| Dactylis glomerata L. | map | images (1) |
| Dactyloctenium aegyptium (L.) Willd. | map | images (1) (2) (3) |
| Dalea candida Willd. | map | |
| Dalea pinnata (J.F. Gmel.) Barneby | map | images (1) (2) |
| Danthonia compressa Austin ex Peck | map | |
| Danthonia epilis Scribn. | map | |
| Danthonia sericea Nutt. | map | images (1) (2) (3) |
| Danthonia spicata (L.) Beauv. ex Roemer & J.A. Schultes | map | |
| Dasistoma macrophylla (Nutt.) Raf. | map | |
| Datura stramonium L. | map | |
| Datura wrightii Regel | map | |
| Daucus carota L. | map | images (1) (2) (3) |
| Daucus pusillus Michx. | map | |
| Decodon verticillatus (L.) Ell. | map | images (1) |
| Decumaria barbara L. | map | images (1) (2) |
| Delphinium carolinianum Walt. | map | |
| Delphinium tricorne Michx. | map | |
| Dennstaedtia punctilobula (Michx.) T. Moore | map | |
| Deparia acrostichoides (Sw.) M. Kato | map | |
| Deschampsia flexuosa (L.) Trin. | map | |
| Descurainia pinnata (Walt.) Britt. | map | images (1) (2) |
| Desmanthus illinoensis (Michx.) MacM. ex B.L. Robins. & Fern. | map | images (1) |
| Desmodium canescens (L.) DC. | map | |
| Desmodium ciliare (Muhl. ex Willd.) DC. | map | |
| Desmodium cuspidatum (Muhl. ex Willd.) DC. ex Loud. | map | |
| Desmodium fernaldii Schub. | map | |
| Desmodium floridanum Chapman | map | |
| Desmodium glabellum (Michx.) DC. | map | |
| Desmodium glutinosum (Muhl. ex Willd.) Wood | map | |
| Desmodium laevigatum (Nutt.) DC. | map | |
| Desmodium lineatum DC. | map | |
| Desmodium marilandicum (L.) DC. | map | |
| Desmodium nudiflorum (L.) DC. | map | images (1) |
| Desmodium nuttallii (Schindl.) Schub. | map | |
| Desmodium obtusum (Muhl. ex Willd.) DC. | map | |
| Desmodium paniculatum (L.) DC. | map | |
| Desmodium pauciflorum (Nutt.) DC. | map | |
| Desmodium perplexum Schub. | map | |
| Desmodium rotundifolium DC. | map | |
| Desmodium sessilifolium (Torr.) Torr. & Gray | map | |
| Desmodium strictum (Pursh) DC. | map | |
| Desmodium tenuifolium Torr. & Gray | map | |
| Desmodium tortuosum (Sw.) DC. | map | |
| Desmodium viridiflorum (L.) DC. | map | |
| Diamorpha smallii Britt. ex Small | map | images (1) (2) (3) |
| Dianthus armeria L. | map | |
| Dianthus barbatus L. | map | |
| Dicentra canadensis (Goldie) Walp. | map | |
| Dicentra cucullaria (L.) Bernh. | map | |
| Dicentra eximia (Ker-Gawl.) Torr. | map | |
| Dicerandra odoratissima Harper | map | |
| Dichondra carolinensis Michx. | map | images (1) (2) |
| Dicliptera brachiata (Pursh) Spreng. | map | images (1) (2) |
| Didiplis diandra (Nutt. ex DC.) Wood | map | |
| Diervilla sessilifolia Buckl. | map | |
| Digitaria bicornis (Lam.) Roemer & J.A. Schultes ex Loud. | map | |
| Digitaria ciliaris (Retz.) Koel | map | |
| Digitaria cognata (J.A. Schultes) Pilger | map | |
| Digitaria filiformis (L.) Koel. var. filiformis | map | |
| Digitaria ischaemum (Schreb.) Schreb. ex Muhl. | map | |
| Digitaria sanguinalis (Schreb.) (L.) Scop. | map | images (1) (2) (3) |
| Digitaria serotina (Walt.) Michx. | map | |
| Digitaria villosa (Walter) Pers. | map | |
| Digitaria violascens Link | map | |
| Diodia teres Walt. | map | images (1) (2) (3) |
| Diodia virginiana L. | map | images (1) |
| Dionaea muscipula Ellis | map | images (1) (2) |
| Dioscorea floridana Bartlett | map | |
| Dioscorea oppositifolia L. | map | images (1) (2) |
| Dioscorea villosa L. | map | images (1) |
| Diospyros virginiana L. | map | images (1) (2) (3) (4) |
| Diphasiastrum digitatum (Dill. ex A. Braun) Holub | map | images (1) (2) (3) |
| Diphasiastrum tristachyum (Pursh) Holub | map | |
| Diphylleia cymosa Michx. | map | |
| Diplazium pycnocarpon (Spreng.) Broun | map | |
| Dirca palustris L. | map | |
| Disporum lanuginosum (Michx.) Nicholson | map | images (1) (2) (3) |
| Distichlis spicata (L.) Greene | map | images (1) (2) (3) (4) (5) |
| Dodecatheon meadia L. | map | |
| Draba aprica Beadle | map | images (1) (2) (3) |
| Draba brachycarpa Nutt. ex Torr. & Gray | map | |
| Draba reptans (Lam.) Fern. | map | |
| Draba verna L. | map | |
| Drosera brevifolia Pursh | map | |
| Drosera capillaris Poir. | map | |
| Drosera intermedia Hayne | map | images (1) |
| Drosera rotundifolia L. | map | |
| Dryopteris carthusiana (Vill.) H.P. Fuchs | map | |
| Dryopteris celsa (Wm. Palmer) Knowlt. | map | |
| Dryopteris goldiana (Hook ex Goldie) Gray | map | |
| Dryopteris intermedia (Muhl. ex Willd.) Gray | map | |
| Dryopteris ludoviciana (Kunze) Small | map | |
| Dryopteris marginalis (L.) Gray | map | |
| Dryopteris x australis (Wherry) Small | map | |
| Duchesnea indica (Andr.) Focke | map | images (1) (2) |
| Dulichium arundinaceum (L.) Britt. | map | images (1) (2) (3) |
| Dyschoriste humistrata (Michx.) Kuntze | map | |
| Dyschoriste oblongifolia (Michx.) Kuntze | map | |