Compilation
Arisaema stewardsonii

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Name

Identification
Isotype of Arisaema stewardsonii Britton [family ARACEAE ] (stored under name); Verified by L. Mellichamp, 1972 Arisaema stewardsonii Britton [family ARACEAE ] Verified by Not on sheet,
Related name
  • Arisaema stewardsonii
  • Arisaema triphyllum
Common name
  • Jack-in-the-pulpit, Flora of North America Vol. 22
  • petit-prêcheur, Flora of North America Vol. 22
  • IIndian-turnip, Flora of North America Vol. 22

Flora

Entry for Arisaema triphyllum (Linnaeus) Schott [family ARACEAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 22,
Names
Arisaema triphyllum (Linnaeus) Schott [family ARACEAE], in H. W. Schott and S. L. Endlicher,Meletemata Botanica, 17. 1832
Arum triphyllum Linnaeus [family ARACEAE], Sp. Pl., 2: 965. 1753
Arisaema acuminatum Small [family ARACEAE]
Arisaema atrorubens (Aiton) Blume [family ARACEAE]
Arisaema polymorphum (Buckley) Chapman [family ARACEAE]
Arisaema pusillum (Peck) Nash [family ARACEAE]
Arisaema quinatum (Nuttall) Schott [family ARACEAE]
Arisaema stewardsonii Britton [family ARACEAE]
Arisaema triphyllum subsp. pusillum (Peck) Huttleston [family ARACEAE]
Arisaema triphyllum subsp. quinatum (Nuttall) Huttleston [family ARACEAE]
Arisaema triphyllum subsp. stewardsonii (Britton) Huttleston [family ARACEAE]
Arisaema triphyllum var. pusillum Peck [family ARACEAE]
Arisaema triphyllum var. stewardsonii (Britton) Stevens ex Wiegand & Eames [family ARACEAE]
Discussion
Although these morphological forms may be recognizable in the field, distinguishing these differences in herbarium specimens is often difficult, and there is much overlap occurs in expression of the characteristics supposedly defining infraspecific taxa. Numerous intermediate forms exist, including putative hybrid populations be tween the subspecies with 2n = 42 (D. G. Huttleston 1949, 1953). Given these problems and the sympatric ranges of the "subspecies" recognized by previous workers, A. triphyllum is treated here as one highly variable species.
In addition to the above variability within the Arisaema triphyllum complex, putative hybrid populations between A. triphyllum and A. dracontium also occur naturally (L. L. Sanders and C. J. Burk 1992). These plants do not produce mature fruits but do reproduce vegetatively.

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