| Acer hybr. | | a | |
| Acer spp. | | a | |
| Acer acuminatum Wall. ex D. Don | | a | |
| Acer album hort. ex G. Nicholson | Acer saccharinum L. | | |
| Acer amoenum Carriere | Acer palmatum Thunb. subsp. amoenum (Carriere) H. Hara | | |
| Acer amplum Rehder | Acer longipes Franch. ex Rehder subsp. amplum (Rehder) P. C. DeJong | | |
| Acer amplum Rehder var. tientaiense (C. K. Schneid.) Rehder | Acer longipes Franch. ex Rehder subsp. amplum (Rehder) P. C. DeJong | | i |
| Acer argutum Maxim. | | a | |
| Acer assyriacum Pojark. | Acer monspessulanum L. subsp. assyriacum (Pojark.) Rech. f. | | |
| Acer barbatum auct. | Acer saccharum Marshall subsp. floridanum (Chapm.) Desmarais | | |
| Acer barbinerve Maxim. | | a | |
| Acer betulifolium Maxim. | Acer stachyophyllum Hiern subsp. betulifolium (Maxim.) P. C. DeJong | | |
| Acer boscii Spach | | a | |
| Acer buergerianum Miq. | | a | |
| Acer buergerianum Miq. subsp. buergerianum | | a | i |
| Acer buergerianum Miq. subsp. formosanum (Hayata ex Koidz.) A. E. Murray & Lauener | | a | i |
| Acer buergerianum Miq. subsp. ningpoense (Hance) A. E. Murray | | a | i |
| Acer caesium Wall. ex Brandis | | a | |
| Acer caesium Wall. ex Brandis subsp. caesium | | a | i |
| Acer caesium Wall. ex Brandis subsp. giraldii (Pax) A. E. Murray | | a | i |
| Acer calcaratum Gagnep. | | a | |
| Acer californicum D. Dietr. | Acer negundo L. subsp. californicum (Torr. & A. Gray) Wesm. | | |
| Acer californicum D. Dietr. var. texanum (Pax) Pax | Acer negundo L. var. texanum Pax | | i |
| Acer campbellii Hook. f. & Thomson ex Hiern | | a | i |
| Acer campbellii Hook. f. & Thomson ex Hiern subsp. campbellii | | a | i |
| Acer campbellii Hook. f. & Thomson ex Hiern subsp. chekiangense (W. P. Fang) A. E. Murray | | a | i |
| Acer campbellii Hook. f. & Thomson ex Hiern subsp. flabellatum (Rehder) A. E. Murray | | a | i |
| Acer campbellii Hook. f. & Thomson ex Hiern subsp. sinense (Pax) P. C. DeJong | | a | i |
| Acer campbellii Hook. f. & Thomson ex Hiern subsp. wilsonii (Rehder) P. C. DeJong | | a | i |
| Acer campestre L. | | a | |
| Acer campestre L. f. pulverulentum (G. Kirchn.) Pax | Acer campestre L. | | i |
| Acer capillipes Maxim. | | a | |
| Acer cappadocicum Gled. | | a | |
| Acer cappadocicum Gled. f. rubrum (G. Kirchn.) Rehder | Acer cappadocicum Gled. | | i |
| Acer cappadocicum Gled. subsp. cappadocicum | | a | i |
| Acer cappadocicum Gled. subsp. divergens (K. Koch ex Pax) A. E. Murray | | a | i |
| Acer cappadocicum Gled. subsp. lobelii (Ten.) A. E. Murray | Acer lobelii Ten. | | i |
| Acer cappadocicum Gled. subsp. sinicum (Rehder) Hand.-Mazz. | | a | i |
| Acer cappadocicum Gled. subsp. sinicum (Rehder) Hand.-Mazz. var. tricaudatum (Rehder ex J. H. Veitch) Rehder | | a | i |
| Acer cappadocicum Gled. var. sinicum Rehder | Acer cappadocicum Gled. subsp. sinicum (Rehder) Hand.-Mazz. | | i |
| Acer carpinifolium Siebold & Zucc. | | a | |
| Acer catalpifolium Rehder | Acer longipes Franch. ex Rehder subsp. catalpifolium (Rehder) P. C. DeJong | | |
| Acer caudatifolium Hayata | | a | |
| Acer caudatum Wall. | | a | |
| Acer caudatum Wall. subsp. caudatum | | a | i |
| Acer caudatum Wall. subsp. multiserratum (Maxim.) A. E. Murray | | a | i |
| Acer caudatum Wall. subsp. ukurunduense (Trautv. & C. A. Mey.) A. E. Murray | Acer ukurunduense Trautv. & C. A. Mey. | | i |
| Acer caudatum Wall. var. multiserratum (Maxim.) Rehder | Acer caudatum Wall. subsp. multiserratum (Maxim.) A. E. Murray | | i |
| Acer caudatum Wall. var. prattii Rehder | Acer caudatum Wall. subsp. multiserratum (Maxim.) A. E. Murray | | i |
| Acer caudatum Wall. var. ukurunduense (Trautv. & C. A. Mey.) Rehder | Acer ukurunduense Trautv. & C. A. Mey. | | i |
| Acer ceriferum Rehder | | a | |
| Acer chapaense Gagnep. | | a | |
| Acer cinerascens Boiss. | Acer monspessulanum L. subsp. cinerascens (Boiss.) Yalt. | | |
| Acer circinatum Pursh | | a | |
| Acer cissifolium (Siebold & Zucc.) K. Koch | | a | |
| Acer cissifolium (Siebold & Zucc.) K. Koch subsp. henryi (Pax) A. E. Murray | Acer henryi Pax | | i |
| Acer cordatum Paxton | | a | |
| Acer cordatum Paxton var. subtrinervium (F. P. Metcalf) W. P. Fang | | a | i |
| Acer coriaceum Bosc ex Tausch | | a | |
| Acer crataegifolium Siebold & Zucc. | | a | |
| Acer creticum L. | Acer monspessulanum L. subsp. oksalianum Yalt. | | |
| Acer dasycarpum Ehrh. | Acer saccharinum L. | | |
| Acer davidii Franch. | | a | |
| Acer davidii Franch. subsp. davidii | | a | i |
| Acer davidii Franch. subsp. grosseri (Pax) P. C. DeJong | | a | i |
| Acer diabolicum Blume ex K. Koch | | a | |
| Acer diabolicum Blume ex K. Koch var. purpurascens (Franch. & Sav.) Rehder | Acer diabolicum Blume ex K. Koch | | i |
| Acer diffusum Greene | Acer glabrum Torr. var. diffusum (Greene) Smiley | | |
| Acer dimorphifolium F. P. Metcalf | Acer laevigatum Wall. var. dimorphifolium (F. P. Metcalf) W. P. Fang & W. K. Hu | | |
| Acer distylum Siebold & Zucc. | | a | |
| Acer divergens K. Koch ex Pax | Acer cappadocicum Gled. subsp. divergens (K. Koch ex Pax) A. E. Murray | | |
| Acer douglasii Hook. | Acer glabrum Torr. var. douglasii (Hook.) Dippel | | |
| Acer duplicatoserratum Hayata | | a | |
| Acer erianthum Schwer. | | a | |
| Acer fabri Hance | | a | |
| Acer fargesii Rehder | Acer fabri Hance | | |
| Acer firmianioides W. C. Cheng & W. P. Fang | Acer longipes Franch. ex Rehder subsp. firmianioides (W. C. Cheng & W. P. Fang) P. C. DeJong | | |
| Acer flabellatum Rehder | Acer campbellii Hook. f. & Thomson ex Hiern subsp. flabellatum (Rehder) A. E. Murray | | |
| Acer flabellatum Rehder var. yunnanense (Rehder) W. P. Fang | Acer campbellii Hook. f. & Thomson ex Hiern subsp. flabellatum (Rehder) A. E. Murray | | i |
| Acer floridanum (Chapm.) Pax | Acer saccharum Marshall subsp. floridanum (Chapm.) Desmarais | | |
| Acer floridanum (Chapm.) Pax var. acuminatum Trel. | Acer saccharum Marshall subsp. leucoderme (Small) Desmarais | | i |
| Acer forrestii Diels | Acer pectinatum Wall. ex G. Nicholson subsp. forrestii (Diels) A. E. Murray | | |
| Acer franchetii Pax | Acer sterculiaceum Wall. subsp. franchetii (Pax) A. E. Murray | | |
| Acer freemanii A. E. Murray | | a | |
| Acer fulvescens Rehder | Acer longipes Franch. ex Rehder subsp. longipes | | |
| Acer ginnala Maxim. | Acer tataricum L. subsp. ginnala (Maxim.) Wesm. | | |
| Acer ginnala Maxim. subsp. theiferum (W. P. Fang) W. P. Fang | Acer tataricum L. subsp. ginnala (Maxim.) Wesm. | | i |
| Acer ginnala Maxim. var. semenovii (Regel & Herder) Pax | Acer tataricum L. subsp. semenovii (Regel & Herder) A. E. Murray | | i |
| Acer giraldii Pax | Acer caesium Wall. ex Brandis subsp. giraldii (Pax) A. E. Murray | | |
| Acer glabrum Torr. | | a | |
| Acer glabrum Torr. subsp. diffusum (Greene) A. E. Murray | Acer glabrum Torr. var. diffusum (Greene) Smiley | | i |
| Acer glabrum Torr. subsp. douglasii (Hook.) Wesm. | Acer glabrum Torr. var. douglasii (Hook.) Dippel | | i |
| Acer glabrum Torr. subsp. neomexicanum (Greene) A. E. Murray | Acer glabrum Torr. var. glabrum | | i |
| Acer glabrum Torr. subsp. torreyi (Greene) A. E. Murray | Acer glabrum Torr. var. torreyi (Greene) Smiley | | i |
| Acer glabrum Torr. var. diffusum (Greene) Smiley | | a | i |
| Acer glabrum Torr. var. douglasii (Hook.) Dippel | | a | i |
| Acer glabrum Torr. var. glabrum | | a | i |
| Acer glabrum Torr. var. neomexicanum (Greene) Kearney & Peebles | Acer glabrum Torr. var. glabrum | | i |
| Acer glabrum Torr. var. torreyi (Greene) Smiley | | a | i |
| Acer grandidentatum Nutt. | | a | |
| Acer grandidentatum Nutt. var. sinuosum (Rehder) Little | | a | i |
| Acer griseum (Franch.) Pax | | a | |
| Acer grosseri Pax | Acer davidii Franch. subsp. grosseri (Pax) P. C. DeJong | | |
| Acer grosseri Pax var. hersii (Rehder) Rehder | Acer davidii Franch. subsp. grosseri (Pax) P. C. DeJong | | i |
| Acer heldreichii Orph. ex Boiss. | | a | |
| Acer heldreichii Orph. ex Boiss. subsp. heldreichii | | a | i |
| Acer heldreichii Orph. ex Boiss. subsp. trautvetteri (Medw.) A. E. Murray | | a | i |
| Acer henryi Pax | | a | |
| Acer hersii Rehder | Acer davidii Franch. subsp. grosseri (Pax) P. C. DeJong | | |
| Acer hillieri Lancaster | | a | |
| Acer hookeri Miq. | Acer sikkimense Miq. subsp. sikkimense | | |
| Acer hybridum Bosc | | a | |
| Acer hyrcanum Fisch. & C. A. Mey. | | a | |
| Acer hyrcanum Fisch. & C. A. Mey. subsp. hyrcanum | | a | i |
| Acer hyrcanum Fisch. & C. A. Mey. subsp. intermedium (Pancic) Bornm. | | a | i |
| Acer hyrcanum Fisch. & C. A. Mey. subsp. keckianum (Pax) Yalt. | | a | i |
| Acer hyrcanum Fisch. & C. A. Mey. subsp. reginae-amaliae (Orph. ex Boiss.) A. E. Murray | | a | i |
| Acer hyrcanum Fisch. & C. A. Mey. subsp. sphaerocarpum Yalt. | | a | i |
| Acer hyrcanum Fisch. & C. A. Mey. subsp. stevenii (Pojark.) A. E. Murray | | a | i |
| Acer hyrcanum Fisch. & C. A. Mey. subsp. tauricola (Boiss. & Blanche) Yalt. | | a | i |
| Acer ibericum M. Bieb. ex Willd. | Acer monspessulanum L. subsp. ibericum (M. Bieb. ex Willd.) Yalt. | | |
| Acer insigne Boiss. & Buhse | Acer velutinum Boiss. | | |
| Acer interius Britton | Acer negundo L. subsp. interius (Britton) A. Love & D. Love | | |
| Acer intermedium Pancic | Acer hyrcanum Fisch. & C. A. Mey. subsp. intermedium (Pancic) Bornm. | | |
| Acer italum Lauth var. keckianum Pax | Acer hyrcanum Fisch. & C. A. Mey. subsp. keckianum (Pax) Yalt. | | i |
| Acer itoanum (Hayata) H. W. Li | Acer oblongum Wall. ex DC. var. itoanum Hayata | | |
| Acer japonicum Thunb. | | a | |
| Acer japonicum Thunb. f. aureum Schwer. | Acer shirasawanum Koidz. | | i |
| Acer kawakamii var. taiton-montanum (Hayata) H. L. Li | Acer caudatifolium Hayata | | i |
| Acer komarovii Pojark. | Acer tschonoskii Maxim. subsp. koreanum A. E. Murray | | |
| Acer laetum C. A. Mey. | Acer cappadocicum Gled. subsp. cappadocicum | | |
| Acer laetum C. A. Mey. var. parviflorum Regel | Acer pictum Thunb. ex Murray subsp. mono (Maxim.) H. Ohashi | | i |
| Acer laetum C. A. Mey. var. tricaudatum Rehder ex J. H. Veitch | Acer cappadocicum Gled. subsp. sinicum (Rehder) Hand.-Mazz. var. tricaudatum (Rehder ex J. H. Veitch) Rehder | | i |
| Acer laevigatum Wall. | | a | |
| Acer laevigatum Wall. var. dimorphifolium (F. P. Metcalf) W. P. Fang & W. K. Hu | | a | i |
| Acer laevigatum Wall. var. laevigatum | | a | i |
| Acer laevigatum Wall. var. reticulatum (Champ.) Rehder | Acer fabri Hance | | i |
| Acer laevigatum Wall. var. salweenense (W. W. Sm.) Cowan ex W. P. Fang | | a | i |
| Acer laurinum Hassk. | | a | |
| Acer laxiflorum Pax | Acer pectinatum Wall. ex G. Nicholson subsp. laxiflorum (Pax) A. E. Murray | | |
| Acer leucoderme Small | Acer saccharum Marshall subsp. leucoderme (Small) Desmarais | | |
| Acer lobelii Ten. | | a | |
| Acer longipes Franch. ex Rehder | | a | |
| Acer longipes Franch. ex Rehder subsp. amplum (Rehder) P. C. DeJong | | a | i |
| Acer longipes Franch. ex Rehder subsp. catalpifolium (Rehder) P. C. DeJong | | a | i |
| Acer longipes Franch. ex Rehder subsp. firmianioides (W. C. Cheng & W. P. Fang) P. C. DeJong | | a | i |
| Acer longipes Franch. ex Rehder subsp. longipes | | a | i |
| Acer longipes Franch. ex Rehder var. tientaiense C. K. Schneid. | Acer longipes Franch. ex Rehder subsp. amplum (Rehder) P. C. DeJong | | i |
| Acer lucidum F. P. Metcalf | | a | |
| Acer macrophyllum Pursh | | a | |
| Acer mandshuricum Maxim. | | a | |
| Acer maximowiczianum Miq. | | a | |
| Acer maximowiczii Pax | Acer pectinatum Wall. ex G. Nicholson subsp. maximowiczii (Pax) A. E. Murray | | |
| Acer mayrii Schwer. | Acer pictum Thunb. ex Murray subsp. mayrii (Schwer.) H. Ohashi | | |
| Acer megalodum W. P. Fang & H. Y. Su | Acer barbinerve Maxim. | | |
| Acer metcalfii Rehder | Acer sikkimense Miq. subsp. metcalfii (Rehder) P. C. DeJong | | |
| Acer miaotaiense P. C. Tsoong | Acer miyabei Maxim. subsp. miaotaiense (P. C. Tsoong) A. E. Murray | | |
| Acer micranthum Siebold & Zucc. | | a | |
| Acer miyabei Maxim. | | a | |
| Acer miyabei Maxim. subsp. miaotaiense (P. C. Tsoong) A. E. Murray | | a | i |
| Acer miyabei Maxim. subsp. miyabei | | a | i |
| Acer mono Maxim. | Acer pictum Thunb. ex Murray subsp. mono (Maxim.) H. Ohashi | | |
| Acer mono Maxim. var. mayrii (Schwer.) S. Murai | Acer pictum Thunb. ex Murray subsp. mayrii (Schwer.) H. Ohashi | | i |
| Acer monspessulanum L. | | a | |
| Acer monspessulanum L. subsp. assyriacum (Pojark.) Rech. f. | | a | i |
| Acer monspessulanum L. subsp. cinerascens (Boiss.) Yalt. | | a | i |
| Acer monspessulanum L. subsp. ibericum (M. Bieb. ex Willd.) Yalt. | | a | i |
| Acer monspessulanum L. subsp. microphyllum (Boiss.) Bornm. | | a | i |
| Acer monspessulanum L. subsp. monspessulanum | | a | i |
| Acer monspessulanum L. subsp. oksalianum Yalt. | | a | i |
| Acer monspessulanum L. subsp. persicum (Pojark.) Rech. f. | | a | i |
| Acer monspessulanum L. subsp. turcomanicum (Pojark.) Rech. f. | | a | i |
| Acer monspessulanum L. var. ibericum (M. Bieb. ex Willd.) Tausch | Acer monspessulanum L. subsp. ibericum (M. Bieb. ex Willd.) Yalt. | | i |
| Acer monspessulanum L. var. microphyllum Boiss. | Acer monspessulanum L. subsp. microphyllum (Boiss.) Bornm. | | i |
| Acer morrisonense Hayata | Acer caudatifolium Hayata | | |
| Acer negundo L. | | a | |
| Acer negundo L. f. auratum Spath ex Schwer. | Acer negundo L. | | i |
| Acer negundo L. f. aureovariegatum (Wesm.) Spath ex Schwer. | Acer negundo L. | | i |
| Acer negundo L. subsp. californicum (Torr. & A. Gray) Wesm. | | a | i |
| Acer negundo L. subsp. interius (Britton) A. Love & D. Love | | a | i |
| Acer negundo L. subsp. mexicanum (DC.) Wesm. | | a | i |
| Acer negundo L. subsp. negundo | | a | i |
| Acer negundo L. var. californicum (Torr. & A. Gray) H. Jaeger | Acer negundo L. subsp. californicum (Torr. & A. Gray) Wesm. | | i |
| Acer negundo L. var. interius (Britton) Sarg. | Acer negundo L. subsp. interius (Britton) A. Love & D. Love | | i |
| Acer negundo L. var. texanum Pax | | a | i |
| Acer negundo L. var. variegatum Jacques | Acer negundo L. | | i |
| Acer negundo L. var. violaceum (G. Kirchn.) H. Jaeger | Acer negundo L. | | i |
| Acer neomexicanum Greene | Acer glabrum Torr. var. glabrum | | |
| Acer nigrum F. Michx. | Acer saccharum Marshall subsp. nigrum (F. Michx.) Desmarais | | |
| Acer nikoense (Miq.) Maxim. | Parthenocissus spp. | | |
| Acer nikoense (Miq.) Maxim. var. griseum Franch. | Acer griseum (Franch.) Pax | | i |
| Acer nikoense hort. | Acer maximowiczianum Miq. | | |
| Acer nipponicum H. Hara | | a | |
| Acer niveum Blume | Acer laurinum Hassk. | | |
| Acer oblongifolium hort., nom. inval. | Acer oblongum Wall. ex DC. | | |
| Acer oblongum Wall. ex DC. | | a | |
| Acer oblongum Wall. ex DC. var. biauritum W. W. Sm. | Acer paxii Franch. | | i |
| Acer oblongum Wall. ex DC. var. itoanum Hayata | | a | i |
| Acer obtusatum Waldst. & Kit. ex Willd. | Acer opalus Mill. subsp. obtusatum (Waldst. & Kit. ex Willd.) Gams | | |
| Acer okamotoanum Nakai | | a | |
| Acer oliverianum Pax | | a | |
| Acer oliverianum Pax subsp. formosanum (Koidz.) A. E. Murray | | a | i |
| Acer oliverianum Pax subsp. oliverianum | | a | i |
| Acer oliverianum Pax var. nakaharai Hayata | Acer oliverianum Pax subsp. formosanum (Koidz.) A. E. Murray | | i |
| Acer opalus Mill. | | a | |
| Acer opalus Mill. subsp. obtusatum (Waldst. & Kit. ex Willd.) Gams | | a | i |
| Acer opalus Mill. subsp. opalus | | a | i |
| Acer opalus Mill. var. obtusatum (Waldst. & Kit. ex Willd.) Rchb. | Acer opalus Mill. subsp. obtusatum (Waldst. & Kit. ex Willd.) Gams | | i |
| Acer orientale auct. | Acer sempervirens L. | | |
| Acer orientale L. | Acer monspessulanum L. subsp. oksalianum Yalt. | | |
| Acer osmastonii Gamble | | a | |
| Acer palmatum Thunb. | | a | |
| Acer palmatum Thunb. f. sanguineum (Carriere) Schwer. | Acer palmatum Thunb. | | i |
| Acer palmatum Thunb. subsp. amoenum (Carriere) H. Hara | | a | i |
| Acer palmatum Thunb. subsp. matsumurae Koidz. | | a | i |
| Acer palmatum Thunb. subsp. palmatum | | a | i |
| Acer palmatum Thunb. var. atropurpureum Van Houtte | Acer palmatum Thunb. | | i |
| Acer palmatum Thunb. var. dissectum (Thunb.) Miq. | Acer palmatum Thunb. | | i |
| Acer palmatum Thunb. var. matsumurae (Koidz.) Makino | Acer palmatum Thunb. subsp. matsumurae Koidz. | | i |
| Acer papilio King | Acer caudatum Wall. subsp. caudatum | | |
| Acer pauciflorum W. P. Fang | | a | |
| Acer paxii Franch. | | a | |
| Acer pectinatum Wall. ex G. Nicholson | | a | |
| Acer pectinatum Wall. ex G. Nicholson subsp. forrestii (Diels) A. E. Murray | | a | i |
| Acer pectinatum Wall. ex G. Nicholson subsp. laxiflorum (Pax) A. E. Murray | | a | i |
| Acer pectinatum Wall. ex G. Nicholson subsp. maximowiczii (Pax) A. E. Murray | | a | i |
| Acer pectinatum Wall. ex G. Nicholson subsp. pectinatum | | a | i |
| Acer pectinatum Wall. ex G. Nicholson subsp. taronense (Hand.-Mazz.) A. E. Murray | | a | i |
| Acer pensylvanicum L. | | a | |
| Acer pentaphyllum Diels | | a | |
| Acer pentapomicum J. L. Stewart | | a | |
| Acer persicum Pojark. | Acer monspessulanum L. subsp. persicum (Pojark.) Rech. f. | | |
| Acer pictum Thunb. | Kalopanax septemlobus (Thunb.) Koidz. | | |
| Acer pictum Thunb. ex Murray | | a | |
| Acer pictum Thunb. ex Murray subsp. mayrii (Schwer.) H. Ohashi | | a | i |
| Acer pictum Thunb. ex Murray subsp. mono (Maxim.) H. Ohashi | | a | i |
| Acer pictum Thunb. ex Murray subsp. pictum | | a | i |
| Acer pictum Thunb. ex Murray var. mono (Maxim.) Maxim. ex Franch. | Acer pictum Thunb. ex Murray subsp. mono (Maxim.) H. Ohashi | | i |
| Acer platanoides L. | | a | |
| Acer platanoides L. f. stollii Schwer. | Acer platanoides L. | | i |
| Acer platanoides L. subsp. platanoides | | a | i |
| Acer platanoides L. subsp. turkestanicum (Pax) P. C. DeJong | | a | i |
| Acer platanoides L. var. schwedleri K. Koch | Acer platanoides L. | | i |
| Acer polymorphum Siebold & Zucc. | Acer palmatum Thunb. subsp. palmatum | | |
| Acer pseudoplatanus L. | | a | |
| Acer pseudoplatanus L. f. corstorphinense Schwer. | Acer pseudoplatanus L. | | i |
| Acer pseudoplatanus L. var. purpurascens Van Houtte | Acer pseudoplatanus L. | | i |
| Acer pseudoplatanus L. var. tomentosum Tausch | Acer pseudoplatanus L. | | i |
| Acer pseudoplatanus L. var. villosum (C. Presl & J. Presl) Parl. | Acer pseudoplatanus L. | | i |
| Acer pseudosieboldianum (Pax) Kom. | | a | |
| Acer pseudosieboldianum (Pax) Kom. subsp. pseudosieboldianum | | a | i |
| Acer pseudosieboldianum (Pax) Kom. subsp. takesimense (Nakai) P. C. DeJong | | a | i |
| Acer pubipalmatum W. P. Fang | | a | |
| Acer purpurascens Franch. & Sav. | Acer diabolicum Blume ex K. Koch | | |
| Acer pycnanthum K. Koch | | a | |
| Acer quinquelobum K. Koch | Acer cappadocicum Gled. subsp. divergens (K. Koch ex Pax) A. E. Murray | | |
| Acer reginae-amaliae Orph. ex Boiss. | Acer hyrcanum Fisch. & C. A. Mey. subsp. reginae-amaliae (Orph. ex Boiss.) A. E. Murray | | |
| Acer robustum Pax | | a | |
| Acer rotundilobum Schwer. | | a | |
| Acer rubescens Hayata | | a | |
| Acer rubrum L. | | a | |
| Acer rubrum L. f. tomentosum (Tausch) Voss | Acer rubrum L. var. tomentosum (Du Tour) Tausch | | i |
| Acer rubrum L. var. tomentosum (Du Tour) Tausch | | a | i |
| Acer rufinerve Siebold & Zucc. | | a | |
| Acer rufinerve Siebold & Zucc. f. albolimbatum (Hook. f.) Schwer. | Acer rufinerve Siebold & Zucc. | | i |
| Acer rugelii Pax | Acer saccharum Marshall subsp. saccharum | | |
| Acer saccharinum L. | | a | |
| Acer saccharinum L. var. floridanum Chapm. | Acer saccharum Marshall subsp. floridanum (Chapm.) Desmarais | | i |
| Acer saccharinum Wangenh. | Acer saccharum Marshall | | |
| Acer saccharophorum K. Koch | Acer saccharum Marshall | | |
| Acer saccharum Marshall | | a | |
| Acer saccharum Marshall subsp. floridanum (Chapm.) Desmarais | | a | i |
| Acer saccharum Marshall subsp. grandidentatum (Nutt.) Desmarais | Acer grandidentatum Nutt. | | i |
| Acer saccharum Marshall subsp. grandidentatum (Nutt.) Desmarais var. sinuosum (Rehder) Sarg. | Acer grandidentatum Nutt. var. sinuosum (Rehder) Little | | i |
| Acer saccharum Marshall subsp. leucoderme (Small) Desmarais | | a | i |
| Acer saccharum Marshall subsp. nigrum (F. Michx.) Desmarais | | a | i |
| Acer saccharum Marshall subsp. ozarkense A. E. Murray | | a | i |
| Acer saccharum Marshall subsp. saccharum | | a | i |
| Acer saccharum Marshall subsp. skutchii (Rehder) A. E. Murray | | a | i |
| Acer saccharum Marshall var. rugelii (Pax) Rehder | Acer saccharum Marshall subsp. saccharum | | i |
| Acer saccharum Marshall var. schneckii Rehder | Acer saccharum Marshall subsp. saccharum | | i |
| Acer salweenense W. W. Sm. | Acer laevigatum Wall. var. salweenense (W. W. Sm.) Cowan ex W. P. Fang | | |
| Acer sanguineum Carriere | Acer palmatum Thunb. | | |
| Acer schwerinii Pax | | a | |
| Acer semenovii Regel & Herder | Acer tataricum L. subsp. semenovii (Regel & Herder) A. E. Murray | | |
| Acer sempervirens L. | | a | |
| Acer septemlobum Thunb. | Kalopanax septemlobus (Thunb.) Koidz. | | |
| Acer shirasawanum Koidz. | | a | |
| Acer sieboldianum Miq. | | a | |
| Acer sieboldianum Miq. var. microphyllum Maxim. | | a | i |
| Acer sikkimense Miq. | | a | |
| Acer sikkimense Miq. subsp. metcalfii (Rehder) P. C. DeJong | | a | i |
| Acer sikkimense Miq. subsp. sikkimense | | a | i |
| Acer sinense Pax | Acer campbellii Hook. f. & Thomson ex Hiern subsp. sinense (Pax) P. C. DeJong | | |
| Acer sino-oblongum F. P. Metcalf | | a | |
| Acer sinuosum Rehder | Acer grandidentatum Nutt. var. sinuosum (Rehder) Little | | |
| Acer skutchii Rehder | Acer saccharum Marshall subsp. skutchii (Rehder) A. E. Murray | | |
| Acer sosnowskyi Doluch. | | a | |
| Acer spicatum Lam. | | a | |
| Acer stachyophyllum Hiern | | a | |
| Acer stachyophyllum Hiern subsp. betulifolium (Maxim.) P. C. DeJong | | a | i |
| Acer stachyophyllum Hiern subsp. stachyophyllum | | a | i |
| Acer sterculiaceum Wall. | | a | |
| Acer sterculiaceum Wall. subsp. franchetii (Pax) A. E. Murray | | a | i |
| Acer sterculiaceum Wall. subsp. sterculiaceum | | a | i |
| Acer sterculiaceum Wall. subsp. thomsonii (Miq.) A. E. Murray | | a | i |
| Acer stevenii Pojark. | Acer hyrcanum Fisch. & C. A. Mey. subsp. stevenii (Pojark.) A. E. Murray | | |
| Acer striatum Du Roi | Acer pensylvanicum L. | | |
| Acer subtrinervium F. P. Metcalf | Acer cordatum Paxton var. subtrinervium (F. P. Metcalf) W. P. Fang | | |
| Acer sutchuenense Franch. | | a | |
| Acer taiton-montanum Hayata | Acer caudatifolium Hayata | | |
| Acer takeshimense Nakai | Acer pseudosieboldianum (Pax) Kom. subsp. takesimense (Nakai) P. C. DeJong | | |
| Acer taronense Hand.-Mazz. | Acer pectinatum Wall. ex G. Nicholson subsp. taronense (Hand.-Mazz.) A. E. Murray | | |
| Acer tataricum L. | | a | |
| Acer tataricum L. subsp. aidzuense (Franch.) P. C. DeJong | | a | i |
| Acer tataricum L. subsp. ginnala (Maxim.) Wesm. | | a | i |
| Acer tataricum L. subsp. semenovii (Regel & Herder) A. E. Murray | | a | i |
| Acer tataricum L. subsp. tataricum | | a | i |
| Acer tataricum L. subsp. tataricum var. torminaloides Pax | | a | i |
| Acer tataricum L. var. aidzuense Franch. | Acer tataricum L. subsp. aidzuense (Franch.) P. C. DeJong | | i |
| Acer tauricola Boiss. & Blanche | Acer hyrcanum Fisch. & C. A. Mey. subsp. tauricola (Boiss. & Blanche) Yalt. | | |
| Acer tegmentosum Maxim. | | a | |
| Acer tegmentosum Maxim. subsp. grosseri (Pax) A. E. Murray | Acer davidii Franch. subsp. grosseri (Pax) P. C. DeJong | | i |
| Acer tetramerum Pax | Acer stachyophyllum Hiern subsp. stachyophyllum | | |
| Acer tetramerum Pax var. betulifolium (Maxim.) Rehder | Acer stachyophyllum Hiern subsp. betulifolium (Maxim.) P. C. DeJong | | i |
| Acer tetramerum Pax var. tiliifolium Rehder | Acer stachyophyllum Hiern subsp. stachyophyllum | | i |
| Acer theiferum W. P. Fang | Acer tataricum L. subsp. ginnala (Maxim.) Wesm. | | |
| Acer thomsonii Miq. | Acer sterculiaceum Wall. subsp. thomsonii (Miq.) A. E. Murray | | |
| Acer tomentosum Du Tour | Acer rubrum L. var. tomentosum (Du Tour) Tausch | | |
| Acer torreyi Greene | Acer glabrum Torr. var. torreyi (Greene) Smiley | | |
| Acer trautvetteri Medw. | Acer heldreichii Orph. ex Boiss. subsp. trautvetteri (Medw.) A. E. Murray | | |
| Acer trifidum auct. | Acer buergerianum Miq. | | |
| Acer trifidum Thunb. | Dendropanax trifidus (Thunb.) Makino ex H. Hara | | |
| Acer trifidum Thunb. var. formosanum Hayata ex Koidz. | Acer buergerianum Miq. subsp. formosanum (Hayata ex Koidz.) A. E. Murray & Lauener | | i |
| Acer trifidum Thunb. var. ningpoense Hance | Acer buergerianum Miq. subsp. ningpoense (Hance) A. E. Murray | | i |
| Acer triflorum Kom. | | a | |
| Acer truncatum Bunge | | a | |
| Acer truncatum Bunge subsp. mayrii (Schwer.) A. E. Murray | Acer pictum Thunb. ex Murray subsp. mayrii (Schwer.) H. Ohashi | | i |
| Acer truncatum Bunge subsp. mono (Maxim.) A. E. Murray | Acer pictum Thunb. ex Murray subsp. mono (Maxim.) H. Ohashi | | i |
| Acer tschonoskii Maxim. | | a | |
| Acer tschonoskii Maxim. subsp. koreanum A. E. Murray | | a | i |
| Acer tschonoskii Maxim. subsp. tschonoskii | | a | i |
| Acer tschonoskii Maxim. var. rubripes Kom. | Acer tschonoskii Maxim. subsp. koreanum A. E. Murray | | i |
| Acer tsinglingense W. P. Fang & Y. T. Hsieh | Acer sterculiaceum Wall. subsp. franchetii (Pax) A. E. Murray | | |
| Acer turcomanicum Pojark. | Acer monspessulanum L. subsp. turcomanicum (Pojark.) Rech. f. | | |
| Acer turkestanicum Pax | Acer platanoides L. subsp. turkestanicum (Pax) P. C. DeJong | | |
| Acer ukurunduense Trautv. & C. A. Mey. | | a | |
| Acer vanvolxemii Mast. | Acer velutinum Boiss. var. vanvolxemii (Mast.) Rehder | | |
| Acer veitchii Schwer. | Acer schwerinii Pax | | |
| Acer velutinum Boiss. | | a | |
| Acer velutinum Boiss. var. vanvolxemii (Mast.) Rehder | | a | i |
| Acer villosum Wall. | Acer sterculiaceum Wall. subsp. sterculiaceum | | |
| Acer wardii W. W. Sm. | | a | |
| Acer wilsonii Rehder | Acer campbellii Hook. f. & Thomson ex Hiern subsp. wilsonii (Rehder) P. C. DeJong | | |
| Acer wilsonii Rehder var. chekiangense W. P. Fang | Acer campbellii Hook. f. & Thomson ex Hiern subsp. chekiangense (W. P. Fang) A. E. Murray | | i |
| Acer wuyuanense W. P. Fang & Y. T. Wu | | a | |
| Acer zoeschense Pax | | a | |