Aploperistomi

Translingual

Etymology

aplo- +‎ Peristomi

Proper noun

Aploperistomi

  1. (obsolete) A taxonomic subdivision within the division Peristomi – certain mosses having a single row of teeth in the peristome or none.

Usage notes

The characters used for distinguishing taxa among the mosses have changed so much since the 19th century that modern references don't even mention classifications such as these.