Jack in the Pulpit - Arisaema triphyllum

Arisaema triphyllum (Jack-in-the-Pulpit, Bog onion, Brown dragon, Indian turnip, Wake robin or Wild turnip) is a herbaceous perennial plant growing from a corm. It is a highly variable species typically growing from 30 to 65 cm in height with three parted leaves and flowers contained in a spadix that is covered by a hood. It is native to eastern North America, occurring in moist woodlands and thickets from Nova Scotia west to Minnesota, and south to southern Florida.

The leaves are trifoliate, with groups of three leaves growing together at the top of a long stem; each leaflet is 8-15 cm long and 3-7 cm broad. Plants are sometimes confused with Poison-ivy especially before the flowers appear or non-flowering plants. The inflorescences are shaped irregularly and grow to a length of up to 8 cm long. They are greenish-yellow with purple or brownish stripes. The spathe, known in this plant as "the pulpit" wraps around and covers over and contain a spadix ("Jack"), covered with tiny flowers of both sexes. The flowers are unisexual, in small plants most if not all the flowers are male, as plants age and grow larger the spadix produces more female flowers. This species flowers from April to June. The fruit are smooth, shiny green, 1 cm wide berries clustered on the thickened spadix. The fruits ripen in late summer and fall, turning a bright red color before the plants go dormant. Each berry produces 1 to 5 seeds typically, the seeds are white to light tan in color, rounded, often with flattened edges and a short sharp point at the top and a rounded bottom surface. If the seeds are freed from the berry they will germinate the next spring, producing a plant with a single rounded leaf. Seedlings need three or more years of growth before they become large enough to flower.


History and folklore
One account from the Meskwaki Indians, state that they would chop the herb's root into meat and leave the meat out for their enemies to find. The taste would not be detectable, but consuming the meat reportedly caused their enemies pain and death. They also used it to determine the fate of the sick by dropping a seed in a cup of water. If the seed went around four times clockwise, the patient would recover, otherwise they would not.


Poison
The oxalic acid and asparagine in jack in the pulpit are poisonous if ingested. Care should also be taken to avoid confusion with poison ivy, which has 3 leaflets somewhat similar in appearance.

Jack in the Pulpit

Author - IvoShandor. Under Creative Commons Attribution 2.5 License

Arisaema triphyllum - Jack in the Pulpit

Malvaviscus

Malvaviscus is a genus of shrubs in the mallow family Malvaceae, native to tropical America from Florida, Texas and Mexico south to Peru and Brazil. The flowers resemble those of the related genus Hibiscus, except that the petals are folded... more >>>

Zelkova

Zelkova is a genus of six species of deciduous trees in the elm family Ulmaceae, native to southern Europe, and southwest and eastern Asia. They vary in size from shrubs (Zelkova sicula) to large trees up to 35 m tall (Zelkova carpinifolia).... more >>>

Lantana (shrub verbena)

Lantana is a genus of about 150 species of perennial flowering plants, native to tropical regions of the Americas, Africa and existing as an imported plant in numerous areas, especially in the Australian-Pacific region. The genus includes both... more >>>

Olea

Olea is a genus of about 20 species in the family Oleaceae, native to warm temperate and tropical regions of southern Europe, Africa, southern Asia and Australasia. They are evergreen trees and shrubs, with small, opposite, entire leaves. The... more >>>

Manglietia

Manglietia is a genus of plant in family Magnoliaceae.


Selected species
Manglietia aromatica is a species of plant in the Magnoliaceae family. It is found in China and Vietnam. It is threatened by habitat... more >>>