noun
liverworts with gametophyte differentiated internally
• Syn: ↑order Marchantiales
• Hypernyms: ↑plant order
• Member Holonyms: ↑Hepaticopsida, ↑class Hepaticopsida, ↑Hepaticae, ↑class Hepaticae
• Member Meronyms: ↑Marchantiaceae, ↑family Marchantiaceae
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\\ ̷ ̷ˌ ̷ ̷ ̷ ̷ˈā(ˌ)lēz\ noun pluralUsage: capitalized
: 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
Useful english dictionary. 2012.