Do Doellingeria — flattop white aster Doellingeria umbellata var. pubens — hairy flattop white aster Doellingeria umbellata var. umbellata — tall flattop white aster, parasol whitetop Dr Draba — whitlowgrasses Draba alpina — alpine whitlowgrass Draba arabisans — rock whitlowgrass Draba aurea — golden whitlowgrass, golden draba Draba cana — canescent whitlowgrass, hairyfruit whitlowgrass Draba cinerea — ashy whitlowgrass, greyleaf whitlowgrass Draba glabella — smooth whitlowgrass Draba incana — hoary whitlowgrass Draba lactea — milky whitlowgrass Draba nemorosa — woodland whitlowgrass Draba nivalis — snow whitlowgrass, snow draba, yellow arctic whitlowgrass Draba norvegica — Norwegian whitlowgrass Draba reptans — Carolina whitlowgrass Dracocephalum — dragonheads Dracocephalum parviflorum — American dragonhead, dragonhead mint Drosera — sundews Drosera anglica — English sundew Drosera intermedia — spoonleaf sundew, spatulate-leaf sundew, floating sundew, narrowleaf sundew Drosera linearis — slenderleaf sundew, linear-leaf sundew Drosera rotundifolia — roundleaf sundew, dewplant Dryas — mountain avens Dryas drummondii — yellow mountain avens, Drummond's dryad Dryas integrifolia — white mountain avens Dryopteris — woodferns Dryopteris carthusiana — spinulose woodfern, spinulose shieldfern, toothed woodfern, narrow Buckler fern Dryopteris clintoniana — Clinton's woodfern Dryopteris cristata — crested woodfern Dryopteris expansa — spreading woodfern, northern Buckler fern, northern woodfern Dryopteris filix-mas — male fern, Dryopteris fragrans — fragrant woodfern Dryopteris goldieana — Goldie's woodfern Dryopteris intermedia — evergreen woodfern Dryopteris marginalis — marginal woodfern, leather woodfern Du Dulichium — threeway sedges Dulichium arundinaceum — threeway sedge Dupontia — tundra grasses Dupontia fisheri — Fischer's tundra grass, Fischer's dupontia Dy Dyssodia — dogweeds Dyssodia papposa — fœtid dogweed References See: Flora of Canada#References Canada,genus,D