In 1958, Rica Erickson wrote "Triggerplants", describing habitat, distribution, and plant forms (ephemeral, creeping, leafy-stemmed, rosette, tufted, scale-leaved, and tropical). It was Erickson that began placing certain species into these morphologically-based groups, which may or may not resemble true taxonomic divergences. It was not until the 1970s and 1980s that research of the trigger physiology was begun in the lab of Dr. Findlay of Flinders University. Douglas Darnowski added to the growing library of knowledge on "Stylidium" when he published his book "Triggerplants" in 2002, describing an overview of habitat, plant morphology, carnivory, and research done to date. Following its publication, he co-founded the International Triggerplant Society.