which can be found in context by locating Trochila in the page: http://www.mycolog.com/CHAP4b.htmTrochila is about halfway through this very large web page. This kind of ascoma opens somewhat like a clam, because a lid pops off, exposing the white hymenium underneath.
Looking back through the micrographs, there appears to be plenty of evidence of split ascoma remains, as well as hyphal blooms. The Sol 73 photos show some good examples. The photo:
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Though the Trochila is a fungus, lichen is essentially comprised of a symbiotic mix of fungus and algae, so any fungal structure is a candiate to be observed in a lichen on Mars.
Note also the "matchstick" like structures found in Order Clavicipitales, found also described in:
http://www.mycolog.com/CHAP4b.htm Best regards, Horace Heffner http://www.mtaonline.net/~hheffner/