Asplenium platyneuron plant. Similar buds have also been reported from the single-sorus spleenwort, "Asplenium monanthes". The species most similar to "Asplenium platyneuron" is the black-stemmed spleenwort, "A. resiliens". However, this stipe of this species is darker, and the pinnae are opposite, rather than alternate, along the rachis. Neither black-stemmed spleenwort nor the other pinnate American spleenworts have dimorphic fertile and sterile fronds. It might be confused with a young Christmas fern, "Polystichum acrostichoides", but that species is generally much larger and has a green, scaly stipe and rachis. It is very similar to Boydston's spleenwort, "Asplenium × boydstoniae", a backcross with Tutwiler's
Type A (artist collective) Cantz published a monograph featuring this collaboration with the IMA in September 2009. From 2009 to 2011 Type A embarked on two projects exploring fear, safety and authority: "Barrier" (2009) and "Trigger" (2011). "Barrier" is a large scale concrete sculpture installation recreating Jersey highway barriers and "Trigger" explores America’s obsession with guns. For "Trigger," Type A created a series of photographs which are printed and sold as shooting targets by Law Enforcement Targets Inc. With this project they practice what they call "Interpropriation" or “the act of interjecting themselves and actively participating in cultures outside the art world.” In 2012