1) Order marchantiales 2) Plant order 
Marchantiales is an order of thallose liverworts that includes species like Marchantia polymorpha, a widespread plant often found beside rivers, and Lunularia cruciata, a common and often troublesome weed in moist, temperate gardens and greenhouses. As in other bryophytes, the gametophyte generation is dominant, with the sporophyte existing as a s...
(from the article `bryophyte`) ...longitudinal line; jacket with thickenings on cell walls; in South and Central America and New Zealand; a single genus, Monoclea, with 1 ...
[n] - liverworts with gametophyte differentiated internally
order Marchantiales noun liverworts with gametophyte differentiated internally