Rudbeckia fulgida var. speciosa

(Wenderoth) Perdue

Rhodora 59: 297. 1958.

Common names: Showy coneflower
Endemic
Basionyms: Rudbeckia speciosa Wenderoth Index Sem. (Marburg). 1828
Treatment appears in FNA Volume 21. Treatment on page 55. Mentioned on page 54.

Stems glabrous or sparsely villous-hirsute (hairs spreading). Leaves: basal blades broadly lanceolate to ovate, 2–6.5 cm wide, lengths to 2 times widths, bases mostly rounded, margins entire or crenate, faces sparsely to moderately hairy; cauline petiolate (proximal) or ± sessile (distal), elliptic to lanceolate (becoming somewhat panduriform distally), not notably smaller distally, bases cuneate, attenuate, or auriculate, margins coarsely serrate to lacerate, faces scabrous to strigose. Phyllaries reflexed, 1–2.2 × 0.2–0.7 cm, glabrous or sparsely hairy. Receptacles 11–18 mm diam.; palea margins ciliate, faces glabrous. Ray-florets 12–21; laminae 20–40 mm. 2n = ca. 76.


Phenology: Flowering summer–fall.
Habitat: Mesic open woodlands
Elevation: 30–200 m

Distribution

V21-114-distribution-map.gif

Ont., Que., Ala., Ark., Conn., Del., Ga., Ill., Ky., Mass., Mich., Mo., N.J., N.Y., Ohio, Pa., Va., W.Va., Wis.

Discussion

Variety speciosa has rarely been introduced in Canada.

Selected References

None.

Lower Taxa

None.

not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Lowell E. Urbatsch +  and Patricia B. Cox +
(Wenderoth) Perdue +
broadly lanceolate +  and ovate +
2 cm20 mm <br />0.02 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
5 cm50 mm <br />0.05 m <br /> (30 cm300 mm <br />0.3 m <br />) +
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
auriculate +, attenuate +, cuneate +  and rounded +
Rudbeckia speciosa +
compound +  and simple +
lanceolate;broadly ovate or elliptic +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
sessile +  and petiolate +
2 cm20 mm <br />0.02 m <br /> (25 cm250 mm <br />0.25 m <br />) +
elliptic +  and lanceolate +
0.5cm +  and 7cm +
Showy coneflower +
yellowish green +
0.3 cm3 mm <br />0.003 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
hairy +  and glabrous +
flattened +, fusiform-terete +  and obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
1.2 cm12 mm <br />0.012 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
10mm;18mm +
Ont. +, Que. +, Ala. +, Ark. +, Conn. +, Del. +, Ga. +, Ill. +, Ky. +, Mass. +, Mich. +, Mo. +, N.J. +, N.Y. +, Ohio +, Pa. +, Va. +, W.Va. +  and Wis. +
30–200 m +
glabrous +, scabrous +  and strigose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Mesic open woodlands +
discoid +  and radiate +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.1 cm1 mm <br />0.001 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
fusiform;turbinate or broadly campanulate +
15mm;25mm +
elliptic +  and oblanceolate +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
sessile +  and petiolate +
not glaucous +
greenish;yellowish +
deltate +  and lance-linear +
serrate +  and entire +
coarsely serrate +  and lacerate +
2-carpellate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
persistent +
0 +  and 2 +
coroniform +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
Flowering summer–fall. +
1 cm10 mm <br />0.01 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
hairy +  and glabrous +
3 +  and 21 +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
hemispheric;ovoid +
connate +  and distinct +
2 +  and 5 +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Compositae +
Rudbeckia fulgida var. speciosa +
Rudbeckia fulgida +
variety +
cylindric +
entire +  and toothed +
100 cm1,000 mm <br />1 m <br /> (200 cm2,000 mm <br />2 m <br />) +
0 cm0 mm <br />0 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
shrub +  and subshrub +