Jack-in- the-pulpits (Arisaema triphyllum) are not the most colorful spring flowers, but what they lack in beauty they make up for in interesting characteristics. These easily-identified plants are full of surprises, from their ability to change from male to female (and back) to the bite of their calcium oxalate crystals, which can make your tongue feel like it’s full of burning splinters.
Jack-in- the-pulpit surfaces in wet, shaded woodland areas in mid-spring as a purpley-brown spike, all tucked up within itself. As the days meander toward summer, this spike unfolds into leaves and flower, with the plants growing as tall as two feet. The floral anatomy here includes a spadix of tiny flowers contained within a hooded spathe: Jack enclosed within his pulpit. » Continue Reading.