Rudbeckia missouriensis

Engelmann ex C. L. Boynton & Beadle

Biltmore Bot. Stud. 1: 17. 1901.

Common names: Missouri or Missouri orange coneflower
IllustratedEndemic
Synonyms: Rudbeckia fulgida var. missouriensis (Engelmann ex C. L. Boynton & Beadle) Cronquist
Treatment appears in FNA Volume 21. Treatment on page 58. Mentioned on page 53.

Perennials, to 80 cm (not rhizomatous, not stoloniferous, rosettes at bases of aerial stems). Stems (branches ascending) moderately hirsute (hairs spreading, 1+ mm). Leaves: blades linear to spatulate (not lobed), bases attenuate to cuneate, margins entire or remotely serrulate, apices acute to rounded, faces hirsute; basal petiolate, 5–20 × 0.5–2 cm; cauline petiolate (proximal) or sessile (distal), 2–15 × 0.4–1.5 cm. Heads borne singly or (2–12) in loose, corymbiform arrays. Phyllaries to 1.5 cm (faces hairy, more densely abaxially). Receptacles mostly hemispheric; paleae 5–6.5 mm, apices rounded to acute, abaxial tips glabrous. Ray-florets 9–15; laminae elliptic to oblanceolate, 10–25 × 5–8 mm, abaxially sparsely strigose. Discs 8–15 × 10–17 mm. Disc-florets 150–250+; corollas proximally greenish yellow, distally purple-brown, 4–5.5 mm; style-branches ca. 1.5 mm, apices obtuse. Cypselae 1.5–2.7 mm; pappi coroniform, ca. 0.1 mm. 2n = 38.


Phenology: Flowering late spring–fall.
Habitat: Dry, rocky prairies, limestone glades
Elevation: 10–80 m

Distribution

V21-127-distribution-map.gif

Ark., Ill., Ky., La., Mo., Okla., Tex.

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Rudbeckia missouriensis"
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 +
Engelmann ex C. L. Boynton & Beadle +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
attenuate +  and cuneate +
compound +  and simple +
linear;spatulate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
sessile +  and petiolate +
2 cm20 mm <br />0.02 m <br /> (15 cm150 mm <br />0.15 m <br />) +
0.4cm +  and 1.5cm +
Missouri or Missouri orange coneflower +
purple-brown +  and greenish yellow +
0.4 cm4 mm <br />0.004 m <br /> (0.55 cm5.5 mm <br />0.0055 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 +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
10mm;17mm +
Ark. +, Ill. +, Ky. +, La. +, Mo. +, Okla. +  and Tex. +
10–80 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry, rocky prairies, limestone glades +
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 +
10mm;25mm +
elliptic +  and oblanceolate +
sessile +  and petiolate +
not glaucous +
greenish;yellowish +
deltate +  and lance-linear +
serrulate +  and entire +
2-carpellate +
0.5 cm5 mm <br />0.005 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
persistent +
0 +  and 2 +
coroniform +
0.1 cm1 mm <br />0.001 m <br /> (?) +
Flowering late spring–fall. +
3 +  and 21 +
0 cm0 mm <br />0 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Biltmore Bot. Stud. +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
hemispheric +
connate +  and distinct +
2 +  and 5 +
exalbuminous +
Illustrated +  and Endemic +
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 />) +
Rudbeckia fulgida var. missouriensis +
Rudbeckia missouriensis +
Rudbeckia sect. Rudbeckia +
species +
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 /> (80 cm800 mm <br />0.8 m <br />) +
shrub +  and subshrub +