Pua Kala, (Argemone glauca), is an endemic Hawaiian poppy. While most endemic Hawaiian plants are notably devoid of thorns and poisons, Pua Kala is covered with sharp, thorny prickles on its leaves, stems, and seed pods, and the sap contains poisonous alkaloids. The poisonous sap of the Pua Kala was used in Hawaiian medicine to treat toothaches, ulcers, and other ailments. You can see Pua Kala on my Volcano Adventure, and my Hilo Birdwatching Adventure! Photo: Warren Costa
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