WEphemeral plant
WAdoxa moschatellina
WAllium tricoccum
WAnemonoides blanda
WAnemonoides nemorosa
WAnemonoides ranunculoides
WCardamine concatenata
WCardamine diphylla
WClaytonia caroliniana
WClaytonia virginica
WCorydalis cava
WCorydalis solida
WDicentra canadensis
WDicentra cucullaria
WEnemion biternatum
WErigenia
WErythronium albidum
WErythronium americanum
WErythronium propullans
WEschscholzia
WGalanthus nivalis
WHoustonia caerulea
WHyacinthoides hispanica
WHyacinthoides non-scripta
WOxalis violacea
WPrimula sect. Dodecatheon
WPuschkinia
WScilla bifolia
WScilla forbesii
WScilla luciliae
WScilla mischtschenkoana
WScilla nana
WScilla sardensis
WScilla siberica
WTrillium erectum
WTrillium grandiflorum
WTrillium luteum
WTrillium nivale
WTrillium ovatum
WTrillium recurvatum
WTulipa agenensis
WTulipa albanica
WTulipa cypria
WTulipa gesneriana
WTulipa pulchella
WTulipa sprengeri
WTulipa turkestanica
WTulipa urumiensis