Silphium terebinthinaceum var. pinnatifidum

(Elliott) A. Gray

Manual, 220. 1848.

Endemic
Basionym: Silphium pinnatifidum Elliott Sketch Bot. S. Carolina 2: 462. 1823
Treatment appears in FNA Volume 21. Treatment on page 78.
Revision as of 22:01, 29 July 2020 by imported>Volume Importer
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Leaves pinnately lobed (lobes to 13, sinuses relatively shallow to deep, sometimes almost to midrib; ultimate margins entire or toothed). 2n = 14.


Phenology: Flowering mid summer–early fall.
Habitat: Wet or dry prairies, fens, open, disturbed sites
Elevation: 100–500 m

Distribution

V21-172-distribution-map.gif

Ala., Ga., Ill., Ky., Mich., Ohio, Tenn.

Discussion

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

not tailed +, rounded +  and obtuse +
connate +  and distinct +
obtuse;acute +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
racemiform +  and paniculiform +
indeterminate +  and determinate +
Jennifer A. Clevinger +
(Elliott) A. Gray +
bristlelike +
coroniform +
truncate +, round +, hastate +, cordate +  and attenuate +
Silphium pinnatifidum +
compound +  and simple +
3 cm30 mm <br />0.03 m <br /> (40 cm400 mm <br />0.4 m <br />) +
lobed;sagittate;ovate;sagittate;ovate;lanceolate;deltate;cordate +
1 cm10 mm <br />0.01 m <br /> (40 cm400 mm <br />0.4 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
sessile +  and petiolate +
0.7 cm7 mm <br />0.007 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
hairy +  and glabrous +
less orbiculate +  and obovate or cuneate +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
fertile +  and bisexual +
fertile +  and bisexual +
Ala. +, Ga. +, Ill. +, Ky. +, Mich. +, Ohio +  and Tenn. +
100–500 m +
scabrous +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Wet or dry prairies, fens, open, disturbed sites +
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 +
dentate to pinnatifid or palmatifid +  and entire +
toothed +  and entire +
2-carpellate +
persistent +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Flowering mid summer–early fall. +
23 +  and 33 +
unequal +  and subequal +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Enceliinae +, Undefined (tribe Undefined) subtribe Engelmanniinae +, Undefined (tribe Undefined) subtribe Spilanthinae +, Undefined (tribe Undefined) subtribe Verbesininae +  and Undefined (tribe Undefined) subtribe Zinniinae +
Silphium terebinthinaceum var. pinnatifidum +
Silphium terebinthinaceum +
variety +
cylindric +
cylindric +
shorter to longer than campanulate +
entire +  and toothed +
20 cm200 mm <br />0.2 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +
40 cm400 mm <br />0.4 m <br /> (100 cm1,000 mm <br />1 m <br />) +