Leucobryum

noun
Leu·​cob·​ry·​um | \ lüˈkäbrēəm\

Definition of Leucobryum

: a genus of mosses that is related to Dicranum though sometimes made type of a separate family and is characterized by a tufted habit of growth resulting in the formation of thick cushiony masses and by great reduction in chlorophyll with many void cells resulting in a dull grayish white or greenish white coloration of the plant — see white moss

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History and Etymology for Leucobryum

New Latin, from leuc- + -bryum (from Greek bryon moss)

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