Arisaema triphyllum(L.) Schott

Jack-in-the-Pulpit

WFO wfo-0000274695 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Arisaema triphyllum, photographed by Larry Jensen
fig. a Larry Jensen, CC BY 4.0 / 2022-06-11 / obs. 205563633
Arisaema triphyllum, photographed by Mark Apgar
fig. b Mark Apgar, CC BY 4.0 / obs. 205222345
Arisaema triphyllum, photographed by Clay Gibbons
fig. c Clay Gibbons, CC BY 4.0 / obs. 205023765
Arisaema triphyllum, photographed by Kathy Hofmeyer Woughter
fig. d Kathy Hofmeyer Woughter, CC BY 4.0 / obs. 205560440
Arisaema triphyllum, photographed by Nic Tippery
fig. e Nic Tippery, CC BY 4.0 / obs. 205204449
Arisaema triphyllum, photographed by Joseph Aubert
fig. f Joseph Aubert, CC BY 4.0 / obs. 205356643
Arisaema triphyllum, photographed by Kalvin Chan
fig. g Kalvin Chan, CC BY 4.0 / obs. 203765893
Arisaema triphyllum, photographed by Scott Allen Davis
fig. h Scott Allen Davis, CC BY 4.0 / obs. 203735461

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Confused withby our own model

These are not lookalikes we guessed at. Each one is a species our identification model genuinely mistook for this plant, and how many times. The error rate is published.

Flowering n = 11,972 observations

Peak flowering in May, from 11,972 community-annotated observations worldwide. This is a global aggregate, not a forecast for your garden: the same species flowers on different dates in different hemispheres, and citizen-science records cluster near cities, at weekends, and in spring. Where a species has fewer than 30 annotated records we do not draw this chart at all.

Also published as 34 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Alocasia atrorubens (Aiton) Raf.
  • Alocasia lobata Raf.
  • Alocasia triphylla (L.) Raf.
  • Arisaema atrorubens (Aiton) Blume
  • Arisaema atrorubens f. pallascens (Sims) Raymond
  • Arisaema atrorubens f. viride (Engl.) Fernald
  • Arisaema atrorubens f. zebrinum (Sims) Fernald
  • Arisaema atrorubens var. viride Engl.
  • Arisaema atrorubens var. zebrinum (Sims) Raymond
  • Arisaema brasilianum Blume
  • Arisaema deflexum Nieuwl. & K.Just
  • Arisaema hastatum Blume
  • Arisaema quinatum var. obtuso-quinatum Alph.Wood
  • Arisaema triphyllum f. triphyllum
  • Arisaema triphyllum f. viride (Engl.) Farw.
  • Arisaema triphyllum f. zebrinum (Sims) F.Seym.
  • Arisaema triphyllum var. bispadiceum Engl.
  • Arisaema triphyllum var. bispathaceum Engl.
  • Arisaema triphyllum var. montanum Fernald
  • Arisaema triphyllum var. stewardsonii (Britton) G.T.Stevens ex Wieg. & Eames
  • Arisaema triphyllum var. triphyllum
  • Arisaema triphyllum var. trispadiceum Engl.
  • Arisaema triphyllum var. typicum Engl.
  • Arisaema triphyllum var. viride (Engl.) Engl.

and 10 more.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.

We publish what we can source and we say so when we cannot. This page has no care advice, no toxicity claim and no native range, because we do not yet have those from a source we can cite.