| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| DUCO4 | Dudleya compacta Rose | Dudleya farinosa | Crassulaceae
|
| DUCO5 | Dudleya congesta Rose | Dudleya lanceolata | Crassulaceae
|
| DUCO3 | Dudleya cotyledon (Jacq.) Britt. & Rose | Dudleya caespitosa | Crassulaceae
|
| DUCYA | Dudleya cymosa (Lem.) Britt. & Rose ssp. agourensis K. Nakai | canyon liveforever | Crassulaceae
|
| DUCYC | Dudleya cymosa (Lem.) Britt. & Rose ssp. costafolia Bartel & Shevock | Pierpoint Springs dudleya | Crassulaceae
|
| DUCYC2 | Dudleya cymosa (Lem.) Britt. & Rose ssp. crebrifolia K. Nakai & Verity | San Gabriel River dudleya | Crassulaceae
|
| DUCYC3 | Dudleya cymosa (Lem.) Britt. & Rose ssp. cymosa | canyon liveforever | Crassulaceae
|
| DUCYG | Dudleya cymosa (Lem.) Britt. & Rose ssp. gigantea (Rose) Moran | Dudleya cymosa ssp. cymosa | Crassulaceae
|
| DUCYM | Dudleya cymosa (Lem.) Britt. & Rose ssp. marcescens Moran | marcescent dudleya | Crassulaceae
|
| DUCYM2 | Dudleya cymosa (Lem.) Britt. & Rose ssp. minor (Rose) Moran | Dudleya lanceolata | Crassulaceae
|
| DUCYO | Dudleya cymosa (Lem.) Britt. & Rose ssp. ovatifolia (Britt.) Moran | Santa Monica Mountains dudleya | Crassulaceae
|
| DUCYP | Dudleya cymosa (Lem.) Britt. & Rose ssp. paniculata (Jepson) K. Nakai | canyon liveforever | Crassulaceae
|
| DUCYP2 | Dudleya cymosa (Lem.) Britt. & Rose ssp. pumila K. Nakai | canyon liveforever | Crassulaceae
|
| DUCYS | Dudleya cymosa (Lem.) Britt. & Rose ssp. setchellii (Jepson) Moran | Dudleya setchellii | Crassulaceae
|
| DUCY | Dudleya cymosa (Lem.) Britt. & Rose | canyon liveforever | Crassulaceae
|
| DUDE4 | Dudleya delicata Rose | Dudleya saxosa ssp. aloides | Crassulaceae
|
| DUDE2 | Dudleya densiflora (Rose) Moran | San Gabriel Mountains liveforever | Crassulaceae
|
| DUEA | Dudleya eastwoodiae Rose | Dudleya farinosa | Crassulaceae
|
| DUED | Dudleya edulis (Nutt.) Moran | fingertips | Crassulaceae
|
| DUFA | Dudleya farinosa (Lindl.) Britt. & Rose | powdery liveforever | Crassulaceae
|
| DUGI | Dudleya gigantea Rose | Dudleya cymosa ssp. cymosa | Crassulaceae
|
| DUGN | Dudleya gnoma S. McCabe | | Crassulaceae
|
| DUGO | Dudleya goldmanii Rose | Dudleya lanceolata | Crassulaceae
|
| DUGR3 | Dudleya grandiflora Rose | Dudleya saxosa ssp. aloides | Crassulaceae
|
| DUGR | Dudleya greenei Rose | Greene's liveforever | Crassulaceae
|
| DUHA | Dudleya hassei (Rose) Moran | Dudleya virens ssp. hassei | Crassulaceae
|
| DUHU | Dudleya humilis Rose | Dudleya cymosa ssp. paniculata | Crassulaceae
|
| DULA | Dudleya lanceolata (Nutt.) Britt. & Rose | lanceleaf liveforever | Crassulaceae
|
| DULA5 | Dudleya laxa (Lindl.) Britt. & Rose | Dudleya cymosa ssp. cymosa | Crassulaceae
|
| DULU | Dudleya lurida Rose | Dudleya lanceolata | Crassulaceae
|
| DUMU | Dudleya multicaulis (Rose) Moran | manystem liveforever | Crassulaceae
|
| DUNE | Dudleya nesiotica (Moran) Moran | Santa Cruz Island liveforever | Crassulaceae
|
| DUNEM | Dudleya nevadensis (S. Wats.) Britt. & Rose ssp. minor (Rose) Abrams | Dudleya lanceolata | Crassulaceae
|
| DUNE2 | Dudleya nevadensis (S. Wats.) Britt. & Rose | Dudleya cymosa ssp. cymosa | Crassulaceae
|
| DUPA2 | Dudleya palmeri (S. Wats.) Britt. & Rose | Palmer's liveforever | Crassulaceae
|
| DUPA | Dudleya parva Rose & A. Davids. | Dudleya abramsii ssp. parva | Crassulaceae
|
| DUPUA2 | Dudleya pulverulenta (Nutt.) Britt. & Rose ssp. arizonica (Rose) Moran | chalk dudleya | Crassulaceae
|
| DUPUP | Dudleya pulverulenta (Nutt.) Britt. & Rose ssp. pulverulenta | chalk dudleya | Crassulaceae
|
| DUPUA | Dudleya pulverulenta (Nutt.) Britt. & Rose var. arizonica (Rose) Welsh | Dudleya pulverulenta ssp. arizonica | Crassulaceae
|
| DUPU | Dudleya pulverulenta (Nutt.) Britt. & Rose | chalk dudleya | Crassulaceae
|
| DURU | Dudleya rusbyi (Greene) Britt. & Rose | Graptopetalum rusbyi | Crassulaceae
|
| DUSAA | Dudleya saxosa (M.E. Jones) Britt. & Rose ssp. aloides (Rose) Moran | Panamint liveforever | Crassulaceae
|
| DUSAC | Dudleya saxosa (M.E. Jones) Britt. & Rose ssp. collomiae (Rose ex Morton) Moran | Dudleya collomiae | Crassulaceae
|
| DUSAS | Dudleya saxosa (M.E. Jones) Britt. & Rose ssp. saxosa | Panamint liveforever | Crassulaceae
|
| DUSA | Dudleya saxosa (M.E. Jones) Britt. & Rose | Panamint liveforever | Crassulaceae
|
| DUSE2 | Dudleya septentrionalis Rose | Dudleya farinosa | Crassulaceae
|
| DUSE | Dudleya setchellii (Jepson) Britt. & Rose | Santa Clara Valley liveforever | Crassulaceae
|
| DUST | Dudleya stolonifera Moran | Laguna Beach liveforever | Crassulaceae
|
| DUTR | Dudleya traskiae (Rose) Moran | Santa Barbara Island liveforever | Crassulaceae
|
| DUVA | Dudleya variegata (S. Wats.) Moran | variegated liveforever | Crassulaceae
|
| DUVE | Dudleya verityi K. Nakai | Verity's liveforever | Crassulaceae
|
| DUVIH | Dudleya virens (Rose) Moran ssp. hassei (Rose) Moran | bright green dudleya | Crassulaceae
|
| DUVII | Dudleya virens (Rose) Moran ssp. insularis (Rose) Moran | bright green dudleya | Crassulaceae
|
| DUVIV | Dudleya virens (Rose) Moran ssp. virens | bright green dudleya | Crassulaceae
|
| DUVI | Dudleya virens (Rose) Moran | bright green dudleya | Crassulaceae
|
| DUVI2 | Dudleya viscida (S. Wats.) Moran | sticky liveforever | Crassulaceae
|
| DUDLE | Dudleya Britt. & Rose | dudleya | Crassulaceae
|
| DUMA2 | Dufourea madreporiformis (Ach.) Ach. | Dactylina madreporiformis | Parmeliaceae
|
| DUGR2 | Dugaldia grandiflora Rydb. | Helenium bolanderi | Asteraceae
|
| DUHO | Dugaldia hoopesii (Gray) Rydb. | Hymenoxys hoopesii | Asteraceae
|
| DUHI2 | Duggena hirsuta (Jacq.) Britt. ex Britt. & Wilson | Gonzalagunia hirsuta | Rubiaceae
|
| DUAR3 | Dulichium arundinaceum (L.) Britt. | threeway sedge | Cyperaceae
|
| DULIC | Dulichium Pers. | dulichium | Cyperaceae
|
| DUHIH | Dumortiera hirsuta (Sw.) Nees ssp. hirsuta | | Marchantiaceae
|
| DUHIN | Dumortiera hirsuta (Sw.) Nees ssp. nepalensis (Taylor) R. M. Schust. | | Marchantiaceae
|
| DUHI4 | Dumortiera hirsuta (Sw.) Nees | | Marchantiaceae
|
| DUMOR2 | Dumortiera Nees | | Marchantiaceae
|
| DUAR4 | Dunalia arborescens (L.) Sleumer | Acnistus arborescens | Solanaceae
|
| DUFIP | Dupontia fisheri R. Br. ssp. psilosantha (Rupr.) Hult�n | Dupontia fisheri | Poaceae
|
| DUFIA | Dupontia fisheri R. Br. var. aristata Malte ex Polunin | Dupontia fisheri | Poaceae
|
| DUFI | Dupontia fisheri R. Br. | Fisher's tundragrass | Poaceae
|
| DUPS | Dupontia psilosantha (Rupr.) Griseb. | Dupontia fisheri | Poaceae
|
| DUPON | Dupontia R. Br. | tundragrass | Poaceae
|
| DUERA | Duranta erecta L. var. alba (Masters) Caro | Duranta erecta | Verbenaceae
|
| DUER | Duranta erecta L. | golden dewdrops | Verbenaceae
|
| DUREA | Duranta repens L. var. alba (Masters) Bailey | Duranta erecta | Verbenaceae
|
| DUREM | Duranta repens L. var. microphylla (Desf.) Moldenke | Duranta erecta | Verbenaceae
|
| DURE | Duranta repens L. | Duranta erecta | Verbenaceae
|
| DURAN | Duranta L. | duranta | Verbenaceae
|
| DUBI | Duravia bidwelliae (S. Wats.) Greene | Polygonum bidwelliae | Polygonaceae
|
| DUZI | Durio zibethinus Murray | durian | Bombacaceae
|
| DURIO | Durio Adanson | durio | Bombacaceae
|
| DUSI | Duschekia sinuata (Regel) Pouzar | Alnus viridis ssp. sinuata | Betulaceae
|
| DUVI3 | Duschekia viridis (Vill.) Opiz p.p. | Alnus viridis ssp. crispa | Betulaceae
|
| DYBR | Dyckia brevifolia Baker | sawblade | Bromeliaceae
|
| DYCKI | Dyckia J.H. Schultes ex J.A. & J.H. Schultes | dyckia | Bromeliaceae
|
| DYCO3 | Dyera costulata (Miq.) Hook. f. | jelutong | Apocynaceae
|
| DYERA | Dyera Hook. f. | dyera | Apocynaceae
|
| DYLU | Dypsis lutescens (H. Wendl.) Beentje & Dransf. | yellow butterfly palm | Arecaceae
|
| DYPSI | Dypsis Noronha ex Mart. | butterfly palm | Arecaceae
|
| DYAN | Dyschoriste angusta (Gray) Small | pineland snakeherb | Acanthaceae
|
| DYCR | Dyschoriste crenulata Kobuski | wavyleaf snakeherb | Acanthaceae
|
| DYDE | Dyschoriste decumbens (Gray) Kuntze | spreading snakeherb | Acanthaceae
|
| DYHU | Dyschoriste humistrata (Michx.) Kuntze | swamp snakeherb | Acanthaceae
|
| DYLI | Dyschoriste linearis (Torr. & Gray) Kuntze | polkadots | Acanthaceae
|
| DYOBA | Dyschoriste oblongifolia (Michx.) Kuntze var. angusta (Gray) R.W. Long | Dyschoriste angusta | Acanthaceae
|
| DYOB | Dyschoriste oblongifolia (Michx.) Kuntze | oblongleaf snakeherb | Acanthaceae
|
| DYSCH | Dyschoriste Nees | snakeherb | Acanthaceae
|
| DYTA2 | Dysodiopsis tagetoides (Torr. & Gray) Rydb. | false dogfennel | Asteraceae
|
| DYSOD | Dysodiopsis (Gray) Rydb. | dogfennel | Asteraceae
|
| DYDI | Dysodium divaricatum L.C. Rich. | Melampodium divaricatum | Asteraceae
|