| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| DOVYA | Dovyalis E. Mey. ex Arn. | Ceylon gooseberry | Flacourtiaceae
|
| DOBA | Downingia bacigalupii Weiler | Bach's calicoflower | Campanulaceae
|
| DOBE | Downingia bella Hoover | Hoover's calicoflower | Campanulaceae
|
| DOBIB | Downingia bicornuta Gray var. bicornuta | doublehorn calicoflower | Campanulaceae
|
| DOBIP | Downingia bicornuta Gray var. picta Hoover | doublehorn calicoflower | Campanulaceae
|
| DOBI | Downingia bicornuta Gray | doublehorn calicoflower | Campanulaceae
|
| DOCOB3 | Downingia concolor Greene ssp. brevior (McVaugh) Beauchamp | Downingia concolor var. brevior | Campanulaceae
|
| DOCOB | Downingia concolor Greene var. brevior McVaugh | maroonspot calicoflower | Campanulaceae
|
| DOCOC | Downingia concolor Greene var. concolor | maroonspot calicoflower | Campanulaceae
|
| DOCOT | Downingia concolor Greene var. tricolor (Greene) Jepson | maroonspot calicoflower | Campanulaceae
|
| DOCO2 | Downingia concolor Greene | maroonspot calicoflower | Campanulaceae
|
| DOCU | Downingia cuspidata (Greene) Greene ex Jepson | toothed calicoflower | Campanulaceae
|
| DOELB | Downingia elegans (Dougl. ex Lindl.) Torr. var. brachypetala (Gandog.) McVaugh | elegant calicoflower | Campanulaceae
|
| DOELC | Downingia elegans (Dougl. ex Lindl.) Torr. var. corymbosa (A. DC.) Gray | Downingia elegans var. elegans | Campanulaceae
|
| DOELE | Downingia elegans (Dougl. ex Lindl.) Torr. var. elegans | elegant calicoflower | Campanulaceae
|
| DOEL | Downingia elegans (Dougl. ex Lindl.) Torr. | elegant calicoflower | Campanulaceae
|
| DOHU3 | Downingia humilis (Greene) Greene | Downingia pusilla | Campanulaceae
|
| DOIN | Downingia insignis Greene | harlequin calicoflower | Campanulaceae
|
| DOLA2 | Downingia laeta (Greene) Greene | Great Basin calicoflower | Campanulaceae
|
| DOMO2 | Downingia montana Greene | Sierra calicoflower | Campanulaceae
|
| DOORE | Downingia ornatissima Greene var. eximia (Hoover) McVaugh | folded calicoflower | Campanulaceae
|
| DOORO | Downingia ornatissima Greene var. ornatissima | folded calicoflower | Campanulaceae
|
| DOOR | Downingia ornatissima Greene | folded calicoflower | Campanulaceae
|
| DOPU2 | Downingia pulchella (Lindl.) Torr. | flatface calicoflower | Campanulaceae
|
| DOPU3 | Downingia pusilla (G. Don) Torr. | dwarf calicoflower | Campanulaceae
|
| DOWI | Downingia willamettensis M.E. Peck | Downingia yina | Campanulaceae
|
| DOYIM | Downingia yina Applegate var. major McVaugh | Downingia yina | Campanulaceae
|
| DOYI | Downingia yina Applegate | cascade calicoflower | Campanulaceae
|
| DOWNI | Downingia Torr. | calicoflower | Campanulaceae
|
| DOUN | Doxantha unguis-cati (L.) Miers | Macfadyena unguis-cati | Bignoniaceae
|
| DOEM | Doyerea emetocathartica Gros. | coralfruit | Cucurbitaceae
|
| DOYER | Doyerea Gros. | doyeria | Cucurbitaceae
|
| DRAD | Draba adamsii Ledeb. | Draba pauciflora | Brassicaceae
|
| DRAL4 | Draba albertina Greene | slender draba | Brassicaceae
|
| DRAL | Draba aleutica Ekman ex Hult�n | Aleutian draba | Brassicaceae
|
| DRAL8 | Draba allenii Fern. | Draba lactea | Brassicaceae
|
| DRALA | Draba alpina L. var. adamsii (Ledeb.) O.E. Schulz | Draba pauciflora | Brassicaceae
|
| DRALN | Draba alpina L. var. nana Hook. | Draba alpina | Brassicaceae
|
| DRAL2 | Draba alpina L. | alpine draba | Brassicaceae
|
| DRAPD | Draba apiculata C.L. Hitchc. var. daviesiae C.L. Hitchc. | Draba daviesiae | Brassicaceae
|
| DRAP | Draba apiculata C.L. Hitchc. | Draba globosa | Brassicaceae
|
| DRAP2 | Draba aprica Beadle | openground draba | Brassicaceae
|
| DRARC | Draba arabisans Michx. var. canadensis (Burnet) Fern. & Knowlt. | Draba glabella | Brassicaceae
|
| DRARS | Draba arabisans Michx. var. superiorensis Butters & Abbe | Draba arabisans | Brassicaceae
|
| DRAR | Draba arabisans Michx. | rock draba | Brassicaceae
|
| DRARG | Draba arctica J. Vahl ssp. groenlandica (Ekman) B�cher | Draba oblongata | Brassicaceae
|
| DRAR2 | Draba argyrea Rydb. | silver draba | Brassicaceae
|
| DRAR4 | Draba arida C.L. Hitchc. | desert draba | Brassicaceae
|
| DRASA | Draba asprella Greene var. asprella | rough draba | Brassicaceae
|
| DRASK | Draba asprella Greene var. kaibabensis C.L. Hitchc. | Kaibab draba | Brassicaceae
|
| DRASS | Draba asprella Greene var. stelligera O.E. Schulz | rough draba | Brassicaceae
|
| DRAST | Draba asprella Greene var. typica C.L. Hitchc. | Draba asprella var. asprella | Brassicaceae
|
| DRASZ | Draba asprella Greene var. zionensis (C.L. Hitchc.) Welsh & Reveal | Zion draba | Brassicaceae
|
| DRAS | Draba asprella Greene | rough draba | Brassicaceae
|
| DRASA2 | Draba asterophora Payson var. asterophora | Lake Tahoe draba | Brassicaceae
|
| DRASM | Draba asterophora Payson var. macrocarpa C.L. Hitchc. | Lake Tahoe draba | Brassicaceae
|
| DRAS2 | Draba asterophora Payson | Lake Tahoe draba | Brassicaceae
|
| DRAUL | Draba aurea Vahl ex Hornem. var. leiocarpa (Payson & St. John) C.L. Hitchc. | Draba aurea | Brassicaceae
|
| DRAUN | Draba aurea Vahl ex Hornem. var. neomexicana (Greene) Tidestrom | Draba aurea | Brassicaceae
|
| DRAU | Draba aurea Vahl ex Hornem. | golden draba | Brassicaceae
|
| DRAU2 | Draba aureola S. Wats. | Mt. Lassen draba | Brassicaceae
|
| DRBA | Draba barbata Pohle | Draba corymbosa | Brassicaceae
|
| DRBE3 | Draba bellii Holm | Draba corymbosa | Brassicaceae
|
| DRBOM2 | Draba borealis DC. var. maxima (Hult�n) Welsh | Draba borealis | Brassicaceae
|
| DRBO | Draba borealis DC. | boreal draba | Brassicaceae
|
| DRBR | Draba brachycarpa Nutt. ex Torr. & Gray | shortpod draba | Brassicaceae
|
| DRBR4 | Draba brachystylis Rydb. | shortstyle draba | Brassicaceae
|
| DRBRB | Draba breweri S. Wats. var. breweri | cushion draba | Brassicaceae
|
| DRBRC | Draba breweri S. Wats. var. cana (Rydb.) Rollins | cushion draba | Brassicaceae
|
| DRBRS | Draba breweri S. Wats. var. sublaxa Jepson | Draba breweri var. breweri | Brassicaceae
|
| DRBR2 | Draba breweri S. Wats. | cushion draba | Brassicaceae
|
| DRCA7 | Draba caeruleomontana Payson & St. John | Draba densifolia | Brassicaceae
|
| DRCA10 | Draba caesia M.F. Adams | Draba palanderiana | Brassicaceae
|
| DRCA5 | Draba californica (Jepson) Rollins & Price | California draba | Brassicaceae
|
| DRCA4 | Draba cana Rydb. | Draba breweri var. cana | Brassicaceae
|
| DRCA6 | Draba carnosula O.E. Schulz | Mt. Eddy draba | Brassicaceae
|
| DRCA8 | Draba caroliniana Walt. | Draba reptans | Brassicaceae
|
| DRCA9 | Draba cascadensis Payson & St. John | Draba praealta | Brassicaceae
|
| DRCH | Draba chamissonis G. Don | Cape Thompson draba | Brassicaceae
|
| DRCI | Draba cinerea M.F. Adams | grayleaf draba | Brassicaceae
|
| DRCO6 | Draba confusa Ehrh. | Draba incana | Brassicaceae
|
| DRCOC | Draba corrugata S. Wats. var. corrugata | Southern California draba | Brassicaceae
|
| DRCOS | Draba corrugata S. Wats. var. saxosa (A. Davids.) Munz & Johnston | Southern California draba | Brassicaceae
|
| DRCO | Draba corrugata S. Wats. | Southern California draba | Brassicaceae
|
| DRCO3 | Draba corymbosa R. Br. ex DC. | flat-top draba | Brassicaceae
|
| DRCR | Draba crassa Rydb. | thickleaf draba | Brassicaceae
|
| DRCRN | Draba crassifolia Graham var. nevadensis C.L. Hitchc. | Draba albertina | Brassicaceae
|
| DRCRT | Draba crassifolia Graham var. typica C.L. Hitchc. | Draba crassifolia | Brassicaceae
|
| DRCR2 | Draba crassifolia Graham | snowbed draba | Brassicaceae
|
| DRCRI | Draba cruciata Payson var. integrifolia C.L. Hitchc. & C.W. Sharsmith | Draba sharsmithii | Brassicaceae
|
| DRCR3 | Draba cruciata Payson | Mineral King draba | Brassicaceae
|
| DRCUC2 | Draba cuneifolia Nutt. ex Torr. & Gray var. californica Jepson | Draba californica | Brassicaceae
|
| DRCUC | Draba cuneifolia Nutt. ex Torr. & Gray var. cuneifolia | wedgeleaf draba | Brassicaceae
|
| DRCUF | Draba cuneifolia Nutt. ex Torr. & Gray var. foliosa Mohlenbrock & Voigt | Draba cuneifolia var. cuneifolia | Brassicaceae
|
| DRCUH | Draba cuneifolia Nutt. ex Torr. & Gray var. helleri (Small) O.E. Schulz | Draba cuneifolia var. cuneifolia | Brassicaceae
|
| DRCUI | Draba cuneifolia Nutt. ex Torr. & Gray var. integrifolia S. Wats. | wedgeleaf draba | Brassicaceae
|
| DRCUL | Draba cuneifolia Nutt. ex Torr. & Gray var. leiocarpa O.E. Schulz | Draba cuneifolia var. cuneifolia | Brassicaceae
|
| DRCUP | Draba cuneifolia Nutt. ex Torr. & Gray var. platycarpa (Torr. & Gray) S. Wats. | Draba platycarpa | Brassicaceae
|
| DRCUS | Draba cuneifolia Nutt. ex Torr. & Gray var. sonorae (Greene) Parish | Sonora draba | Brassicaceae
|
| DRCUT | Draba cuneifolia Nutt. ex Torr. & Gray var. typica C.L. Hitchc. | Draba cuneifolia var. cuneifolia | Brassicaceae
|
| DRCU | Draba cuneifolia Nutt. ex Torr. & Gray | wedgeleaf draba | Brassicaceae
|