plural noun
Achla·​myd·​e·​ae | \¦ā-klə-ˈmi-dē-ˌē, ˌa-klə-\

Definition of Achlamydeae 

in some classifications

: a group of Apetalae comprising plants with flowers that lack a perianth

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First Known Use of Achlamydeae

1831, in the meaning defined above

History and Etymology for Achlamydeae

New Latin, from a- entry 2 + chlamyd- + -eae

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The first known use of Achlamydeae was in 1831

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