Definition of Jungermanniales
: a large and widely distributed order of predominantly tropical liverworts that grow from a definite apical cell, that are characterized by marked diversity of form but with simple primitive tissue organization, and that include the leafy liverworts together with certain lower forms with terrestrial habits and a simple branching thallus or a leafless thalloid shoot — compare acrogynae, anacrogynae — see jungermanniaceae
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Origin and Etymology of jungermanniales
New Latin, from Jungermannia, genus of liverworts + -ales
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