nomenclatorial act:
emend.
Page:
104
diagnosis:
Lyginopteridopsid plants with bilateral symmetrical ovules, and with nucellus free from integument except in the basal one-fifth of the ovule; ovules noncupulate, borne on abaxial surface of unmodified pinnules; nucellar beak lacks a cellular plug or column. Male: Pollen-bearing organs consisting of 2-8 basally fused sporangia
systematic position:
Lyginopteridopsida
Classification:
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