Washingtonia

Trunk single, grey, often covered with persistent leaf bases. Leaves forming dense, usually elongate crown at top of trunk; lamina costapalmate, almost circular in outline, deeply divided, apex of lobes usually cleft or tattered into fibres, plication induplicate; segments lanceolate, basally connate, bearing cottony fibres between segments, sometimes drooping; petiole split at base, armed or not; abaxial hastula absent; adaxial hastula irregularly shaped. Inflorescence axillary, paniculate, much branched, arching beyond leaves. Flowers subsessile, outer perianth segments fused, inner fused into tube basally; stamens 6, dorsifixed; carpels 3, styles fused. Fruit a drupe, ca. 10 mm long, black, exocarp smooth; mesocarp thin, fleshy; endocarp thin. Seeds ellipsoid.