Rudbeckia. COMPOSITiE. 2G1 



length of the 12 to 14 fully inch-long rays: disk over half-inch in diameter. — Ait. Kew. 

 iii. 251 ; Bot. Mag. t. 1996; Bart. Fl. Am. Sept. i. t. 54, & iii. t. 98 (both figures doubtful) ; 

 Torr. & Gray, 1. c, partly. R. chrysomela, Michx. Fl. ii. 14-3. />'. discolur, I'ursh, Fl. ii. 574, 

 DC. 1. c, hardly of Flliott. — Dry soil, I'eunsylvauia ? and Virginia to Louisiaua and Texas, 

 west to Missouri; flowering ratlier late. 



R. spathulata, Michx. Strigulose: stem slender, 8 inches to .3 feet high : leaves obovate 

 or spatulate, or tlie uppermost lanceolate, denticulate or sparingly serrate, their pubescence 

 wholly appressed and short ; radical and lowest cauline leaves mostly roundish at summit, at 

 base abruptly contracted iuto a winged petiole, or even subcordate : peduncle usually elon- 

 gated : involucre commonly shorter and rays fewer and broader than in the preceding, and 

 uisk smaller. — Fl. ii. 144; Nutt. Gen. ii. 178. R. Hcllopsidis, A. H. Curtiss, coll. no. 1427, 

 not Torr. & Gray. R. fulgida, Torr. & Gray, 1. c, var. y, & fi in part. — Pine woods, Vir- 

 ginia to Tennessee and Florida. 



R. speciosa, Wenderoth. Sparsely strigulose or hispid, or glabrate : stem 1 to 3 feet 

 high, usually with spreading branches terminating in long naked peduncles : leaves ovate- 

 lanceolate or the upper elongated-lanceolate, bright green, irregularly serrate or some 

 laciuiately dentate, acute or acuminate ; radical and lower cauline oblong or ovate, 3-5- 

 uerved, abruptly contracted into long margined petioles: rays 12 to 20, elongated, at length 

 inch aud a half long : disk two-thirds to tliree-fourths inch high at maturity, the tips of the 

 purple chaffy bracts sparingly or obscurely ciliate : akeues larger and longer than in tlie 

 related species (line and a half long), more curved. — Ind. Sem. Hort. Marb. 1828, & in 

 Flora, 1829, i. Suppl. 30; Schrad. in DC. 1. c; Torr. & Gray, 1. c; Gard. Chron. 1881, 



■ ii. 372, fig. 72. Probably R. aspera, Pers. Syn. ii. 477. R. fuhjkla, Meehan, Nat. Flowers, 

 ser. 2, i. t. 14. — Moist ground, Peun. to Michigan, Arkansas, aud upper part of Alabama. 

 Long cultivated in gardens as R.fidg'da, &c. 



h. Chaff}' bracts of the receptacle with the obtuse tips canescently pubentlont or pubescent, and the 

 flowers duller purple ; the disk therefore browner. 



1. Cauline leaves all closely sessile or partly clasping, not nervose: bristly style-tips little thick- 

 ened : akenes small : pappus very short or obsolete. 



R. mollis Er.L. Cinereous, the leaves with fine and close pubescence, tlie (2 or 3 feet high 

 and usually branching) stem with hirsute or villous hairs, leafy : leaves spatulate-oblong, 

 obtuse, obscurely serrate, somewhat tripliiierved (1 to 3 inches long): rays 12 to 20, at 

 length inch and a half long and disk fully half-inch high. — Sk. ii. 453; Torr. & Gray, 1. c. 

 R. spathulata, Pur-sh, Fl. ii. 574. — Dry soil, Georgia aud Florida. 



2. Cauline leaves mostly petioled ; heads small: quadrangular akeues only a Hue long: pappus an 

 obscure crown or hardlj' any. 



R. Heliopsidis, Torr. & Gray. Almost glabrous, 2 feet high, rather slender, branched 

 above : leaves oblong-ovate, somewhat serrate, triplinerved and with a pair of nearly basal 

 nerves, abruptly contracted, the upper iuto short and wing-margined, the lower into long and 

 naked petioles : peduncles rather short and corymbose : involucre much shorter than the at 

 length globular disk (which is hardly half-inch high) : rays light yellow, 10 or 12, an inch or 

 less long. — Fl. ii. 310. — Pine woods, Columbus, Georgia, Boijkin. Cherokee Co. and Lee 

 Co., Alabama, Bucklei/, J. Donnell Smith. 



3. Cauline leaves mostly petioled and like the radical 3-5-nerved; the veinlets reticulated: heads 

 large and showy: the soon drooping light yellow rays 1 or 2 inches long, and the hemispherical 

 at length somewhat conical receptacle becoming three fourths of an inch liigli : involucre rather 

 .small: akenes somewhat compressed: pappus a conspicuous cup-shaped irregularly dentate or 

 crenate crown : stem 2 or 3 feet high, usually simple, and head long-peduneled. 



R. alismsefolia, Torr. & Gray. Glabrous or minutely scabrous : leaves oval, obtuse or 

 sometimes acute, obscurely repand-dentate or entire, 3 to 6 inches long, abruptly contracted 

 into the petiole: rays 10 to 15.— FL ii. 310. — Plains and open pine woods, S. Arkansas, 

 W. Louisiana, and adjacent Texas, Leavemt'orth, Hale, Drummond. 



R. grandiflora, C. C. Gmelin. llispidulous and scabrous throughout: leaves more rigid, 

 ovate to oval-lanceolate or uppermost lanceolate, commonly acute or acuminate at both ends, 

 sparingly serrate or denticulate, 4 to 9 inches long : rays 20 or more. — Hort. Bad. Carlsr. 

 1811 ; DC. 1. c. 556 (with some erroneous characters as to cliaff and pappus, taken from a 

 plant of R. hirta); Torr. & Gray, 1. c. Centrocarpha grandiflora, Don in Sweet. Brit. Fl. 



