Silphium integrifolium var. integrifolium

Endemic
Synonyms: Silphium integrifolium var. deamii Settle & Fisher Silphium integrifolium var. neglectum
Treatment appears in FNA Volume 21. Treatment on page 80.

Plants 40–200 cm. Leaves: blades scabrous, pilose, hispid, or glabrous. Phyllaries: abaxial faces usually hispid, pilose, or scabrous, rarely glabrous. Ray-florets 12–22. Disc-florets 70–140.2n = 14.


Phenology: Flowering mid summer–early fall.
Habitat: Prairies, along roads and railroads
Elevation: 50–600 m

Distribution

V21-180-distribution-map.gif

Ala., Ark., Ill., Ind., Iowa, Kans., Ky., La., Mich., Miss., Mo., Nebr., Okla., S.Dak., Tenn., Wis.

Discussion

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

glabrous +, scabrous +, pilose +  and hispid +
not tailed +, rounded +  and obtuse +
connate +  and distinct +
acute;acuminate +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
racemiform +  and paniculiform +
indeterminate +  and determinate +
Jennifer A. Clevinger +
Michaux +
bristlelike +
coroniform +
round +  and caudate +
compound +  and simple +
2 cm20 mm <br />0.02 m <br /> (23 cm230 mm <br />0.23 m <br />) +
glabrous +, hispid +, pilose +  and scabrous +
lanceolate;ovate +
0.1 cm1 mm <br />0.001 m <br /> (11 cm110 mm <br />0.11 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
0.9 cm9 mm <br />0.009 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
hairy +  and glabrous +
less orbiculate +  and obovate or cuneate +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
fertile +  and bisexual +
fertile +  and bisexual +
Ala. +, Ark. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Mich. +, Miss. +, Mo. +, Nebr. +, Okla. +, S.Dak. +, Tenn. +  and Wis. +
50–600 m +
glabrous +, scabrous +  and hispid +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Prairies, along roads and railroads +
in cymiform , corymbiform , paniculiform , racemiform or spiciform , arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
campanulate;hemispheric +
sessile +  and petiolate +
alternate +, subopposite +, opposite +  and whorled +
cauline +  and basal +
deltate +
entire +  and serrate +
toothed +  and entire +
2-carpellate +
persistent +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Flowering mid summer–early fall. +
17 +  and 37 +
unequal +  and subequal +
Fl. Bor.-Amer. +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
exalbuminous +
glabrous +  and scabrous +
terete +  and slightly square +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Silphium integrifolium var. deamii +  and Silphium integrifolium var. neglectum +
Silphium integrifolium var. integrifolium +
Silphium integrifolium +
variety +
cylindric +
cylindric +
shorter to longer than campanulate +
toothed +  and entire +
20 cm200 mm <br />0.2 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +
fibrous-rooted +  and caulescent +
200 cm2,000 mm <br />2 m <br /> (400 cm4,000 mm <br />4 m <br />) +