Asplenium rhizophyllum one collection on sandstone in the Shawnee Hills of Illinois. A triploid hybrid between walking fern and Tutwiler's spleenwort was accidentally produced in culture. A similar plant collected from limestone in Shepherdstown, West Virginia could have originated from the same parents, from an unreduced (diploid) gametophyte of Scott's spleenwort crossed with walking fern, or from an unreduced walking fern gametophyte crossed with ebony spleenwort. In 1813, Henry Muhlenberg listed lobed spleenwort as "Asplenium rhizophyllum" var. "pinnatifidum", although he did not provide a description distinguishing the variety from the typical species. It was described as the species "A. pinnatifidum" by Thomas
What Is It? What Is It? What Is It? is a 2005 American surrealist film written, edited, co-produced and directed by Crispin Glover. It stars Crispin Glover and Fairuza Balk and Steven C. Stewart. As of 2008, the film has only been shown at independent theaters, typically accompanied by a question-and-answer session, a one-hour dramatic narration of eight different profusely illustrated books as a slideshow, and a meet-and-greet/book signing with Glover. "What Is It?" is the first entry in a planned trilogy directed by Glover, followed by "It Is Fine! Everything Is Fine." and continued with "It Is Mine". The "adventures" of a