̷ ̷ˌ ̷ ̷ ̷ ̷ˈā(ˌ)lēz noun plural
Usage: capitalized
Etymology: New Latin, from Marchantia + -ales
: an order of Hepaticae comprising liverworts in which the gametophyte is differentiated internally into ventral storage tissue sometimes enclosing primitive conducting tissue and into a dorsal region of air chambers and in which the sporophyte has a jacket layer that is only one cell thick — see marchantiaceae