| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| QUAL | Quercus alba L. | white oak | Fagaceae
|
| QUAL4 | Quercus alexanderi Britt. | Quercus muehlenbergii | Fagaceae
|
| QUAL2 | Quercus �alvordiana Eastw. (pro sp.) | Alvord oak | Fagaceae
|
| QUAN2 | Quercus �anceps Palmer | Quercus palmeriana | Fagaceae
|
| QUAN3 | Quercus �andrewsii Sarg. | Quercus pauciloba | Fagaceae
|
| QUAN4 | Quercus annulata Buckl. | Quercus sinuata var. breviloba | Fagaceae
|
| QUAR | Quercus arizonica Sarg. | Arizona white oak | Fagaceae
|
| QUAR2 | Quercus arkansana Sarg. | Arkansas oak | Fagaceae
|
| QUAS4 | Quercus �asheana Little | Quercus ashei | Fagaceae
|
| QUAS3 | Quercus �ashei Trel. | | Fagaceae
|
| QUAS2 | Quercus ashei Sterrett | Quercus similis | Fagaceae
|
| QUAT | Quercus �atlantica Ashe (pro sp.) | | Fagaceae
|
| QUAU | Quercus austrina Small | bastard white oak | Fagaceae
|
| QUBE | Quercus �beadlei Trel. ex Palmer | | Fagaceae
|
| QUBE2 | Quercus �beaumontiana Sarg. | | Fagaceae
|
| QUBE3 | Quercus �bebbiana Schneid. | | Fagaceae
|
| QUBE8 | Quercus �beckyae Gaynor | | Fagaceae
|
| QUBE9 | Quercus �benderi Baenitz | | Fagaceae
|
| QUBE5 | Quercus berberidifolia Liebm. | scrub oak | Fagaceae
|
| QUBE4 | Quercus �bernardiensis W. Wolf (pro sp.) | | Fagaceae
|
| QUBI | Quercus bicolor Willd. | swamp white oak | Fagaceae
|
| QUBI2 | Quercus �bimundorum Palmer | | Fagaceae
|
| QUBL | Quercus �blufftonensis Trel. | | Fagaceae
|
| QUBOM | Quercus borealis Michx. f. var. maxima (Marsh.) Ashe | Quercus rubra var. rubra | Fagaceae
|
| QUBO | Quercus borealis Michx. f. | Quercus rubra var. ambigua | Fagaceae
|
| QUBO2 | Quercus boyntonii Beadle | Boynton sand post oak | Fagaceae
|
| QUBR2 | Quercus brantii Lindley | Brant's oak | Fagaceae
|
| QUBR4 | Quercus breviloba (Torr.) Sarg. | Quercus sinuata var. breviloba | Fagaceae
|
| QUBR3 | Quercus breweri Engelm. | Quercus garryana var. breweri | Fagaceae
|
| QUBR | Quercus �brittonii W.T. Davis (pro sp.) | | Fagaceae
|
| QUBU2 | Quercus buckleyi Nixon & Dorr | Buckley oak | Fagaceae
|
| QUBU3 | Quercus �burnetensis Little | | Fagaceae
|
| QUBU | Quercus �bushii Sarg. | | Fagaceae
|
| QUBY | Quercus �byarsii Sudworth | | Fagaceae
|
| QUCA | Quercus �caduca Trel. | | Fagaceae
|
| QUCA3 | Quercus �caesariensis Moldenke | | Fagaceae
|
| QUCA11 | Quercus californica (Torr.) Cooper | Quercus kelloggii | Fagaceae
|
| QUCA2 | Quercus �capesii W. Wolf | | Fagaceae
|
| QUCA8 | Quercus caput-rivuli Ashe | Quercus arkansana | Fagaceae
|
| QUCA7 | Quercus carmenensis C.H. Muller | Mexican oak | Fagaceae
|
| QUCA9 | Quercus �carolinensis Trel. | Quercus cravenensis | Fagaceae
|
| QUCA10 | Quercus catesbaei Michx. | Quercus laevis | Fagaceae
|
| QUCE | Quercus cerris L. | European turkey oak | Fagaceae
|
| QUCH | Quercus chapmanii Sarg. | Chapman oak | Fagaceae
|
| QUCH3 | Quercus �chasei McMinn, Babcock & Righter | Quercus ganderi | Fagaceae
|
| QUCH4 | Quercus chihuahuensis Trel. | Chihuahuan oak | Fagaceae
|
| QUCHC | Quercus chrysolepis Liebm. var. chrysolepis | canyon live oak | Fagaceae
|
| QUCHN | Quercus chrysolepis Liebm. var. nana (Jepson) Jepson | canyon live oak | Fagaceae
|
| QUCHP | Quercus chrysolepis Liebm. var. palmeri (Engelm.) Sarg. | Quercus dunnii | Fagaceae
|
| QUCH2 | Quercus chrysolepis Liebm. | canyon live oak | Fagaceae
|
| QUCI | Quercus cinerea Michx. | Quercus incana | Fagaceae
|
| QUCOC | Quercus coccinea Muenchh. var. coccinea | scarlet oak | Fagaceae
|
| QUCOT | Quercus coccinea Muenchh. var. tuberculata Sarg. | scarlet oak | Fagaceae
|
| QUCO2 | Quercus coccinea Muenchh. | scarlet oak | Fagaceae
|
| QUCO5 | Quercus �cocksii Sarg. | | Fagaceae
|
| QUCO4 | Quercus �columnaris Laughlin | | Fagaceae
|
| QUCO3 | Quercus �comptoniae Sarg. | | Fagaceae
|
| QUCO6 | Quercus conferta Kit. | Quercus frainetto | Fagaceae
|
| QUCO7 | Quercus cornelius-mulleri Nixon & Steele | Muller oak | Fagaceae
|
| QUCR | Quercus �cravenensis Little | | Fagaceae
|
| QUDE | Quercus �deamii Trel. | | Fagaceae
|
| QUDE2 | Quercus �demareei Ashe | | Fagaceae
|
| QUDE4 | Quercus dentata Thunb. | Daimyo oak | Fagaceae
|
| QUDE3 | Quercus depressipes Trel. | Davis Mountain oak | Fagaceae
|
| QUDI | Quercus �discreta Laughlin | | Fagaceae
|
| QUDI5 | Quercus diversicolor Trel. | Quercus rugosa | Fagaceae
|
| QUDI2 | Quercus �diversiloba Tharp ex A. Camus | | Fagaceae
|
| QUDO | Quercus douglasii Hook. & Arn. | blue oak | Fagaceae
|
| QUDR | Quercus drummondii Liebm. | Quercus margarettiae | Fagaceae
|
| QUDU6 | Quercus �dubia Ashe | Quercus rudkinii | Fagaceae
|
| QUDU5 | Quercus �dubia Trel. | Quercus filialis | Fagaceae
|
| QUDUA2 | Quercus dumosa Nutt. var. alvordiana (Eastw.) Jepson | Quercus alvordiana | Fagaceae
|
| QUDUD | Quercus dumosa Nutt. var. dumosa | coastal sage scrub oak | Fagaceae
|
| QUDUE | Quercus dumosa Nutt. var. elegantula Jepson | coastal sage scrub oak | Fagaceae
|
| QUDUK | Quercus dumosa Nutt. var. kinselae C.H. Muller | Quercus townei | Fagaceae
|
| QUDUM2 | Quercus dumosa Nutt. var. macdonaldii (Greene) Jepson | Quercus macdonaldii | Fagaceae
|
| QUDUT | Quercus dumosa Nutt. var. turbinella (Greene) Jepson | Quercus turbinella | Fagaceae
|
| QUDU | Quercus dumosa Nutt. | coastal sage scrub oak | Fagaceae
|
| QUDU3 | Quercus dunnii Kellogg | Palmer oak | Fagaceae
|
| QUDUB | Quercus durandii Buckl. var. breviloba (Torr.) Palmer | Quercus sinuata var. breviloba | Fagaceae
|
| QUDU2 | Quercus durandii Buckl. | Quercus sinuata var. sinuata | Fagaceae
|
| QUDUD2 | Quercus durata Jepson var. durata | leather oak | Fagaceae
|
| QUDUG | Quercus durata Jepson var. gabrielensis Nixon & C.H. Muller | leather oak | Fagaceae
|
| QUDU4 | Quercus durata Jepson | leather oak | Fagaceae
|
| QUEA | Quercus eastwoodiae Rydb. | Quercus gambelii var. gambelii | Fagaceae
|
| QUEG | Quercus �egglestonii Trel. | | Fagaceae
|
| QUEL | Quercus ellipsoidalis E.J. Hill | northern pin oak | Fagaceae
|
| QUEM | Quercus emoryi Torr. | Emory oak | Fagaceae
|
| QUEN | Quercus engelmannii Greene | Engelmann oak | Fagaceae
|
| QUEP | Quercus �eplingii C.H. Muller | | Fagaceae
|
| QUEX | Quercus �exacta Trel. | | Fagaceae
|
| QUFAL | Quercus falcata Michx. var. leucophylla (Ashe) Palmer & Steyermark | Quercus pagoda | Fagaceae
|
| QUFAP | Quercus falcata Michx. var. pagodifolia Ell. | Quercus pagoda | Fagaceae
|
| QUFAS | Quercus falcata Michx. var. subintegra Engelm. | Quercus subintegra | Fagaceae
|
| QUFAT | Quercus falcata Michx. var. triloba (Michx.) Nutt. | Quercus falcata | Fagaceae
|
| QUFA | Quercus falcata Michx. | southern red oak | Fagaceae
|
| QUFA4 | Quercus �fallax Palmer | Quercus deamii | Fagaceae
|
| QUFA2 | Quercus �faxonii Trel. | | Fagaceae
|
| QUFE5 | Quercus fendleri Liebm. | Quercus pauciloba | Fagaceae
|
| QUFE | Quercus �fernaldii Trel. | | Fagaceae
|
| QUFE2 | Quercus �fernowii Trel. | | Fagaceae
|