familyAsteraceae
tribeAsteraceae tribe Heliantheae
subtribeAsteraceae (tribe Heliantheae) subtribe Ecliptinae
genusSilphium
speciesSilphium asteriscus
varietySilphium asteriscus var. trifoliatum

Silphium asteriscus var. trifoliatum

(Linnaeus) J. A. Clevinger

Novon 14: 276. 2004.

Jennifer A. Clevinger
Common names: Whorled rosinweed
Basionym: Silphium trifoliatum Linnaeus Sp. Pl. 2: 920. 1753
Synonyms: Silphium atropurpureum Retzius ex Willdenow Silphium laevigatum Pursh
Treatment appears in FNA Volume 21. Treatment on page 82. Mentioned on page 81.
Revision as of 20:35, 16 December 2019 by FNA>Volume Importer

Plants 75–140 cm. Leaves: basal persistent; cauline mostly whorled (in 3s); faces glabrous or sparsely hairy. Paleae puberulent. Ray florets 11–16. Disc florets 35–90. 2n = 14.


Phenology: Flowering mid summer–early fall.
Habitat: Prairies, meadows, roadsides, along railways
Elevation: 100–900 m

Distribution

V21-189-distribution-map.gif

Ala., Ga., Ill., Ind., Ky., Md., N.Y., N.C., Ohio, Pa., S.C., Tenn., Va., W.Va.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Silphium asteriscus var. trifoliatum"
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Author
Jennifer A. Clevinger +
Authority
(Linnaeus) J. A. Clevinger +
Basionyms
Silphium trifoliatum +
Common name
Whorled rosinweed +
Distribution
Ala. +, Ga. +, Ill. +, Ind. +, Ky. +, Md. +, N.Y. +, N.C. +, Ohio +, Pa. +, S.C. +, Tenn. +, Va. +  and W.Va. +
Elevation
100–900 m +
Habitat
Prairies, meadows, roadsides, along railways +
Illustration copyright
Flora of North America Association +
Illustrator
Yevonn Wilson-Ramsey +
Number of lower taxa
0 +
Phenology
Flowering mid summer–early fall. +
Publication title
Novon +
Publication year
2004 +
Reference
None +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse grained fna xml/V19-20-21/V21 189.xml +
Special status
Endemic +
Synonyms
Silphium atropurpureum +  and Silphium laevigatum +
Taxon family
Asteraceae +
Taxon name
Silphium asteriscus var. trifoliatum +
Taxon parent
Silphium asteriscus +
Taxon rank
variety +
Volume
Volume 21 +