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Araceae
Arisaema

not marked as a favorite taxon Arisaema allegheniense R.E. Wyatt & A.H. Stoneburner. Common name: Allegheny Jack-in-the-pulpit. Phenology: Early May-late June. Habitat: Various moist forests, including hemlock-sugar maple, red spruce, and yellow birch. Distribution: This species seems to be restricted to higher elevations in the Allegheny and Blue Ridge Mountains ranging south to a few sites in extreme nw. Georgia, North Carolina, and South Carolina and north to West Virginia and Maryland.

Glossary (beta!)

Section: Pistillata.

ID notes: Unlike most other North American species in sect. Pistillata, Arisaema allegheniense typically produces extra lobes on its lateral leaflets, but these are smaller than the well-defined five lobes or leaflets of A. quinatum. Adult plants are smaller than both A. quinatum and A. triphyllum, but larger than most plants of A. pusillum" (Wyatt et al. 2025). The statement that "A. quinatum" is reported to flower later than A. pusillum or A. triphyllum when sympatric (Tennessee Flora Committee 2015) is probably based on plants of A. allegheniense.

Origin/Endemic status: Native

Synonymy ⓘ: = Wyatt et al (2025); < Arisaema pusillum (Peck) Nash — POWO; < Arisaema triphyllum (L.) Schott — FNA22, NS; < Arisaema triphyllum (L.) Schott ssp. pusillum (Peck) Huttl. — K4. Basionym: Arisaema allegheniense R.E. Wyatt & A.H. Stoneburner 2025

Links to other floras: < Arisaema triphyllum - FNA22

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Horticultural Information

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