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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Origin and Etymology of leucobryum
New Latin, from leuc- + -bryum (from Greek bryon moss) — more at bry-
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