T-Shirts: cross-leaved milkweed, milkweed, euphorbia lathyris, euphorbia, milkweed family, euphorbiaceae, seeds, seed pods, capsules, poisonous, ingenol, ingeol ester, witch milk, devil's milk, poison milk, woodpecker root, spring root, springwolf milk, four-line milkweed, vole wolf milk, wartwort