| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| DRLE6 | Dryopteris leptocladia (Fée) Maxon | Thelypteris leptocladia | Thelypteridaceae
|
| DRLI3 | Dryopteris linkiana (K. Presl) Maxon | Thelypteris linkiana | Thelypteridaceae
|
| DRLI2 | Dryopteris linnaeana C. Christens. | Gymnocarpium dryopteris | Dryopteridaceae
|
| DRLU | Dryopteris ludoviciana (Kunze) Small | southern woodfern | Dryopteridaceae
|
| DRMA5 | Dryopteris macilenta (E. St. John) Correll | Thelypteris hispidula var. versicolor | Thelypteridaceae
|
| DRMA4 | Dryopteris marginalis (L.) Gray | marginal woodfern | Dryopteridaceae
|
| DRME2 | Dryopteris megalodus (Schkuhr) Urban | Thelypteris pennata | Thelypteridaceae
|
| DRNE6 | Dryopteris nemorosa (Humb. & Bonpl. ex Willd.) Urban | Ctenitis nemorosa | Dryopteridaceae
|
| DRNE2 | Dryopteris ×neowherryi W.H. Wagner | | Dryopteridaceae
|
| DRNE7 | Dryopteris nevadensis (Baker) Underwood | Thelypteris nevadensis | Thelypteridaceae
|
| DRNO3 | Dryopteris normalis C. Christens. | Thelypteris kunthii | Thelypteridaceae
|
| DRNO4 | Dryopteris noveboracensis (L.) Gray | Thelypteris noveboracensis | Thelypteridaceae
|
| DRNU | Dryopteris nuda Underwood | Dryopteris glabra | Dryopteridaceae
|
| DROL2 | Dryopteris oligophylla Maxon | Thelypteris invisa | Thelypteridaceae
|
| DROP | Dryopteris opposita (Vahl) Urban | Thelypteris opposita | Thelypteridaceae
|
| DROR2 | Dryopteris oregana C. Christens. | Thelypteris nevadensis | Thelypteridaceae
|
| DROR3 | Dryopteris oreopteris auct. non (Ehrh.) Maxon | Thelypteris quelpaertensis | Thelypteridaceae
|
| DRPA12 | Dryopteris paleacea (D. Don) Hand.-Maz. | Dryopteris wallichiana | Dryopteridaceae
|
| DRPA5 | Dryopteris parallelogramma (Kunze) Alston | Dryopteris wallichiana | Dryopteridaceae
|
| DRPA14 | Dryopteris parasitica (L.) Kuntze | Thelypteris parasitica | Thelypteridaceae
|
| DRPA6 | Dryopteris parvula Robins. | little woodfern | Dryopteridaceae
|
| DRPA15 | Dryopteris patens (Sw.) Kuntze | Thelypteris patens | Thelypteridaceae
|
| DRPAR | Dryopteris patula (Sw.) Underwood var. rossii (C. Christens.) C. Christens. | Dryopteris rossii | Dryopteridaceae
|
| DRPH2 | Dryopteris phegopteris (L.) C. Christens. | Phegopteris connectilis | Thelypteridaceae
|
| DRPI3 | Dryopteris piedrensis C. Christens. | Thelypteris piedrensis | Thelypteridaceae
|
| DRPI2 | Dryopteris ×pittsfordensis Slosson | | Dryopteridaceae
|
| DRPO5 | Dryopteris podosora W.H. Wagner & T. Flynn | Kauaikinana woodfern | Dryopteridaceae
|
| DRPO4 | Dryopteris poiteana (Bory) Urban | Thelypteris poiteana | Thelypteridaceae
|
| DRPO3 | Dryopteris ×poyseri Wherry | Dryopteris clintoniana | Dryopteridaceae
|
| DRREC | Dryopteris reptans (J.F. Gmel.) C. Christens. var. conformis C. Christens. | Thelypteris reptans var. reptans | Thelypteridaceae
|
| DRRE3 | Dryopteris reptans (J.F. Gmel.) C. Christens. | Thelypteris reptans var. reptans | Thelypteridaceae
|
| DRRE4 | Dryopteris resinifera (Desv.) Weatherby | Thelypteris resinifera | Thelypteridaceae
|
| DRRE5 | Dryopteris reticulata (L.) Urban | Thelypteris reticulata | Thelypteridaceae
|
| DRRO3 | Dryopteris robertiana (Hoffmann) C. Christens. | Gymnocarpium robertianum | Dryopteridaceae
|
| DRRO4 | Dryopteris rolandii C. Christens. | Thelypteris rolandii | Thelypteridaceae
|
| DRRO2 | Dryopteris rossii C. Christens. | Ross' woodfern | Dryopteridaceae
|
| DRSA3 | Dryopteris sancta (L.) Kuntze | Thelypteris sancta | Thelypteridaceae
|
| DRSA | Dryopteris sandwicensis (Hook. & Arn.) C. Christens. | Pacific woodfern | Dryopteridaceae
|
| DRSA2 | Dryopteris saxatilis (R. St. John) Broun | Thelypteris kunthii | Thelypteridaceae
|
| DRSC2 | Dryopteris sclerophylla (Poepp. ex Spreng.) C. Christens. | Thelypteris sclerophylla | Thelypteridaceae
|
| DRSE2 | Dryopteris ×separabilis Small (pro sp.) | | Dryopteridaceae
|
| DRSE4 | Dryopteris serra (Sw.) Kuntze | Thelypteris serra | Thelypteridaceae
|
| DRSE5 | Dryopteris serrata (Cav.) C. Christens. | Thelypteris serrata | Thelypteridaceae
|
| DRSE | Dryopteris setigera auct. non Blume | Macrothelypteris torresiana | Thelypteridaceae
|
| DRSI3 | Dryopteris simulata Davenport | Thelypteris simulata | Thelypteridaceae
|
| DRSL | Dryopteris ×slossoniae Wherry ex Lellinger | | Dryopteridaceae
|
| DRSPA | Dryopteris spinulosa (O.F. Muell.) Watt var. americana (Fisch. ex Kunze) Fern. | Dryopteris campyloptera | Dryopteridaceae
|
| DRSPC2 | Dryopteris spinulosa (O.F. Muell.) Watt var. concordiana (Davenport) Eastman | Dryopteris intermedia | Dryopteridaceae
|
| DRSPD2 | Dryopteris spinulosa (O.F. Muell.) Watt var. dilatata auct. non (Hoffmann) Underwood | Dryopteris expansa | Dryopteridaceae
|
| DRSPF | Dryopteris spinulosa (O.F. Muell.) Watt var. fructuosa (Gilbert) Trudell | Dryopteris triploidea | Dryopteridaceae
|
| DRSPI | Dryopteris spinulosa (O.F. Muell.) Watt var. intermedia (Muhl. ex Willd.) Underwood | Dryopteris intermedia | Dryopteridaceae
|
| DRSP4 | Dryopteris spinulosa (O.F. Muell.) Watt | Dryopteris carthusiana | Dryopteridaceae
|
| DRSP8 | Dryopteris sprengelii (Kaulfuss) Kuntze | Thelypteris balbisii | Thelypteridaceae
|
| DRST7 | Dryopteris stegnogrammoides (Baker) C. Christens. | Pneumatopteris sandwicensis | Thelypteridaceae
|
| DRSU8 | Dryopteris subbipinnata W.H. Wagner & Hobdy | Ainahou Valley woodfern | Dryopteridaceae
|
| DRSU6 | Dryopteris subincisa (Willd.) Urban | Megalastrum subincisa | Dryopteridaceae
|
| DRSU4 | Dryopteris submarginalis (Langsd. & Fisch.) C. Christens. | Ctenitis submarginalis | Dryopteridaceae
|
| DRSU5 | Dryopteris subtetragona (Link) Maxon | Thelypteris tetragona | Thelypteridaceae
|
| DRTE4 | Dryopteris tenebrosa W.H. Wagner | Na Pali-Kona woodfern | Dryopteridaceae
|
| DRTHH | Dryopteris thelypteris (L.) Sw. var. haleana (Fern.) Broun & Weatherby | Thelypteris palustris var. pubescens | Thelypteridaceae
|
| DRTHP | Dryopteris thelypteris (L.) Sw. var. pubescens (Lawson) A.R. Prince ex Weatherby | Thelypteris palustris var. pubescens | Thelypteridaceae
|
| DRTH4 | Dryopteris thelypteris auct. non (L.) Sw. | Thelypteris palustris var. pubescens | Thelypteridaceae
|
| DRTR | Dryopteris ×triploidea Wherry | | Dryopteridaceae
|
| DRUL2 | Dryopteris ×uliginosa (A. Braun ex Dowell) Druce | | Dryopteridaceae
|
| DRUL | Dryopteris uliginosa (Kunze) C. Christens., non (A. Braun ex Dowell) Druce | Macrothelypteris torresiana | Thelypteridaceae
|
| DRUN | Dryopteris unidentata (Hook. & Arn.) C. Christens. | onetooth woodfern | Dryopteridaceae
|
| DRVE4 | Dryopteris versicolor (R. St. John) Broun | Thelypteris hispidula var. versicolor | Thelypteridaceae
|
| DRWA | Dryopteris wallichiana (Spreng.) Hyl. | alpine woodfern | Dryopteridaceae
|
| DRWH | Dryopteris wherryi F.W. Crane | Dryopteris celsa | Dryopteridaceae
|
| DRYOP | Dryopteris Adans. | woodfern | Dryopteridaceae
|
| DRAL5 | Drypetes alba Poit. | cafeillo | Euphorbiaceae
|
| DRDI | Drypetes diversifolia Krug & Urban | milkbark | Euphorbiaceae
|
| DRGL2 | Drypetes glauca Vahl | varital | Euphorbiaceae
|
| DRIL | Drypetes ilicifolia Krug & Urban | rosewood | Euphorbiaceae
|
| DRLA3 | Drypetes lateriflora (Sw.) Krug & Urban | guiana plum | Euphorbiaceae
|
| DRPH | Drypetes phyllanthoides (Rock) Sherff | Flueggea neowawraea | Euphorbiaceae
|
| DRYPE | Drypetes Vahl | drypetes | Euphorbiaceae
|
| DRPA9 | Dryptodon patens (Hedw.) Brid. | dryptodon moss | Grimmiaceae
|
| DRYPT | Dryptodon Brid. | dryptodon moss | Grimmiaceae
|
| DUAR | Dubautia arborea (Gray) Keck | Mauna Kea dubautia | Asteraceae
|
| DUCIC | Dubautia ciliolata (DC.) Keck ssp. ciliolata | lava dubautia | Asteraceae
|
| DUCIG | Dubautia ciliolata (DC.) Keck ssp. glutinosa G.D. Carr | lava dubautia | Asteraceae
|
| DUCIJ | Dubautia ciliolata (DC.) Keck var. juniperoides (Gray) Keck | Dubautia ciliolata ssp. ciliolata | Asteraceae
|
| DUCIT | Dubautia ciliolata (DC.) Keck var. trinervia Hbd. p.p. | Dubautia menziesii | Asteraceae
|
| DUCI | Dubautia ciliolata (DC.) Keck | lava dubautia | Asteraceae
|
| DUCO2 | Dubautia coriacea (Sherff) Keck | Dubautia thyrsiflora | Asteraceae
|
| DUDE | Dubautia ×demissifolia (Sherff) Keck (pro sp.) | | Asteraceae
|
| DUDO | Dubautia dolosa (O. Deg. & Sherff) G.D. Carr | Maui dubautia | Asteraceae
|
| DUFA2 | Dubautia ×fallax Sherff | | Asteraceae
|
| DUFU | Dubautia ×fucosa Sherff | Dubautia fallax | Asteraceae
|
| DUHE | Dubautia herbstobatae G.D. Carr | Keaau Valley dubautia | Asteraceae
|
| DUHI | Dubautia hillebrandii (Mann) Keck | Dubautia linearis ssp. hillebrandii | Asteraceae
|
| DUIMA | Dubautia imbricata St. John & G.D. Carr ssp. acronaea G.D. Carr | bog dubautia | Asteraceae
|
| DUIMI | Dubautia imbricata St. John & G.D. Carr ssp. imbricata | bog dubautia | Asteraceae
|
| DUIM | Dubautia imbricata St. John & G.D. Carr | bog dubautia | Asteraceae
|
| DUKNF | Dubautia knudsenii Hbd. ssp. filiformis G.D. Carr | forest dubautia | Asteraceae
|
| DUKNK | Dubautia knudsenii Hbd. ssp. knudsenii | forest dubautia | Asteraceae
|
| DUKNN | Dubautia knudsenii Hbd. ssp. nagatae (St. John) G.D. Carr | forest dubautia | Asteraceae
|
| DUKND | Dubautia knudsenii Hbd. var. degeneri Sherff | Dubautia laxa ssp. laxa | Asteraceae
|
| DUKN | Dubautia knudsenii Hbd. | forest dubautia | Asteraceae
|
| DUKO | Dubautia kohalae (Skottsberg) St. John | Dubautia fallax | Asteraceae
|