| Arten: |
| Dioscorea abysmophila Maguire & Steyerm. |
| Dioscorea abyssinica Hochst. ex Kunth |
| Dioscorea acanthogene Rusby |
| Dioscorea acerifolia Phil. |
| Dioscorea acuminata Baker |
| Dioscorea adenantha Uline |
| Dioscorea aesculifolia R.Knuth |
| Dioscorea aguilarii Standl. & Steyerm. |
| Dioscorea alata L. |
| Dioscorea alatipes Burkill & H.Perrier |
| Dioscorea althaeoides R.Knuth |
| Dioscorea altissima Lam. |
| Dioscorea amaranthoides C.Presl |
| Dioscorea amazonum Mart. ex Griseb. |
| Dioscorea amazonum var. amazonum |
| Dioscorea amazonum var. klugii (R.Knuth) Ayala |
| Dioscorea amoena R.Knuth |
| Dioscorea analalavensis Jum. & H.Perrier |
| Dioscorea ancachsensis R.Knuth |
| Dioscorea andina Phil. |
| Dioscorea andromedusae O.Téllez |
| Dioscorea anomala Griseb. |
| Dioscorea antaly Jum. & H.Perrier |
| Dioscorea antucoana Uline ex R.Knuth |
| Dioscorea arachidna Prain & Burkill |
| Dioscorea araucana Phil. |
| Dioscorea arcuatinervis Hochr. |
| Dioscorea argyrogyna Uline ex R.Knuth |
| Dioscorea arifolia C.Presl |
| Dioscorea aristolochiifolia Poepp. |
| Dioscorea arnensis R. Knuth |
| Dioscorea asclepiadea Prain & Burkill |
| Dioscorea aspera Humb. & Bonpl. ex Willd. |
| Dioscorea aspersa Prain & Burkill |
| Dioscorea asperula Pedralli |
| Dioscorea asteriscus Burkill |
| Dioscorea atrescens R.Knuth |
| Dioscorea auriculata Poepp. |
| Dioscorea bahiensis R.Knuth |
| Dioscorea bako Wilkin |
| Dioscorea balcanica Košanin |
| Dioscorea bancana Prain & Burkill |
| Dioscorea banzhuana S.J.Pei & C.T.Ting |
| Dioscorea bartlettii C.V.Morton |
| Dioscorea basiclavicaulis Rizzini & A.Mattos |
| Dioscorea baya De Wild. |
| Dioscorea baya var. baya |
| Dioscorea beecheyi R.Knuth |
| Dioscorea belophylla (Prain) Voigt ex Haines |
| Dioscorea bemandry Jum. & H.Perrier |
| Dioscorea bemarivensis Jum. & H.Perrier |
| Dioscorea benthamii Prain & Burkill |
| Dioscorea berenicea McVaugh |
| Dioscorea bermejensis R.Knuth |
| Dioscorea bernoulliana Prain & Burkill |
| Dioscorea besseriana Kunth |
| Dioscorea beyrichii R.Knuth |
| Dioscorea bicolor Prain & Burkill |
| Dioscorea biformifolia S.J.Pei & C.T.Ting |
| Dioscorea biloba (Phil.) Caddick & Wilkin |
| Dioscorea biplicata R.Knuth |
| Dioscorea birmanica Prain & Burkill |
| Dioscorea birschelii Harms ex R.Knuth |
| Dioscorea blumei Prain & Burkill |
| Dioscorea bolivarensis Steyerm. |
| Dioscorea bonii Prain & Burkill |
| Dioscorea bosseri Haigh & Wilkin |
| Dioscorea brachybotrya Poepp. |
| Dioscorea brachystachya Phil. |
| Dioscorea bradei R.Knuth |
| Dioscorea brandisii Prain & Burkill |
| Dioscorea brevipetiolata Prain & Burkill |
| Dioscorea bridgesii Griseb. ex Kunth |
| Dioscorea brownii Schinz |
| Dioscorea bryoniifolia Poepp. |
| Dioscorea buchananii Benth. |
| Dioscorea bulbifera L. |
| Dioscorea bulbotricha Hand.-Mazz. |
| Dioscorea burchellii Baker |
| Dioscorea burkilliana J.Miège |
| Dioscorea cachipuertensis Ayala |
| Dioscorea calcicola Prain & Burkill |
| Dioscorea caldasensis R.Knuth |
| Dioscorea calderillensis R.Knuth |
| Dioscorea callacatensis R.Knuth |
| Dioscorea cambodiana Prain & Burkill |
| Dioscorea campanulata Uline ex R.Knuth |
| Dioscorea campestris Griseb. |
| Dioscorea campos-portoi R.Knuth |
| Dioscorea carionis Prain & Burkill |
| Dioscorea carpomaculata O.Téllez & B.G.Schub. |
| Dioscorea carpomaculata var. cinerea (Uline ex R.Knuth) O.Téllez & B.G.Schub. |
| Dioscorea castilloniana Hauman |
| Dioscorea catharinensis R.Knuth |
| Dioscorea caucasica Lipsky |
 |
| Dioscorea cayennensis Lam. |
| Dioscorea cayennensis subsp. cayennensis |
| Dioscorea cayennensis subsp. rotundata (Poir.) J.Miège |
| Dioscorea ceratandra Uline ex R.Knuth |
| Dioscorea chacoensis R.Knuth |
| Dioscorea chagllaensis R.Knuth |
| Dioscorea chancayensis R.Knuth |
| Dioscorea chaponensis R.Knuth |
| Dioscorea chiapasensis Matuda |
| Dioscorea chimborazensis R.Knuth |
| Dioscorea chingii Prain & Burkill |
| Dioscorea choriandra Uline ex R.Knuth |
| Dioscorea chouardii Gaussen |
| Dioscorea cienegensis R.Knuth |
| Dioscorea cinnamomifolia Hook. |
| Dioscorea cirrhosa Lour. |
| Dioscorea cissophylla Phil. |
| Dioscorea claessensii De Wild. |
| Dioscorea claussenii Uline ex R.Knuth |
| Dioscorea claytonii Ayala |
| Dioscorea cochleariapiculata De Wild. |
| Dioscorea collettii Hook.f. |
| Dioscorea collettii var. collettii |
| Dioscorea collettii var. hypoglauca (Palib.) S.J.Pei & C.T.Ting |
| Dioscorea communis (L.) Caddick & Wilkin |
| Dioscorea commutata R.Knuth |
| Dioscorea comorensis R.Knuth |
| Dioscorea composita Hemsl. |
| Dioscorea contracta R.Knuth |
| Dioscorea convolvulacea Cham. & Schltdl. |
| Dioscorea convolvulacea subsp. convolvulacea |
| Dioscorea convolvulacea subsp. grandifolia (Schltdl.) Uline ex R.Knuth |
| Dioscorea conzattii R.Knuth |
| Dioscorea cordifolia Laness. |
| Dioscorea coreana (Prain & Burkill) R.Knuth |
| Dioscorea coriacea Humb. & Bonpl. ex Willd. |
| Dioscorea coripatenis J.F.Macbr. |
| Dioscorea coripatensis J. Macbr. |
| Dioscorea coronata Hauman |
| Dioscorea cotinifolia Kunth |
| Dioscorea craibiana Prain & Burkill |
| Dioscorea crateriflora R.Knuth |
| Dioscorea crotalariifolia Uline |
| Dioscorea cruzensis R.Knuth |
| Dioscorea cubensis R.Knuth |
| Dioscorea cumingii Prain & Burkill |
| Dioscorea curitybensis R.Knuth |
| Dioscorea cuspidata Humb. & Bonpl. ex Willd. |
| Dioscorea cuyabensis R.Knuth |
| Dioscorea cyanisticta J.D.Sm. |
| Dioscorea cymosula Hemsl. |
| Dioscorea cyphocarpa C.B.Rob. ex Knuth |
| Dioscorea daunea Prain & Burkill |
| Dioscorea davidsei O.Téllez |
| Dioscorea de-mourae Uline ex R.Knuth |
| Dioscorea debilis Uline ex R.Knuth |
| Dioscorea decaryana H.Perrier |
| Dioscorea decipiens Hook.f. |
| Dioscorea decorticans C.Presl |
| Dioscorea deflexa Griseb. |
| Dioscorea delavayi Franch. |
| Dioscorea delicata R.Knuth |
| Dioscorea deltoidea Wall. ex Griseb. |
| Dioscorea dendrotricha Uline |
| Dioscorea densiflora Hemsl. |
| Dioscorea depauperata Prain & Burkill |
| Dioscorea diamantinensis R.Knuth |
| Dioscorea dicranandra Donn.Sm. |
| Dioscorea dielsii R.Knuth |
| Dioscorea dissimulans Prain & Burkill |
| Dioscorea divaricata Blanco |
| Dioscorea diversifolia Griseb. |
| Dioscorea dodecaneura Vell. |
| Dioscorea dregeana (Kunth) T.Durand & Schinz |
| Dioscorea duchassaingii R.Knuth |
| Dioscorea dugesii C.B.Rob. |
| Dioscorea dumetorum (Kunth) Pax |
| Dioscorea dumetosa Uline ex R.Knuth |
| Dioscorea ekmanii R.Knuth |
| Dioscorea elegans Ridl. ex Prain & Burkill |
| Dioscorea elephantipes (L'Hér.) Engl. |
| Dioscorea entomophila Hauman |
| Dioscorea epistephioides Taub. |
| Dioscorea escuintlensis Matuda |
| Dioscorea esculenta (Lour.) Burkill |
| Dioscorea esculenta var. esculenta |
| Dioscorea esquirolii Prain & Burkill |
| Dioscorea exalata C.T.Ting & M.C.Chang |
| Dioscorea fandra H.Perrier |
| Dioscorea fasciculocongesta (Sosa & B.G.Schub.) O.Téllez |
| Dioscorea fastigiata Gay |
| Dioscorea fendleri R.Knuth |
| Dioscorea ferreyrae Ayala |
| Dioscorea filiformis Blume |
| Dioscorea flabellifolia Prain & Burkill |
| Dioscorea flaccida R.Knuth |
| Dioscorea floribunda M.Martens & Galeotti |
| Dioscorea floridana Bartlett |
| Dioscorea fodinarum Kunth |
| Dioscorea fordii Prain & Burkill |
| Dioscorea formosana R.Knuth |
| Dioscorea fractiflexa R.Knuth |
| Dioscorea fuliginosa R.Knuth |
| Dioscorea furcata Griseb. |
| Dioscorea futschauensis Uline ex R.Knuth |
| Dioscorea galeottiana Kunth |
| Dioscorea galiiflora R.Knuth |
| Dioscorea gallegosi Matuda |
| Dioscorea garrettii Prain & Burkill |
| Dioscorea gaumeri R.Knuth |
| Dioscorea gentryi O.Téllez |
| Dioscorea gillettii Milne-Redh. |
| Dioscorea glabra Roxb. |
| Dioscorea glandulosa (Griseb.) Klotzsch ex Kunth |
| Dioscorea glandulosa var. calcensis (R.Knuth) Ayala |
| Dioscorea glandulosa var. glandulosa |
| Dioscorea glomerulata Hauman |
| Dioscorea gomez-pompae O.Téllez |
| Dioscorea gracilicaulis R.Knuth |
| Dioscorea gracilipes Prain & Burkill |
| Dioscorea gracilis Hook. ex Poepp. |
| Dioscorea gracillima Miq. |
| Dioscorea grandiflora Mart. ex Griseb. |
| Dioscorea grandis R.Knuth |
| Dioscorea grata Prain & Burkill |
| Dioscorea gribinguiensis Baudon |
| Dioscorea grisebachii Kunth |
| Dioscorea guerrerensis R.Knuth |
| Dioscorea guianensis R.Knuth |
| Dioscorea haenkeana C.Presl |
| Dioscorea hamiltonii Hook.f. |
| Dioscorea hassleriana Chodat |
| Dioscorea hastata Mill. |
| Dioscorea hastatissima Rusby |
| Dioscorea hastifolia Nees |
| Dioscorea hastiformis R.Knuth |
| Dioscorea haumanii Xifreda |
| Dioscorea havilandii Prain & Burkill |
| Dioscorea hebridensis R.Knuth |
| Dioscorea hemicrypta Burkill |
| Dioscorea hemsleyi Prain & Burkill |
| Dioscorea heptaneura Vell. |
| Dioscorea herbert-smithii Rusby |
| Dioscorea herzogii R.Knuth |
| Dioscorea heteropoda Baker |
| Dioscorea hexagona Baker |
| Dioscorea hieronymi Uline ex R.Knuth |
| Dioscorea hintonii R.Knuth |
| Dioscorea hirtiflora Benth. |
| Dioscorea hirtiflora subsp. hirtiflora |
| Dioscorea hirtiflora subsp. orientalis Milne-Redh. |
| Dioscorea hispida Dennst. |
| Dioscorea holmioidea Maury |
| Dioscorea hombuka H.Perrier |
| Dioscorea hondurensis R.Knuth |
| Dioscorea howardiana O.Téllez, B.G.Schub. & Geeta |
| Dioscorea humifusa Poepp. |
| Dioscorea humilis Bertero ex Colla |
| Dioscorea humilis subsp. humilis |
| Dioscorea hunzikeri Xifreda |
| Dioscorea igualamontana Matuda |
| Dioscorea incayensis R.Knuth |
| Dioscorea inopinata Prain & Burkill |
| Dioscorea insignis C.V.Morton & B.G.Schub. |
| Dioscorea intermedia Thwaites |
| Dioscorea ionophylla Uline ex R.Knuth |
| Dioscorea iquitosensis R.Knuth |
| Dioscorea irupanensis R.Knuth |
| Dioscorea itapirensis R.Knuth |
| Dioscorea itatiensis R.Knuth |
| Dioscorea jaliscana S.Watson |
| Dioscorea jamesonii R.Knuth |
| Dioscorea japonica Thunb. |
| Dioscorea japonica var. japonica |
| Dioscorea javariensis Ayala |
| Dioscorea juxtlahuacensis (O.Téllez & Dávila) Caddick & Wilkin |
| Dioscorea kalkapershadii Prain & Burkill |
| Dioscorea kamoonensis Kunth |
| Dioscorea karatana Wilkin |
| Dioscorea keduensis Burkill ex Backer |
| Dioscorea kerrii Prain & Burkill |
| Dioscorea killipii R.Knuth |
| Dioscorea kingii R.Knuth |
| Dioscorea kjellbergii R.Knuth |
| Dioscorea knuthiana De Wild. |
| Dioscorea koepperi Standl. |
| Dioscorea koyamae Jayas. |
| Dioscorea kratica Prain & Burkill |
| Dioscorea kuntzei Uline ex Kuntze |
| Dioscorea lacerdaei Griseb. |
| Dioscorea laevis Uline |
| Dioscorea lamprocaula Prain & Burkill |
| Dioscorea lanata Bail |
| Dioscorea larecajensis Uline ex R.Knuth |
| Dioscorea lasseriana Steyerm. |
| Dioscorea laurifolia Wall. ex Hook.f. |
| Dioscorea lawrancei R.Knuth |
| Dioscorea laxiflora Mart. ex Griseb. |
| Dioscorea lehmannii Uline |
| Dioscorea lepcharum Prain & Burkill |
| Dioscorea lepida C.V.Morton |
| Dioscorea leptobotrys Uline ex R.Knuth |
| Dioscorea liebmannii Uline |
| Dioscorea lijiangensis C.L.Long & H.Li |
| Dioscorea linearicordata Prain & Burkill |
| Dioscorea lisae Dorr & Stergios |
| Dioscorea listeri Prain & Burkill |
| Dioscorea litoralis Phil. |
| Dioscorea loefgrenii R.Knuth |
| Dioscorea loheri Prain & Burkill |
| Dioscorea longicuspis R.Knuth |
| Dioscorea longipes Phil. |
| Dioscorea longirhiza Caddick & Wilkin |
| Dioscorea longituba Uline |
| Dioscorea lundii Uline ex R.Knuth |
| Dioscorea luzonensis Schauer |
| Dioscorea macbrideana R.Knuth |
| Dioscorea macrantha Uline ex R.Knuth |
| Dioscorea macrothyrsa Uline |
| Dioscorea macvaughii B.G.Schub. |
| Dioscorea madecassa H.Perrier |
| Dioscorea madiunensis Prain & Burkill |
| Dioscorea maianthemoides Uline ex R.Knuth |
| Dioscorea mamillata Jum. & H.Perrier |
| Dioscorea mandonii Rusby |
| Dioscorea mangenotiana J.Miège |
| Dioscorea mantigueirensis R.Knuth |
| Dioscorea margarethia G.M.Barroso, E.F.Guim. & Sucre |
| Dioscorea marginata Griseb. |
| Dioscorea martensis R.Knuth |
| Dioscorea martiana Griseb. |
| Dioscorea martini Prain & Burkill |
| Dioscorea matagalpensis Uline |
| Dioscorea matudae O.Téllez & B.G.Schub. |
| Dioscorea mayottensis Wilkin |
| Dioscorea megacarpa Gleason |
| Dioscorea megalantha Griseb. |
| Dioscorea melanophyma Prain & Burkill |
| Dioscorea melastomatifolia Uline ex Prain |
| Dioscorea membranacea Pierre ex Prain & Burkill |
| Dioscorea menglaensis H.Li |
| Dioscorea meridensis Kunth |
| Dioscorea merrillii Prain & Burkill |
| Dioscorea mesoamericana O.Téllez & Mart.-Rodr. |
| Dioscorea mexicana Scheidw. |
 |
| Dioscorea microbotrya Griseb. |
| Dioscorea microcephala Uline |
| Dioscorea microura R.Knuth |
| Dioscorea militaris C.B.Rob. |
| Dioscorea mindanaensis R.Knuth |
| Dioscorea minima C.B.Rob. & Seaton |
| Dioscorea minutiflora Engl. |
| Dioscorea mitis C.V.Morton |
| Dioscorea mitoensis R.Knuth |
| Dioscorea modesta Phil. |
| Dioscorea mollis Kunth |
| Dioscorea monadelpha (Kunth) Griseb. |
| Dioscorea × monandra Hauman |
| Dioscorea morelosana (Uline) Matuda |
| Dioscorea moritziana (Kunth) R.Knuth |
| Dioscorea mosqueirensis R.Knuth |
| Dioscorea moultonii Prain & Burkill |
| Dioscorea moyobambensis R.Knuth |
| Dioscorea mucronata Uline ex R.Knuth |
| Dioscorea multiflora Mart. ex Griseb. |
| Dioscorea multiloba Kunth |
| Dioscorea multinervis Benth. |
| Dioscorea mundtii Baker |
| Dioscorea nako H.Perrier |
| Dioscorea namorokensis Wilkin |
| Dioscorea nana Poepp. |
| Dioscorea nanlaensis H.Li |
| Dioscorea natalensis R.Knuth |
| Dioscorea natalia Hammel |
| Dioscorea neblinensis Maguire & Steyerm. |
| Dioscorea nelsonii Uline ex R.Knuth |
| Dioscorea nematodes Uline ex R.Knuth |
| Dioscorea nervata R.Knuth |
| Dioscorea nervosa Phil. |
| Dioscorea nicolasensis R.Knuth |
| Dioscorea nieuwenhuisii Prain & Burkill |
| Dioscorea nipensis R.A.Howard |
| Dioscorea nipponica Makino |
| Dioscorea nitens Prain & Burkill |
| Dioscorea nuda R.Knuth |
| Dioscorea nummularia Lam. |
| Dioscorea nutans R.Knuth |
| Dioscorea oaxacensis Uline |
| Dioscorea obcuneata Hook.f. |
| Dioscorea oblonga Gleason |
| Dioscorea oblongifolia Rusby |
| Dioscorea obtusifolia Hook. & Arn. |
| Dioscorea olfersiana Klotzsch ex Griseb. |
| Dioscorea oligophylla Phil. |
| Dioscorea omiltemensis O.Téllez |
| Dioscorea opaca R.Knuth |
| Dioscorea oppositiflora Griseb. |
| Dioscorea oppositifolia L. |
| Dioscorea orbiculata Hook.f. |
| Dioscorea orbiculata var. tenuifolia (Ridl.) Thapyai |
| Dioscorea oreodoxa B.G.Schub. |
| Dioscorea organensis R.Knuth |
| Dioscorea orientalis (J.Thiébaut) Caddick & Wilkin |
| Dioscorea orizabensis Uline |
| Dioscorea orthogoneura Uline ex Hochr. |
| Dioscorea oryzetorum Prain & Burkill |
| Dioscorea ovalifolia R.Knuth |
| Dioscorea ovata Vell. |
| Dioscorea ovinala Baker |
| Dioscorea palawana Prain & Burkill |
| Dioscorea paleata Burkill |
| Dioscorea pallens Schltdl. |
| Dioscorea pallidinervia R.Knuth |
| Dioscorea palmeri R.Knuth |
| Dioscorea panamensis R.Knuth |
| Dioscorea panthaica Prain & Burkill |
| Dioscorea pantojensis R.Knuth |
| Dioscorea paradoxa Prain & Burkill |
| Dioscorea pavonii Uline ex R.Knuth |
| Dioscorea pedicellata Phil. |
| Dioscorea pencana Phil. |
| Dioscorea pendula Poepp. ex Kunth |
| Dioscorea pentaphylla L. |
| Dioscorea peperoides Prain & Burkill |
| Dioscorea peperoides var. peperoides |
| Dioscorea perdicum Taub. |
| Dioscorea perenensis R.Knuth |
| Dioscorea perpilosa H.Perrier |
| Dioscorea petelotii Prain & Burkill |
| Dioscorea philippiana Uline ex R.Knuth |
| Dioscorea piauhyensis R.Knuth |
| Dioscorea pierrei Prain & Burkill |
| Dioscorea pilcomayensis Hauman |
| Dioscorea pilgeriana R.Knuth |
| Dioscorea pilosiuscula Bertero ex Spreng. |
| Dioscorea pinedensis R.Knuth |
| Dioscorea piperifolia Humb. & Bonpl. ex Willd. |
| Dioscorea piscatorum Prain & Burkill |
| Dioscorea pittieri R.Knuth |
| Dioscorea planistipulosa Uline ex R.Knuth |
| Dioscorea plantaginifolia R.Knuth |
| Dioscorea platycarpa Prain & Burkill |
| Dioscorea platycolpota Uline ex B.L.Rob. |
| Dioscorea plumifera C.B.Rob. |
| Dioscorea pohlii Griseb. |
| Dioscorea pohlii var. luschnathiana (Kunth) Uline ex R.Knuth |
| Dioscorea poilanei Prain & Burkill |
| Dioscorea polyanthes (F.Phil.) Caddick & Wilkin |
| Dioscorea polyclados Hook.f. |
| Dioscorea polygonoides Humb. & Bonpl. ex Willd. |
| Dioscorea polystachya Turcz. |
| Dioscorea pomeroonensis R.Knuth |
| Dioscorea potarensis R.Knuth |
| Dioscorea praehensilis Benth. |
| Dioscorea prainiana R.Knuth |
| Dioscorea prazeri Prain & Burkill |
| Dioscorea preslii Steud. |
| Dioscorea preussii Pax |
| Dioscorea preussii subsp. hylophila (Harms) Wilkin |
| Dioscorea preussii subsp. preussii |
| Dioscorea pringlei C.B.Rob. |
| Dioscorea proteiformis H.Perrier |
| Dioscorea psammophila R.Knuth |
| Dioscorea pseudomacrocapsa G.M.Barroso, E.F.Guim. & Sucre |
| Dioscorea pseudonitens Prain & Burkill |
| Dioscorea pseudorajanioides R.Knuth |
| Dioscorea pseudotomentosa Prain & Burkill |
| Dioscorea pteropoda Boivin ex H.Perrier |
| Dioscorea pubera Blume |
| Dioscorea pubescens Poir. |
| Dioscorea pumicicola Uline |
| Dioscorea pumilio Griseb. |
| Dioscorea puncticulata R.Knuth |
| Dioscorea purdiei R.Knuth |
| Dioscorea putisensis R.Knuth |
| Dioscorea putumayensis R.Knuth |
| Dioscorea pynaertii De Wild. |
| Dioscorea pyrenaica Bubani & Bordère ex Gren. |
| Dioscorea pyrifolia Kunth |
| Dioscorea quartiniana A.Rich. |
| Dioscorea quinquelobata Thunb. |
| Dioscorea quispicanchensis R.Knuth |
| Dioscorea racemosa (Klotzsch) Uline |
| Dioscorea regnellii Uline ex R.Knuth |
| Dioscorea remota C.V.Morton |
| Dioscorea remotiflora Kunth |
| Dioscorea reticulata Gay |
| Dioscorea retusa Mast. |
| Dioscorea reversiflora Uline |
| Dioscorea ridleyi Prain & Burkill |
| Dioscorea riedelii R.Knuth |
| Dioscorea rigida R.Knuth |
| Dioscorea rimbachii R.Knuth |
| Dioscorea rockii Prain & Burkill |
| Dioscorea rosei R.Knuth |
| Dioscorea rumicoides Griseb. |
| Dioscorea rupicola Kunth |
| Dioscorea rusbyi Uline |
| Dioscorea sabarensis R.Knuth |
| Dioscorea sagittata Poir. |
| Dioscorea sagittifolia Pax |
| Dioscorea sagittifolia var. lecardii (De Wild.) Nkounkou |
| Dioscorea salicifolia Blume |
| Dioscorea salvadorensis Standl. |
| Dioscorea sambiranensis R.Knuth |
| Dioscorea sanchez-colini Matuda |
| Dioscorea sandiensis R.Knuth |
| Dioscorea sandwithii B.G.Schub. |
| Dioscorea sanpaulensis R.Knuth |
| Dioscorea sansibarensis Pax |
| Dioscorea santanderensis R.Knuth |
| Dioscorea santosensis R.Knuth |
| Dioscorea sarasinii Uline ex R.Knuth |
| Dioscorea saxatilis Poepp. |
| Dioscorea scabra Humb. & Bonpl. ex Willd. |
| Dioscorea schimperiana Hochst. ex Kunth |
| Dioscorea schubertiae Ayala |
| Dioscorea schunkei Ayala & T.Clayton |
| Dioscorea schwackei Uline ex R.Knuth |
| Dioscorea scortechinii Prain & Burkill |
| Dioscorea secunda R.Knuth |
| Dioscorea sellowiana Uline ex R.Knuth |
| Dioscorea semperflorens Uline |
| Dioscorea septemloba Thunb. |
| Dioscorea septemnervis Vell. |
| Dioscorea sericea R.Knuth |
| Dioscorea seriflora Jum. & H.Perrier |
| Dioscorea serpenticola Hoque & P.K.Mukh. |
| Dioscorea sessiliflora McVaugh |
| Dioscorea sexrimata Burkill |
| Dioscorea simulans Prain & Burkill |
| Dioscorea sincorensis R.Knuth |
| Dioscorea sinoparviflora C.T.Ting, M.G.Gilbert & Turland |
| Dioscorea sinuata Vell. |
| Dioscorea sitamiana Prain & Burkill |
| Dioscorea skottsbergii R.Knuth |
| Dioscorea smilacifolia De Wild. & T.Durand |
| Dioscorea sonlaensis R.Knuth |
| Dioscorea sororopana Steyerm. |
| Dioscorea soso Jum. & H.Perrier |
| Dioscorea soso var. trichopoda (Jum. & H.Perrier) Burkill & H.Perrier |
| Dioscorea spectabilis R.Knuth |
| Dioscorea spicata Roth |
| Dioscorea spiculiflora Hemsl. |
| Dioscorea spiculoides Matuda |
| Dioscorea spongiosa J.Q.Xi, M.Mizuno & W.L.Zhao |
| Dioscorea sprucei Uline ex R.Knuth |
| Dioscorea standleyi C.V.Morton |
| Dioscorea stegelmanniana R.Knuth |
| Dioscorea stellaris R.Knuth |
| Dioscorea stemonoides Prain & Burkill |
| Dioscorea stenocolpus Phil. |
| Dioscorea stenomeriflora Prain & Burkill |
| Dioscorea stenopetala Hauman |
| Dioscorea stenophylla Uline |
| Dioscorea sterilis O.Weber & Wilkin |
| Dioscorea stipulosa Uline ex R.Knuth |
| Dioscorea subcalva Prain & Burkill |
| Dioscorea subhastata Vell. |
| Dioscorea sublignosa R.Knuth |
| Dioscorea submigra R.Knuth |
| Dioscorea subtomentosa Miranda |
| Dioscorea sumatrana Prain & Burkill |
| Dioscorea sumiderensis B.G.Schub. & O.Téllez |
| Dioscorea suratensis R.Knuth |
| Dioscorea sylvatica Eckl. |
| Dioscorea synandra Uline |
| Dioscorea syringifolia (Kunth) Kunth & R.H.Schomb. ex R.Knuth |
| Dioscorea tabatae Hatus. ex Yamashita & M.N.Tamura |
| Dioscorea tacanensis Lundell |
| Dioscorea tamarisciflora Prain & Burkill |
| Dioscorea tamoidea Griseb. |
| Dioscorea tamshiyacuensis Ayala |
| Dioscorea tanalarum H.Perrier |
| Dioscorea tancitarensis Matuda |
| Dioscorea tarijensis R.Knuth |
| Dioscorea tarmensis R.Knuth |
| Dioscorea tauriglossum R.Knuth |
| Dioscorea tayacajensis R.Knuth |
| Dioscorea temascaltepecensis R.Knuth |
| Dioscorea tenebrosa C.V.Morton |
| Dioscorea tenella Phil. |
| Dioscorea tentaculigera Prain & Burkill |
| Dioscorea tenuipes Franch. & Sav. |
| Dioscorea tenuiphyllum R.Knuth |
| Dioscorea tenuis R.Knuth |
| Dioscorea tequendamensis R.Knuth |
| Dioscorea ternata Griseb. |
| Dioscorea therezopolensis Uline ex R.Knuth |
| Dioscorea togoensis R.Knuth |
| Dioscorea tokoro Makino ex Miyabe |
| Dioscorea toldosensis R.Knuth |
| Dioscorea tomentosa J.König ex Spreng. |
| Dioscorea torticaulis R.Knuth |
| Dioscorea trachyandra Griseb. |
| Dioscorea trachycarpa Kunth |
| Dioscorea traillii R.Knuth |
| Dioscorea transversa R.Br. |
| Dioscorea trichantha Baker |
| Dioscorea trichanthera Gleason |
| Dioscorea trifida L.f. |
| Dioscorea trifoliata Kunth |
| Dioscorea trifurcata Hauman |
| Dioscorea trilinguis Griseb. |
| Dioscorea trimenii Prain & Burkill |
| Dioscorea trinervia Roxb. ex Prain & Burkill |
| Dioscorea trisecta Griseb. |
| Dioscorea trollii R.Knuth |
| Dioscorea truncata Miq. |
| Dioscorea tsaratananensis H.Perrier |
| Dioscorea tubiperianthia Matuda |
| Dioscorea tubuliflora Uline ex R.Knuth |
| Dioscorea tubulosa Griseb. |
| Dioscorea uliginosa Phil. |
| Dioscorea ulinei Greenm. ex R.Knuth |
| Dioscorea undatiloba Baker |
| Dioscorea urceolata Uline |
| Dioscorea urophylla Hemsl. |
| Dioscorea uruapanensis Matuda |
| Dioscorea valdiviensis R.Knuth |
| Dioscorea vanvuurenii Prain & Burkill |
| Dioscorea variifolia Bertero |
| Dioscorea velutipes Prain & Burkill |
| Dioscorea vexans Prain & Burkill |
| Dioscorea vilis Kunth |
| Dioscorea villosa L. |
 |
| Dioscorea volckmannii Phil. |
| Dioscorea wallichii Hook.f. |
| Dioscorea warburgiana Uline ex Prain & Burkill |
| Dioscorea warmingii R.Knuth |
| Dioscorea wattii Prain & Burkill |
| Dioscorea weberbaueri R.Knuth |
| Dioscorea widgrenii R.Knuth |
| Dioscorea wightii Hook.f. |
| Dioscorea wittiana R.Knuth |
| Dioscorea wrightii Uline ex R.Knuth |
| Dioscorea xizangensis C.T.Ting |
| Dioscorea yunnanensis Prain & Burkill |
| Dioscorea zingiberensis C.H.Wright |