| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| DIPO4 | Dichanthelium polyanthes (J.A. Schultes) Mohlenbrock | Dichanthelium sphaerocarpon var. isophyllum | Poaceae
|
| DIPO3 | Dichanthelium portoricense (Desv. ex Hamilton) B.F. Hansen & Wunderlin | Dichanthelium sabulorum var. thinium | Poaceae
|
| DIRA | Dichanthelium ravenelii (Scribn. & Merr.) Gould | Ravenel's rosette grass | Poaceae
|
| DISAP | Dichanthelium sabulorum (Lam.) Gould & C.A. Clark var. patulum (Scribn. & Merr.) Gould & C.A. Clark | hemlock rosette grass | Poaceae
|
| DISAT | Dichanthelium sabulorum (Lam.) Gould & C.A. Clark var. thinium (A.S. Hitchc. & Chase) Gould & C.A. Clark | hemlock rosette grass | Poaceae
|
| DISA5 | Dichanthelium sabulorum (Lam.) Gould & C.A. Clark | hemlock rosette grass | Poaceae
|
| DISC2 | Dichanthelium scabriusculum (Ell.) Gould & C.A. Clark | woolly rosette grass | Poaceae
|
| DISC4 | Dichanthelium �scoparioides (Ashe) Mohlenbrock (pro sp.) | Shasta panicgrass | Poaceae
|
| DISC3 | Dichanthelium scoparium (Lam.) Gould | velvet panicum | Poaceae
|
| DISPI | Dichanthelium sphaerocarpon (Ell.) Gould var. isophyllum (Scribn.) Gould & C.A. Clark | roundseed panicgrass | Poaceae
|
| DISPP | Dichanthelium sphaerocarpon (Ell.) Gould var. polyanthes (J.A. Schultes) Gould | Dichanthelium sphaerocarpon var. isophyllum | Poaceae
|
| DISPS3 | Dichanthelium sphaerocarpon (Ell.) Gould var. sphaerocarpon | roundseed panicgrass | Poaceae
|
| DISP2 | Dichanthelium sphaerocarpon (Ell.) Gould | roundseed panicgrass | Poaceae
|
| DISP4 | Dichanthelium spretum (J.A. Schultes) Freckmann | Eaton's rosette grass | Poaceae
|
| DISTG | Dichanthelium strigosum (Muhl. ex Ell.) Freckmann var. glabrescens (Griseb.) Freckmann | roughhair rosette grass | Poaceae
|
| DISTL | Dichanthelium strigosum (Muhl. ex Ell.) Freckmann var. leucoblepharis (Trin.) Freckmann | roughhair rosette grass | Poaceae
|
| DISTS | Dichanthelium strigosum (Muhl. ex Ell.) Freckmann var. strigosum | roughhair rosette grass | Poaceae
|
| DIST5 | Dichanthelium strigosum (Muhl. ex Ell.) Freckmann | roughhair rosette grass | Poaceae
|
| DIVIP | Dichanthelium villosissimum (Nash) Freckmann var. praecocius (A.S. Hitchc. & Chase) Freckmann | whitehair rosette grass | Poaceae
|
| DIVIP4 | Dichanthelium villosissimum (Nash) Freckmann var. pseudopubescens (Nash) Mohlenbrock | Dichanthelium villosissimum var. villosissimum | Poaceae
|
| DIVIV | Dichanthelium villosissimum (Nash) Freckmann var. villosissimum | whitehair rosette grass | Poaceae
|
| DIVI7 | Dichanthelium villosissimum (Nash) Freckmann | whitehair rosette grass | Poaceae
|
| DIWI5 | Dichanthelium wilcoxianum (Vasey) Freckmann | fall rosette grass | Poaceae
|
| DIWR3 | Dichanthelium wrightianum (Scribn.) Freckmann | Wright's rosette grass | Poaceae
|
| DIXA | Dichanthelium xanthophysum (Gray) Freckmann | slender rosette grass | Poaceae
|
| DIYA | Dichanthelium yadkinense (Ashe) Mohlenbrock | Dichanthelium dichotomum var. dichotomum | Poaceae
|
| DICHA2 | Dichanthelium (A.S. Hitchc. & Chase) Gould | rosette grass | Poaceae
|
| DIANA | Dichanthium annulatum (Forsskal) Stapf var. annulatum | Diaz bluestem | Poaceae
|
| DIANP | Dichanthium annulatum (Forsskal) Stapf var. papillosum (A. Rich.) de Wet & Harlan | medio bluestem | Poaceae
|
| DIAN | Dichanthium annulatum (Forsk.) Stapf | Kleberg's bluestem | Poaceae
|
| DIAR5 | Dichanthium aristatum (Poir.) C.E. Hubbard | Angleton bluestem | Poaceae
|
| DIIS5 | Dichanthium ischaemum (L.) Roberty | Bothriochloa ischaemum | Poaceae
|
| DIPA17 | Dichanthium papillosum (Hochst. ex A. Rich.) Stapf | Dichanthium annulatum var. papillosum | Poaceae
|
| DISE5 | Dichanthium sericeum (R. Br.) A. Camus | silky bluestem | Poaceae
|
| DITE10 | Dichanthium tenue (R. Br.) A. Camus | slender bluestem | Poaceae
|
| DICHA3 | Dichanthium Willem. | bluestem | Poaceae
|
| DICR6 | Dichelachne crinata (L. f.) Hook. f. | clovenfoot plumegrass | Poaceae
|
| DIMI9 | Dichelachne micrantha (Cav.) Domin | plumegrass | Poaceae
|
| DISC9 | Dichelachne sciurea (R. Br.) Hook. f. | Dichelachne micrantha | Poaceae
|
| DICHE | Dichelachne Endl. | plumegrass | Poaceae
|
| DICA15 | Dichelostemma californicum (Torr.) Wood | Dichelostemma volubile | Liliaceae
|
| DICAC5 | Dichelostemma capitatum (Benth.) Wood ssp. capitatum | bluedicks | Liliaceae
|
| DICAP | Dichelostemma capitatum (Benth.) Wood ssp. pauciflorum (Torr.) G. Keator | bluedicks | Liliaceae
|
| DICA14 | Dichelostemma capitatum (Benth.) Wood | bluedicks | Liliaceae
|
| DICO19 | Dichelostemma congestum (Sm.) Kunth | ookow | Liliaceae
|
| DIID | Dichelostemma ida-maia (Wood) Greene | firecracker flower | Liliaceae
|
| DILA18 | Dichelostemma lacuna-vernalis Lenz | Dichelostemma capitatum ssp. capitatum | Liliaceae
|
| DIMU5 | Dichelostemma multiflorum (Benth.) Heller | roundtooth snakelily | Liliaceae
|
| DIPUC | Dichelostemma pulchellum (Salisb.) Heller var. capitatum (Benth.) Reveal | Dichelostemma capitatum ssp. capitatum | Liliaceae
|
| DIPUP | Dichelostemma pulchellum (Salisb.) Heller var. pauciflorum (Torr.) Hoover | Dichelostemma capitatum ssp. pauciflorum | Liliaceae
|
| DIPU3 | Dichelostemma pulchellum (Salisb.) Heller | Dichelostemma capitatum ssp. capitatum | Liliaceae
|
| DIVE6 | Dichelostemma �venustum (Greene) Hoover (pro sp.) | | Liliaceae
|
| DIVO | Dichelostemma volubile (Kellogg) Heller | twining snakelily | Liliaceae
|
| DICHE2 | Dichelostemma Kunth | snakelily | Liliaceae
|
| DICA28 | Dichelyma capillaceum (With.) Myr. | dichelyma moss | Fontinalaceae
|
| DIFAU | Dichelyma falcatum (Hedw.) Myr. var. uncinatum (Mitt.) Lawt. | Dichelyma uncinatum | Fontinalaceae
|
| DIFA6 | Dichelyma falcatum (Hedw.) Myr. | sickle dichelyma moss | Fontinalaceae
|
| DIPA18 | Dichelyma pallescens Schimp. in B.S.G. | dichelyma moss | Fontinalaceae
|
| DIUN6 | Dichelyma uncinatum Mitt. | dichelyma moss | Fontinalaceae
|
| DICHE3 | Dichelyma Myr. | dichelyma moss | Fontinalaceae
|
| DIMA8 | Dichodon maximum (L.) A.& D. L�ve | Cerastium maximum | Caryophyllaceae
|
| DIVI11 | Dichodon viscidum (Bieb.) Holub | Cerastium dubium | Caryophyllaceae
|
| DIOL2 | Dichodontium olympicum Ren. & Card. | Olympic dichodontium moss | Dicranaceae
|
| DIPEF | Dichodontium pellucidum (Hedw.) Schimp. ssp. fagimontanum (Brid.) Kindb. | Dichodontium pellucidum | Dicranaceae
|
| DIPEF2 | Dichodontium pellucidum (Hedw.) Schimp. var. fagimontanum (Brid.) Schimp. | Dichodontium pellucidum | Dicranaceae
|
| DIPEF3 | Dichodontium pellucidum (Hedw.) Schimp. var. flavescens (With.) Moore | Dichodontium pellucidum | Dicranaceae
|
| DIPE7 | Dichodontium pellucidum (Hedw.) Schimp. | dichodontium moss | Dicranaceae
|
| DICHO2 | Dichodontium Schimp. | dichodontium moss | Dicranaceae
|
| DIAR2 | Dichondra argentea Humb. & Bonpl. ex Willd. | silver ponysfoot | Convolvulaceae
|
| DIBR | Dichondra brachypoda Woot. & Standl. | New Mexico ponysfoot | Convolvulaceae
|
| DICA3 | Dichondra carolinensis Michx. | Carolina ponysfoot | Convolvulaceae
|
| DIDO2 | Dichondra donnelliana Tharp & M.C. Johnston | California ponysfoot | Convolvulaceae
|
| DIMI | Dichondra micrantha Urban | Asian ponysfoot | Convolvulaceae
|
| DIOC2 | Dichondra occidentalis House | western ponysfoot | Convolvulaceae
|
| DIRE2 | Dichondra recurvata Tharp & M.C. Johnston | oakwoods ponysfoot | Convolvulaceae
|
| DIREC | Dichondra repens J.R. Forst. var. carolinensis (Michx.) Choisy | Dichondra carolinensis | Convolvulaceae
|
| DIRES | Dichondra repens J.R. Forst. var. sericea (Sw.) Choisy | Dichondra sericea | Convolvulaceae
|
| DIRE3 | Dichondra repens auct. non J.R. & G. Forst. | Dichondra micrantha | Convolvulaceae
|
| DISE8 | Dichondra sericea Sw. | silverleaf ponysfoot | Convolvulaceae
|
| DICHO | Dichondra J.R. & G. Forst. | ponysfoot | Convolvulaceae
|
| DICI3 | Dichromanthus cinnabarinus (Llave & Lex.) Garay | Spiranthes cinnabarina | Orchidaceae
|
| DICI4 | Dichromena ciliata Vahl | Rhynchospora nervosa ssp. ciliata | Cyperaceae
|
| DICO | Dichromena colorata (L.) A.S. Hitchc. | Rhynchospora colorata | Cyperaceae
|
| DIFL3 | Dichromena floridensis Britt. ex Small | Rhynchospora floridensis | Cyperaceae
|
| DILA2 | Dichromena latifolia Baldw. ex Ell. | Rhynchospora latifolia | Cyperaceae
|
| DIMI7 | Dichromena microcephala Bertero ex Spreng. | Rhynchospora radicans ssp. microcephala | Cyperaceae
|
| DINI | Dichromena nivea (Boeckl.) Boeckl. ex Britt. | Rhynchospora nivea | Cyperaceae
|
| DIRA3 | Dichromena radicans Schlecht. & Cham. p.p. | Rhynchospora radicans ssp. microcephala | Cyperaceae
|
| DIMA13 | Dichrophyllum marginatum (Pursh) Klotzsch & Garcke | Euphorbia marginata | Euphorbiaceae
|
| DICI2 | Dichrostachys cinerea (L.) Wight & Arn. | aroma | Fabaceae
|
| DINU6 | Dichrostachys nutans Benth. | Dichrostachys cinerea | Fabaceae
|
| DICHR2 | Dichrostachys (DC.) Wight & Arn. | dichrostachys | Fabaceae
|
| DIOE | Dichylium oerstedianum (Klotzsch & Garcke) Britt. | Euphorbia oerstediana | Euphorbiaceae
|
| DIAN8 | Dicksonia antarctica Labill. | Australian treefern | Dicksoniaceae
|
| DIME5 | Dicksonia menziesii (Hook.) Hook. & Baker | Cibotium menziesii | Dicksoniaceae
|
| DISQ2 | Dicksonia squarrosa (G. Forst.) Sw. | hard treefern | Dicksoniaceae
|
| DICKS | Dicksonia L'H�r. | tree fern | Dicksoniaceae
|
| DIASV | Dicliptera assurgens (L.) Juss. var. vahliana (Nees) G. Maza | Dicliptera sexangularis | Acanthaceae
|
| DIAS3 | Dicliptera assurgens (L.) Juss. | Dicliptera sexangularis | Acanthaceae
|
| DIBRA | Dicliptera brachiata (Pursh) Spreng. var. attenuata Gray | Dicliptera brachiata | Acanthaceae
|
| DIBRG | Dicliptera brachiata (Pursh) Spreng. var. glandulosa (Scheele) Fern. | Dicliptera brachiata | Acanthaceae
|