Silphium pinnatifidum
Silphium pinnatifidum | |
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Scientific classification | |
Kingdom: | Plantae |
(unranked): | Angiosperms |
(unranked): | Eudicots |
(unranked): | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Tribe: | Heliantheae |
Genus: | Silphium |
Species: | S. pinnatifidum |
Binomial name | |
Silphium pinnatifidum Elliott | |
Silphium pinnatifidum, the tansy rosinweed[2] or cutleaf prairie dock, is a species of flowering plant in the Composite family. It is native to the Southeastern United States where it is found in Alabama, Georgia, Kentucky, and Tennessee.[3] Its habitat is prairies and cedar glades, where it can be found in either wet or dry locations.
![](../I/m/Silphium_pinnatifidum_phyllaries.jpg)
Although most populations are distinct, intermediate populations have been reported between Silphium pinnatifidum and Silphium terebinthinaceum, and some botanists consider S. pinnatifidum only a variety of S. terebinthinaceum. S. pinnatifidum was once thought to be a result of hybridization between Silphium terebinthinaceum and Silphium laciniatum, although molecular studies have indicated that S. pinnatifidum is too closely allied to S. terebinthinaceum for this to be the case.[4]
References
- ↑ "Silphium pinnatifidum". NatureServe. Retrieved 2014-05-04.
- ↑ "Silphium pinnatifidum". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 15 November 2015.
- ↑ Flora of the Southern and Mid-Atlantic States
- ↑ Jessee, L.H. and G. Yatskievych. 2011. A new putative hybrid in Silphium (Asteraceae: Heliantheae). Phytoneuron 2011–62: 1–7.