Jack-in-the-Pulpit

Jack In The PulpitJack-in-the-Pulpit — 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.

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