| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| DESC3 | Desmodium scopulorum S. Wats. | Sonoran ticktrefoil | Fabaceae
|
| DESC5 | Desmodium scorpiurus (Sw.) Desv. | scorpion ticktrefoil | Fabaceae
|
| DESE2 | Desmodium sericophyllum Schldl. | ticktrefoil | Fabaceae
|
| DESE | Desmodium sessilifolium (Torr.) Torr. & Gray | sessileleaf ticktrefoil | Fabaceae
|
| DESP | Desmodium spirale DC. | Desmodium procumbens var. procumbens | Fabaceae
|
| DEST2 | Desmodium strictum (Pursh) DC. | pinebarren ticktrefoil | Fabaceae
|
| DESU4 | Desmodium supinum DC. | Desmodium incanum var. incanum | Fabaceae
|
| DESY | Desmodium sylvaticum Benth. | Desmodium procumbens var. procumbens | Fabaceae
|
| DETE3 | Desmodium tenuifolium Torr. & Gray | slimleaf ticktrefoil | Fabaceae
|
| DETO | Desmodium tortuosum (Sw.) DC. | dixie ticktrefoil | Fabaceae
|
| DETR4 | Desmodium triflorum (L.) DC. | threeflower ticktrefoil | Fabaceae
|
| DETW | Desmodium tweedyi Britt. | Tweedy's ticktrefoil | Fabaceae
|
| DEUN | Desmodium uncinatum auct. non (Jacq.) DC. | Desmodium sandwicense | Fabaceae
|
| DEVI4 | Desmodium viridiflorum (L.) DC. | velvetleaf ticktrefoil | Fabaceae
|
| DEWI2 | Desmodium wigginsii Schub. | Desmodium scopulorum | Fabaceae
|
| DEWI | Desmodium wislizeni Engelm. ex Gray | Desmodium retinens | Fabaceae
|
| DEWR3 | Desmodium wrightii Gray | Desmodium psilophyllum | Fabaceae
|
| DEWY | Desmodium wydlerianum Urban | Wydler's ticktrefoil | Fabaceae
|
| DESMO | Desmodium Desv. | ticktrefoil | Fabaceae
|
| DELU2 | Desmothamnus lucidus (Lam.) Small | Lyonia lucida | Ericaceae
|
| DECR | Deutzia crenata Sieb. & Zucc. | crenate pride-of-Rochester | Hydrangeaceae
|
| DEGL11 | Deutzia glabrata Kom. | | Hydrangeaceae
|
| DEGR3 | Deutzia gracilis Sieb. & Zucc. | slender pride of Rochester | Hydrangeaceae
|
| DEPA10 | Deutzia parviflora Bunge | Mongolian pride-of-Rochester | Hydrangeaceae
|
| DESCC | Deutzia scabra Thunb. var. candidissima (Froebel) Rehd. | Deutzia scabra | Hydrangeaceae
|
| DESC4 | Deutzia scabra Thunb. | fuzzy pride-of-Rochester | Hydrangeaceae
|
| DEUTZ | Deutzia Thunb. | pride-of-Rochester | Hydrangeaceae
|
| DENU8 | Deyeuxia nutkaensis J. Presl | Calamagrostis nutkaensis | Poaceae
|
| DIGU2 | Dialium guineense Willd. | velvet tamarind | Fabaceae
|
| DIALI | Dialium L. | dialium | Fabaceae
|
| DICY3 | Diamorpha cymosa (Nutt.) Britt. ex Small | Diamorpha smallii | Crassulaceae
|
| DISM3 | Diamorpha smallii Britt. ex Small | elf orpine | Crassulaceae
|
| DIAMO | Diamorpha Nutt. | diamorpha | Crassulaceae
|
| DICA11 | Dianella caerulea Sims | cerulean flaxlily | Liliaceae
|
| DISA6 | Dianella sandwicensis Hook. & Arn. | 'uki'uki | Liliaceae
|
| DIANE | Dianella Lam. | dianella | Liliaceae
|
| DIAMS | Dianthera americana L. var. subcoriacea (Fern.) Shinners | Justicia americana | Acanthaceae
|
| DIAM2 | Dianthera americana L. | Justicia americana | Acanthaceae
|
| DIAN3 | Dianthera angusta (Chapman) Small | Justicia angusta | Acanthaceae
|
| DICO8 | Dianthera comata L. | Justicia comata | Acanthaceae
|
| DICR4 | Dianthera crassifolia Chapman | Justicia crassifolia | Acanthaceae
|
| DIHU2 | Dianthera humilis (Michx.) Engelm. & Gray | Justicia ovata var. ovata | Acanthaceae
|
| DILA17 | Dianthera lanceolata (Chapman) Small | Justicia ovata var. lanceolata | Acanthaceae
|
| DIOVA2 | Dianthera ovata Walt. var. angusta Chapman | Justicia angusta | Acanthaceae
|
| DIOVL | Dianthera ovata Walt. var. lanceolata Chapman | Justicia ovata var. lanceolata | Acanthaceae
|
| DIOV2 | Dianthera ovata Walt. | Justicia ovata var. ovata | Acanthaceae
|
| DIPA11 | Dianthera parviflora (Buckl.) Gray | Carlowrightia parviflora | Acanthaceae
|
| DIPA12 | Dianthera parvifolia (Torr.) Gray | Carlowrightia torreyana | Acanthaceae
|
| DIAR | Dianthus armeria L. | Deptford pink | Caryophyllaceae
|
| DIAT | Dianthus atrorubens All. | Dianthus carthusianorum | Caryophyllaceae
|
| DIBA | Dianthus barbatus L. | sweetwilliam | Caryophyllaceae
|
| DICA19 | Dianthus carthusianorum L. | clusterhead | Caryophyllaceae
|
| DICA26 | Dianthus caryophyllus L. | carnation | Caryophyllaceae
|
| DIDE | Dianthus deltoides L. | maiden pink | Caryophyllaceae
|
| DIFR5 | Dianthus fragrans M.F. Adams | fragrant pink | Caryophyllaceae
|
| DIPL | Dianthus plumarius L. | feathered pink | Caryophyllaceae
|
| DIPR3 | Dianthus prolifer L. | Petrorhagia prolifera | Caryophyllaceae
|
| DIRE | Dianthus repens Willd. | boreal carnation | Caryophyllaceae
|
| DISU12 | Dianthus superbus L. | fringed pink | Caryophyllaceae
|
| DISY2 | Dianthus sylvestris Wulfen | woodland pink | Caryophyllaceae
|
| DIVE3 | Dianthus velutinus Guss. | Petrorhagia dubia | Caryophyllaceae
|
| DIANT | Dianthus L. | pink | Caryophyllaceae
|
| DIAS2 | Diapedium assurgens (L.) Kuntze | Dicliptera sexangularis | Acanthaceae
|
| DIBR6 | Diapedium brachiatum (Pursh) Kuntze | Dicliptera brachiata | Acanthaceae
|
| DIKR2 | Diapedium krugii (Urban) Britt. | Dicliptera krugii | Acanthaceae
|
| DIRE8 | Diapedium resupinatum (Vahl) Kuntze | Dicliptera resupinata | Acanthaceae
|
| DITO2 | Diapedium torreyi (Gray) Heller | Dicliptera resupinata | Acanthaceae
|
| DILAO | Diapensia lapponica L. ssp. obovata (F. Schmidt) Hult�n | Diapensia lapponica var. obovata | Diapensiaceae
|
| DILAL | Diapensia lapponica L. var. lapponica | pincushion plant | Diapensiaceae
|
| DILAO2 | Diapensia lapponica L. var. obovata F. Schmidt | pincushion plant | Diapensiaceae
|
| DILAR2 | Diapensia lapponica L. var. rosea Hult�n | Diapensia lapponica var. obovata | Diapensiaceae
|
| DILA | Diapensia lapponica L. | pincushion plant | Diapensiaceae
|
| DIOB2 | Diapensia obovata (F. Schmidt) Nakai | Diapensia lapponica var. obovata | Diapensiaceae
|
| DIAPE | Diapensia L. | diapensia | Diapensiaceae
|
| DICA17 | Diaperia candida (Torr. & Gray) Benth. | Evax candida | Asteraceae
|
| DIDR | Diaperia drummondii (Torr. & Gray) Benth. | Evax verna var. drummondii | Asteraceae
|
| DIMU6 | Diaperia multicaulis (DC.) Nutt. | Evax verna var. verna | Asteraceae
|
| DIPR2 | Diaperia prolifera (Nutt. ex DC.) Nutt. | Evax prolifera | Asteraceae
|
| DIRE10 | Diaphoranthema recurvata (L.) Beer | Tillandsia recurvata | Bromeliaceae
|
| DIFE | Diarina festucoides Raf. | Diarrhena americana | Poaceae
|
| DIAMO2 | Diarrhena americana Beauv. var. obovata Gleason | Diarrhena obovata | Poaceae
|
| DIAM | Diarrhena americana Beauv. | American beakgrain | Poaceae
|
| DIOB3 | Diarrhena obovata (Gleason) Brandenburg | obovate beakgrain | Poaceae
|
| DIARR | Diarrhena Beauv. | beakgrain | Poaceae
|
| DIAB2 | Dibaeis absoluta (Tuck.) Kalb & Gierl | | Baeomycetaceae
|
| DIBA4 | Dibaeis baeomyces (L. f.) Rambold & Hertel | | Baeomycetaceae
|
| DIRO4 | Dibaeis rosea (Pers.) Clem. | Dibaeis baeomyces | Baeomycetaceae
|
| DIBAE | Dibaeis Clem. | dibaeis | Baeomycetaceae
|
| DICA | Dicentra canadensis (Goldie) Walp. | squirrel corn | Fumariaceae
|
| DICH | Dicentra chrysantha (Hook. & Arn.) Walp. | Ehrendorferia chrysantha | Fumariaceae
|
| DICUO | Dicentra cucullaria (L.) Bernh. var. occidentalis (Rydb.) M.E. Peck | Dicentra cucullaria | Fumariaceae
|
| DICU | Dicentra cucullaria (L.) Bernh. | dutchman's breeches | Fumariaceae
|
| DIEX | Dicentra eximia (Ker-Gawl.) Torr. | turkey corn | Fumariaceae
|
| DIFOF | Dicentra formosa (Haw.) Walp. ssp. formosa | Pacific bleeding heart | Fumariaceae
|
| DIFON | Dicentra formosa (Haw.) Walp. ssp. nevadensis (Eastw.) Munz | Dicentra nevadensis | Fumariaceae
|
| DIFOO | Dicentra formosa (Haw.) Walp. ssp. oregona (Eastw.) Munz | Oregon bleeding heart | Fumariaceae
|
| DIFOB | Dicentra formosa (Haw.) Walp. var. brevifolia Henderson | Dicentra formosa ssp. formosa | Fumariaceae
|
| DIFOB2 | Dicentra formosa (Haw.) Walp. var. brevipes Henderson | Dicentra formosa ssp. formosa | Fumariaceae
|
| DIFO | Dicentra formosa (Haw.) Walp. | Pacific bleeding heart | Fumariaceae
|
| DINE | Dicentra nevadensis Eastw. | Sierra bleeding heart | Fumariaceae
|
| DIOC6 | Dicentra occidentalis (Rydb.) Fedde | Dicentra cucullaria | Fumariaceae
|