plural noun
Po·​lyt·​ri·​cha·​ce·​ae | \ pəˌli‧trəˈkāsēˌē\

Definition of Polytrichaceae

: a family of usually large acrocarpous mosses (order Polytrichales) that have simple or branching erect shoots growing from an underground stem, leaves with the costae bearing longitudinal lamellae of variable structure, antheridia borne in conspicious saucer-shaped terminal rosettes, and capsules which are characteristically angular in cross section with a peristome several cells thick — see pogonatum , polytrichum

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Other Words from Polytrichaceae

polytrichaceous \ ⸗¦⸗⸗¦kāshəs \ adjective

History and Etymology for Polytrichaceae

New Latin, from Polytrichum, type genus + -aceae

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to boil down or concentrate

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