Authentic Wisconsin.  Jack-in-the-pulpit - Arisaema triphyllum


Jack-in-the-pulpit in the Oak Savanna on May 3, 2020 in Madison, Wisconsin.

Above: Jack-in-the-pulpit in the Oak Savanna on May 3, 2020.


Jack-in-the-pulpit - Arisaema triphyllum (Spring Ephemeral)

The "Jack", or spadix sits in a tubular base with a hood (the "pulpit", or spathe). The spadix is light green to reddish green. The spathe is light green to purplish green and often dotted with white or purplish stripes.

A native perennial, the plant flowers in May and June. However, not all the flowers are "Jacks." Initially Jack-in-the-pulpits produce only male flowers but, in later years, Jack-in-the-pulpits may have male flowers on top and female flowers ("Jills") on the bottom. This all depends on how much energy has been stored in the plant's corm (a bulbous underground stem that stores the plant's carbohydrates).

Other names: Indian turnip

ack-in-the-pulpit in the Oak Savanna on May 3, 2020.


Above: Jack-in-the-pulpit in the Oak Savanna on May 3, 2020.


ack-in-the-pulpit in the Oak Savanna on May 7, 2020.


Above: Jack-in-the-pulpit in the Oak Savanna on May 7, 2020.


ack-in-the-pulpit in the Oak Savanna on May 8, 2020.


Above: Jack-in-the-pulpit in the Oak Savanna on May 8, 2020.


For more information on Jack-in-the-pulpit, visit Wikipedia.

Or, visit the UW-Madison Wisconsin State Herbarium website page about Jack-in-the-pulpit.


Jack-in-the-Pulpit in the Oak Savanna on May 9, 2020.
Jack-in-the-Pulpit in the Oak Savanna on May 9, 2020.
Jack-in-the-Pulpit in the Oak Savanna on May 9, 2020.
Jack-in-the-Pulpit in woods between the Oak Savanna and Marion Dunn on May 9, 2020.
Jack-in-the-Pulpit in woods between the Oak Savanna and Marion Dunn on May 9, 2020.
Jack-in-the-Pulpit in woods between the Oak Savanna and Marion Dunn on May 9, 2020.
Jack-in-the-Pulpit in woods between the Oak Savanna and Marion Dunn on May 9, 2020.
Jack-in-the-Pulpit in woods between the Oak Savanna and Marion Dunn on May 9, 2020.
Jack-in-the-Pulpit in woods between the Oak Savanna and Marion Dunn on May 9, 2020.
Jack-in-the-Pulpit in woods between the Oak Savanna and Marion Dunn on May 9, 2020.
Jack-in-the-Pulpit in woods between the Oak Savanna and Marion Dunn on May 9, 2020.
Jack-in-the-Pulpit in woods between the Oak Savanna and Marion Dunn on May 9, 2020.

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Wisconsin Wildflowers



Jack-in-the-pulpit
Ranunculus septentrionalis


Jack-in-the-pulpit in the Oak Savanna on May 3, 2020.

Jack-in-the-pulpit in the Oak Savanna on May 3, 2020.

Jack-in-the-pulpit in the Oak Savanna on May 3, 2020.

Jack-in-the-pulpit in the Oak Savanna on May 3, 2020.

Jack-in-the-pulpit in the Oak Savanna on May 3, 2020.

Jack-in-the-pulpit in the Oak Savanna on May 3, 2020.


Above: Jack-in-the-pulpit in the Oak Savanna (5/03/20)


Jack-in-the-pulpit in Oak Savanna on May 4, 2020

Jack-in-the-pulpit in Oak Savanna on May 4, 2020


Above: Jack-in-the-pulpit in the Oak Savanna (5/04/20)


Jack-in-the-pulpit in Oak Savanna on May 6, 2020

Jack-in-the-pulpit in Oak Savanna on May 6, 2020

Jack-in-the-pulpit in Oak Savanna on May 6, 2020

Jack-in-the-pulpit in Oak Savanna on May 6, 2020

Jack-in-the-pulpit in Oak Savanna on May 6, 2020


Above: Jack-in-the-pulpit in the Oak Savanna (5/06/20)


Jack-in-the-pulpit with no "Jack" by Duck Pond parking lot on May 13, 2020

Jack-in-the-pulpit with no "Jack" by Duck Pond parking lot on May 13, 2020


Above: Jack-in-the-pulpit with no "Jack" by Duck Pond parking lot (5/13/20)



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