Xylonagra arborea [(Kellogg) Donn.Sm. & Rose]

Xylorhiza tortifolia [Greene]

Xylosma congesta [(Lour.) Merr.] syn. Xylosma japonica

Xylosma congesta Compacta syn. Xylosma japonica

Xylosma japonicum

Xylosma japonicum Compacta

Xylotheca kraussiana [Hochst.] syn. Oncoba kraussiana

Yua thomsonii [(M.A.Lawson) C.L.Li] syn. Parthenocissus thomsonii

Yucca aloifolia [L.]

Yucca aloifolia Jewel

Yucca aloifolia Marginata

Yucca aloifolia Quadricolor

Yucca aloifolia Tricolor

Yucca aloifolia Variegata

Yucca angustissima [Reveal]