Rudbeckia mollis

Elliott

Sketch Bot. S. Carolina 2: 453. 1823.

Common names: Softhair coneflower
Endemic
Treatment appears in FNA Volume 21. Treatment on page 58. Mentioned on page 53.

Annuals, biennials, or perennials, to 100 cm (taprooted). Stems softly pilose to woolly (hairs spreading, 1–4 mm, longer ones toward bases). Leaves: blades oblong to oblong-lanceolate (not lobed), margins entire or serrate, apices acute to obtuse, faces softly pilose to woolly, glanddotted; basal petiolate, 5–12 × 0.5–2 cm, bases attenuate; cauline sessile, (elliptic to pandurate) 1.5–10 × 1–4 cm (mid largest, bases cuneate to auriculate). Heads borne singly or (2–12) in loose, corymbiform arrays. Phyllaries to 1.5 cm (faces hairy and glanddotted). Receptacles conic to hemispheric; paleae 5–6.5 mm, apices acute, abaxial tips hirsute and glanddotted. Ray-florets 10–16; laminae linear to oblanceolate, 20–40 × 4–7 mm, abaxially hairy and glanddotted. Discs 10–20 × 12–18 mm. Disc-florets 200–400+; corolla bases yellowish green, otherwise brown-purple, 3–4.2 mm; style-branches ca. 1.5 mm, apices acute to obtuse. Cypselae 2.5–3.5 mm; pappi 0 or coroniform, to 0.1 mm. 2n = 38.


Phenology: Flowering late spring–summer.
Habitat: Dry, sandy soils
Elevation: 30–90 m

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Rudbeckia mollis"
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 +
Elliott +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
attenuate +
compound +  and simple +
oblong;oblong-lanceolate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
1.5 cm15 mm <br />0.015 m <br /> (10 cm100 mm <br />0.1 m <br />) +
1cm +  and 4cm +
Softhair coneflower +
yellowish green +
0.3 cm3 mm <br />0.003 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
proximally yellow +  and yellowish green +
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 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
12mm;18mm +
Ala. +, Fla. +, Ga. +  and S.C. +
30–90 m +
softly pilose +  and woolly +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry, sandy soils +
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 +
20mm;40mm +
linear +  and oblanceolate +
sessile +  and petiolate +
not glaucous +
greenish;yellowish +
deltate +  and lance-linear +
serrate +  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 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
Flowering late spring–summer. +
3 +  and 21 +
0 cm0 mm <br />0 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Sketch Bot. S. Carolina +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
conic;hemispheric +
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 mollis +
Rudbeckia sect. Rudbeckia +
species +
cylindric +
entire +  and toothed +
100 cm1,000 mm <br />1 m <br /> (200 cm2,000 mm <br />2 m <br />) +
perennial +, biennial +  and annual +
0 cm0 mm <br />0 m <br /> (100 cm1,000 mm <br />1 m <br />) +
shrub +  and subshrub +