obtuse, 
long-petioled; stem leaves obovate to oval, often 
with a lateral lobe, the petioles wing-margined ; 
uppermost leaves often ovate-lanceolate, sessile, 
cordate; bracts of the involucre foliaceous, often 
1’ long or more; head 2’-3’ broad; rays about 12, 
2-lobed; outer chaff: oblanceolate, the inner linear, 
acute, purple-tipped, fringed with jointed hairs; 
style-tips slender, acute. 
In woods, Pennsylvania to Virginia and Tennessee. 
May-July. 
5. Rudbeckia filgida Ait. Orange or Bril- 
liant Cone-flower. Fig. 4446. 
Rudbeckia fulgida Ait. Hort. Kew. 3: 251. 1789. 
R. spathulata Michx. Fl. Bor. Am. 2: 144. 1803. 
Rudbeckia missouriensis Engelm.; Boynton & Beadle, 
Biltmore Bot. Studies 1: 17. 1901. 
R. palustris Eggert; Boynton & Beadle, loc. cit. 16. 1901. 
Perennial; stem hirsute, or strigose-pubescent, 
slender, sparingly branched or simple, 1°-3° high. 
Leaves entire or sparingly serrate with distant teeth, 
more or less hirsute or pubescent on both sides, the 
basal and lower ones oblong or spatulate, obtuse, 
2’-4' long, 3-nerved, narrowed into margined petioles, 
the upper lanceolate, oblong-lanceolate, ovate or obo- 
vate, sessile, or slightly clasping at the base; heads 
few, 1’-13’ broad; bracts of the involucre oblong or 
lanceolate, 3-8” long; rays 8-15, linear, bright yel- 
low or with an orange base; disk globose or globose- 
ovoid, brown-purple, 5’-7” broad; chaff of the re- 
ceptacle linear-oblong, glabrous, or ciliate at the 
summit; pappus a minute crown. 
In dry soil, New Jersey and Pennsylvania to Florida, 
west to Missouri and Texas. Consists of races differing 
in pubescence and leaf-form. Aug.—Oct. 
6. Rudbeckia umbrésa Boynton & Beadle. 
Woodland Cone-flower. Fig. 4447. 
Rudbeckia umbrosa Boynton & Beadle, Biltmore Bot. , 
Studies 1: 16. 1901. { 
Pubescent, perennial; stems 13°-33° tall, striate, 
simple or branched. Leaves thin, the basal and 
lower cauline ones ovate, 2-42’ long, coarsely ser- 
rate, rounded, truncate or cordate at the base, acute 
at the apex, the upper stem leaves diminishing in 
size, short-petioled or subsessile, narrower and less 
toothed than the lower; heads mostly several, showy; 
rays 8-12, yellow or orange-yellow, 7-10” long; 
bracts of the involucre oblong to linear-oblong, 
5-73” long, pointed; disk somewhat depressed, 5°— 
7%” wide, dark purple; chaff broad, densely ciliate 
at the apex; pappus coroniform. 
In moist soil and woodlands, Kentucky, Tennessee and 
northwestern Georgia. Aug.—Sept. 
