| Geranium absinthoides (Willd.) Poir. | Erodium absinthoides Willd. |
| Geranium acaule L. | Erodium acaule (L.) Bech. & Thell. |
| Geranium acaule Willd. ex Kunth | Geranium humboldtii Spreng. |
| Geranium aconitifolium L'Hér. | Geranium rivulare Vill. |
| Geranium acutilobum Coincy | Geranium collinum Stephan ex Willd. |
| Geranium adulterinum (L’Hér.) Thunb. | Pelargonium semitrilobum Jacq. |
| Geranium africanum Cav. | Pelargonium odoratissimum (L.) L‘Hér. sect. Reniformia |
| Geranium albidum Rydb. | Geranium wislizeni S.Watson |
| Geranium album R.Knuth | Geranium rupicola Wedd. |
| Geranium alchemilloides L. | Pelargonium alchemilloides (L.) L‘Hér. sect. Ciconium |
| Geranium alpestre Chaix | Geranium rivulare Vill. |
| Geranium alpinum Burm.f. | Erodium alpinum (Burm.f.) L‘Hér. |
| Geranium alternans (J.C.Wendl.) Poir. | Pelargonium alternans J.C.Wendl. sect. Otidia |
| Geranium amethystinum Ledeb. ex Nordm. | Geranium gymnocaulon DC. |
| Geranium amoenum R.Knuth | Geranium rupicola Wedd. |
| Geranium anemonifolium Jacq. | Pelargonium myrrhifolium (L.) L‘Hér. sect. Myrrhidium |
| Geranium anemonoides Thunb. | Monsonia speciosa L. |
| Geranium angelense Halfd.-Niels. | Geranium stramineum Triana & Planch. |
| Geranium angulatum Curtis | Geranium sylvaticum L. |
| Geranium angustilobum Z.M.Tan | Geranium refractum Edgew. & Hook.f. |
| Geranium apiifolium Andrews | Pelargonium petroselinifolium G.Don sect. Hoarea |
| Geranium appendiculatum L.f. | Pelargonium appendiculatum (L.f.) Willd. sect. Ligularia |
| Geranium arborescens Desf. | Erodium arborescens (Desf.) Willd. |
| Geranium arduinum L. | Pelargonium incarnatum (L.) Moench sect. Campylia |
| Geranium argenteum Bory & Chaub. | Geranium subcaulescens L‘Hér. ex DC. |
| Geranium argenteum cinereum (Cav.) Bonnier & Layens | Geranium cinereum Cav. |
| Geranium argentinum R.Knuth | Geranium core-core Steud. |
| Geranium armenum Boiss. | Geranium psilostemon Ledeb. |
| Geranium articulatum Cav. | Pelargonium articulatum (Cav.) Willd. sect. Ciconium |
| Geranium ascendens Z.M.Tan | Geranium moupinense Franch. |
| Geranium asphodeloides nemorosum (Ten.) Boiss. | Geranium asphodeloides Burm.f. |
| Geranium asphodeloides sintenisii (Freyn) P.H.Davis | Geranium sintenisii Freyn |
| Geranium asplenioides Desf. | Erodium asplenioides (Desf.) Willd. |
| Geranium astragalifolium Cav. | Pelargonium pinnatum (L.) L‘Hér. sect. Hoarea |
| Geranium atlanticum maurum (Pau) Font Quer | Geranium atlanticum Boiss. |
| Geranium atropurpureum A.Heller | Geranium caespitosum E.James |
| Geranium attenuilobum G.N.Jones & F.F.Jones | Geranium viscosissimum Fisch. & C.A.Mey. |
| Geranium auriculatum (Willd.) Poir. | Pelargonium longifolium (Burm.f.) Jacq. sect. Hoarea |
| Geranium auritum L. | Pelargonium auritum (L.) Willd. sect. Hoarea |
| Geranium backhousianum Regel | Geranium psilostemon Ledeb. |
| Geranium balkanum N.Taylor | Geranium macrorrhizum L. |
| Geranium bangii Hieron. | Geranium sessiliflorum Cav. |
| Geranium barbatum Andrews | Pelargonium aristatum (Sweet) G.Don sect. Hoarea |
| Geranium batangense Pax & K.Hoffm. | Geranium refractum Edgew. & Hook.f. |
| Geranium batrachioides Cav. | Geranium sylvaticum L. |
| Geranium betonicum Burm.f. | Pelargonium myrrhifolium (L.) L‘Hér. sect. Myrrhidium |
| Geranium bifolium Maxim. | Geranium dahuricum DC. |
| Geranium bolivarianum Dayton | Geranium sibbaldioides Benth. |
| Geranium bolivianum R.Knuth | Geranium fallax Steud. |
| Geranium brevipes L�Hér ex DC. | Geranium sessiliflorum Cav. |
| Geranium bubonifolium Andrews | Pelargonium bubonifolium (Andrews) Pers. sect. Hoarea |
| Geranium bullatum Jacq. | Pelargonium myrrhifolium (L.) L‘Hér. sect. Myrrhidium |
| Geranium caerulatum caroliprincipis (Pant.) Serb. & Savul. | Geranium sylvaticum L. |
| Geranium caespitosum albiflorum Cockerell | Geranium caespitosum E.James |
| Geranium caespitosum Walp. | Geranium sessiliflorum Cav. |
| Geranium calvescens Briq. | Geranium wislizeni S.Watson |
| Geranium canariense (Willd.) Poir. | Pelargonium candicans Spreng. |
| Geranium candidum Kom. | Geranium saxatile Kar. & Kir. |
| Geranium canescens Wedd. | Geranium raimondii R.Knuth |
| Geranium canum Rydb. | Geranium viscosissimum Fisch. & C.A.Mey. |
| Geranium capitatum L. | Pelargonium capitatum (L.) L‘Hér. sect. Pelargonium |
| Geranium caroliprincipis Pant. | Geranium sylvaticum L. |
| Geranium centaurodes (L�Hér. ex DC.) Kuntze | Pelargonium incrassatum (Andrews) Sims sect. Hoarea |
| Geranium chamaedryoides Cav. | Erodium reichardii (Murray) DC. |
| Geranium chamaense Pitt. | Geranium diffusum Kunth |
| Geranium chaparense R.Knuth | Geranium rupicola Wedd. |
| Geranium chelidonium Houtt. | Pelargonium chelidonium (Houtt.) DC. sect. Hoarea |
| Geranium chelikii Kit Tan & Yildiz | Geranium sintenisii Freyn |
| Geranium chimborazense R.Knuth | Geranium diffusum Kunth |
| Geranium ciliatum Willd. ex Spreng. | Geranium sibbaldioides Benth. |
| Geranium cinereum cazorlense (Heywood) Fern.Casas | Geranium cazorlense Heywood |
| Geranium cinereum dolomiticum (Rothm.) Malag. | Geranium dolomiticum Rothm. |
| Geranium cinereum nanum (Coss.) Maire | Geranium nanum Coss. |
| Geranium cinereum obtusilobum (Bornm.) Yeo | Geranium makmelicum Aedo |
| Geranium cinereum palmatipartitum Hausskn. ex R.Knuth, Pflanzenr. [H.G.A.Engler, ed.] IV, 53: 94 (1912) | Geranium palmatipartitum (Hausskn. ex R.Knuth) Aedo |
| Geranium cinereum ponticum P.H.Davis & J. Roberts, Notes Roy. Bot. Gard. Edinburgh 22: 23 (1955) | Geranium ponticum (P.H.Davis & J.Roberts ) Aedo |
| Geranium cinereum subacutum (Boiss.) P.H.Davis & J.Roberts | Geranium subacutum (Boiss.) Aedo |
| Geranium cinereum subargenteum (Lange) M.LaĂnz | Geranium subargenteum Lange ex Willk. & Lange |
| Geranium cinereum subcaulescens (Lâ€�HĂ©r. ex DC.) Hayek | Geranium subcaulescens L‘Hér. ex DC. |
| Geranium collinum freyeri (Griseb.) Graebn. | Geranium nodosum L. |
| Geranium collinum saxatile (Kar. & Kir.) Regel | Geranium saxatile Kar. & Kir. |
| Geranium columbianum R.Knuth | Geranium diffusum Kunth |
| Geranium commutatum Steud. | Geranium core-core Steud. |
| Geranium condensatum (Pers.) Poir. | Pelargonium incrassatum (Andrews) Sims sect. Hoarea |
| Geranium confertum Standl. | Geranium stramineum Triana & Planch. |
| Geranium coronillifolium Andrews | Pelargonium pinnatum (L.) L‘Hér. sect. Hoarea |
| Geranium coronopifolium (Jacq.) Andrews | Pelargonium coronopifolium Jacq. sect. Campylia |
| Geranium corsicum (Léman ex DC.) Poir. | Erodium corsicum Léman ex DC. |
| Geranium cortusifolium (L'Hér.) Andrews | Pelargonium cortusifolium L‘Hér. sect. Cortusina |
| Geranium cowenii Rydb. | Geranium caespitosum E.James |
| Geranium crassicaule (L'Hér.) Poir. | Pelargonium crassicaule L‘Hér. sect. Cortusina |
| Geranium crassum Poir. | Erodium crassifolium L‘Hér. |
| Geranium crinitum N.Terrac. | Geranium pyrenaicum Burm.f. |
| Geranium cristatum Steven | Geranium albanum M.Bieb. |
| Geranium cuchillense R.Knuth | Geranium rupicola Wedd. |
| Geranium cucullatum typicum R.Knuth | Geranium sibbaldioides Benth. |
| Geranium dahuricum baiheense Z.H.Lu & Y.C.Zhu | Geranium dahuricum DC. |
| Geranium davisianum Pesmen & Güner | Geranium sintenisii Freyn |
| Geranium delphinifolium R.Knuth | Geranium leucanthum Griseb. |
| Geranium depilatum (Sommier & Levier) Grossh. | Geranium pyrenaicum Burm.f. |
| Geranium dielsianum R.Knuth | Geranium ruizii Hieron. |
| Geranium diffusum sprucei Briq. | Geranium diffusum Kunth |
| Geranium dipetalum (L'Hér.) Poir. | Pelargonium dipetalum L‘Hér. sect. Hoarea |
| Geranium eglandulosum (ÄŚelak.) Dalla Torre | Geranium sylvaticum L. |
| Geranium elbursense Gilli | Geranium pyrenaicum Burm.f. |
| Geranium elegans Andrews | Pelargonium elegans (Andrews) Willd. sect. Campylia |
| Geranium ellipticum Thunb. | Pelargonium coronopifolium Jacq. sect. Campylia |
| Geranium emarginatum L.f. | Monsonia emarginata (L.f.) L‘Hér. |
| Geranium eremophilum Wooton & Standll. | Geranium caespitosum E.James |
| Geranium escalonense R.Knuth | Geranium rupicola Wedd. |
| Geranium exul Rech.f. & Riedl | Geranium collinum Stephan ex Willd. |
| Geranium fasciculatum Pančić | Geranium asphodeloides Burm.f. |
| Geranium fastigiatum (Fr.) Gilemann | Geranium sylvaticum L. |
| Geranium ferganense Bobrov | Geranium saxatile Kar. & Kir. |
| Geranium fiebrigianum R.Knuth | Geranium fallax Steud. |
| Geranium filipes Killip | Geranium fallax Steud. |
| Geranium fissifolium Andrews | Pelargonium fissifolium (Andrews) Pers. sect. Hoarea |
| Geranium floribundum Andrews | Pelargonium fissifolium (Andrews) Pers. sect. Hoarea |
| Geranium foetidum L. | Erodium foetidum (L.) L‘Hér. |
| Geranium forrestii Stapf | Geranium donianum Sweet |
| Geranium fremontii Torr. & A.Gray | Geranium caespitosum E.James |
| Geranium freyeri Griseb. | Geranium nodosum L. |
| Geranium furcatum Hanks | Geranium caespitosum E.James |
| Geranium fuscicaule R.Knuth | Geranium fallax Steud. |
| Geranium geoides Small | Geranium wislizeni S.Watson |
| Geranium gibbosum L. | Pelargonium gibbosum (L.) L‘Hér. sect. Polyactium |
| Geranium glandulosum Cav. | Erodium glandulosum (Cav.) Willd. |
| Geranium glaucoides Andrews | Pelargonium lanceolatum (Cav.) J.Kern. sect. Glaucophyllum |
| Geranium glaucum Burm.f. | Pelargonium lanceolatum (Cav.) J.Kern. sect. Glaucophyllum |
| Geranium gracile Engelm. | Geranium caespitosum E.James |
| Geranium grandiflorum Andrews | Pelargonium grandiflorum (Andrews) Willd. |
| Geranium grenvilleae Andrews | Pelargonium grenvilleae (Andrews) Harv. sect. Hoarea |
| Geranium guamanense Halfd.-Niels. | Geranium stramineum Triana & Planch. |
| Geranium guanacosense R.Knuth | Geranium azorelloides Sandwith |
| Geranium guttatum Desf. | Erodium guttatum (Desf.) Willd. |
| Geranium hakusanense Matsum. | Geranium soboliferum Kom. |
| Geranium harmsii R.Knuth | Geranium diffusum Kunth |
| Geranium heinrichsae R.Knuth | Geranium multipartitum Benth. |
| Geranium hemanthum Willd. ex Spreng. | Geranium asphodeloides Burm.f. |
| Geranium herrerae R.Knuth | Geranium core-core Steud. |
| Geranium herzogii R.Knuth | Geranium rupicola Wedd. |
| Geranium heterophyllum (Jacq.) Poir. | Pelargonium heterophyllum Jacq. sect. Hoarea |
| Geranium hidaense Makino | Geranium soboliferum Kom. |
| Geranium hirtum Burm.f. | Pelargonium hirtum (Burm.f.) Jacq. sect. Pelargonium |
| Geranium holm-nielsenii Halfd.-Niels. | Geranium diffusum Kunth |
| Geranium hookerianum Walp. | Geranium richardsonii Fisch. & Trautv. |
| Geranium humbertii Beauverd | Geranium subcaulescens L‘Hér. ex DC. |
| Geranium humifusum R.Knuth | Geranium collinum Stephan ex Willd. |
| Geranium hypoleucum Benth. | Geranium humboldtii Spreng. |
| Geranium ibericum album Lauman | Geranium ibericum Cav. |
| Geranium ibericum parviflorum Boiss. | Geranium sintenisii Freyn |
| Geranium ibericum platypetalum (Fisch. & C.A.Mey.) Boiss. | Geranium platypetalum Fisch. & C.A.Mey. |
| Geranium igualatense R.Knuth | Geranium sibbaldioides Benth. |
| Geranium imbaburae R.Knuth | Geranium diffusum Kunth |
| Geranium incarnatum L. | Pelargonium incarnatum (L.) Moench sect. Campylia |
| Geranium incrassatum Andrews | Pelargonium incrassatum (Andrews) Sims sect. Hoarea |
| Geranium intermedium E.James | Geranium caespitosum E.James |
| Geranium kai-montanum Honda | Geranium shikokianum Matsum. |
| Geranium killipianum R.Knuth | Geranium fallax Steud. |
| Geranium kiusianum Koidz. | Geranium soboliferum Kom. |
| Geranium knollii Britton ex Rchb. | Geranium sylvaticum L. |
| Geranium krylovii Tzvelev | Geranium sylvaticum L. |
| Geranium lambertii backhousianum (Regel) H.Hara | Geranium psilostemon Ledeb. |
| Geranium lancastriense Mill. | Geranium sanguineum L. |
| Geranium lanceolatum Cav. | Pelargonium lanceolatum (Cav.) J.Kern. sect. Glaucophyllum |
| Geranium lemanianum Briq. | Geranium sylvaticum L. |
| Geranium libanoticum (Boiss. & C.I.Blanche) Boiss. | Geranium libani P.H.Davis |
| Geranium linearilobum transversale (Kar. & Kir.) P.H.Davis | Geranium linearilobum DC. |
| Geranium lobatum Burm.f. | Pelargonium lobatum (Burm.f.) L‘Hér. sect. Polyactium |
| Geranium loloense H.St.John | Geranium richardsonii Fisch. & Trautv. |
| Geranium londesii Fisch. ex Link | Geranium collinum Stephan ex Willd. |
| Geranium longifolium Burm.f. | Pelargonium longifolium (Burm.f.) Jacq. sect. Hoarea |
| Geranium longipedatum St.-Lag. | Geranium collinum Stephan ex Willd. |
| Geranium longipes DC. | Geranium collinum Stephan ex Willd. |
| Geranium lugubre Salisb. | Geranium macrorrhizum L. |
| Geranium macrorrhizum dalmaticum Beck, Verh. K.K. Zool.-Bot. Ges. Wien 46: 266 (1896) | Geranium dalmaticum (Beck) Rech.f. |
| Geranium madrense M.E.Jones | Geranium trolliifolium Small |
| Geranium magellanicum multifoliosum R.Knuth | Geranium parodii I.M.Johnst. |
| Geranium magellanicum typicum R.Knuth | Geranium magellanicum Hook.f. |
| Geranium mairei H.Lév. | Geranium sinense R.Knuth |
| Geranium malopoides Desf. | Erodium guttatum (Desf.) Willd. |
| Geranium malpasense R.Knuth | Geranium sessiliflorum Cav. |
| Geranium mathewsii Briq. | Geranium ayavacense Willd. ex Kunth |
| Geranium maurum Pau | Geranium atlanticum Boiss. |
| Geranium meeboldii Briq. | Geranium saxatile Kar. & Kir. |
| Geranium melanandrum Franch. | Geranium refractum Edgew. & Hook.f. |
| Geranium melanopotamicum Speg. | Geranium core-core Steud. |
| Geranium minae Tineo | Geranium pyrenaicum Burm.f. |
| Geranium minimum R.Knuth | Geranium jaekelae J.F.Macbr. |
| Geranium minutum Ikonn. | Geranium collinum Stephan ex Willd. |
| Geranium minutum Ikonn. | Geranium sophiae Fed. |
| Geranium molle G.Gaertn. & al. | Geranium pyrenaicum Burm.f. |
| Geranium monsonia Thunb. | Monsonia speciosa L. |
| Geranium moorei Phil. | Geranium core-core Steud. |
| Geranium multicaule (Jacq.) Poir. | Pelargonium multicaule Jacq. sect. Myrrhidium |
| Geranium multifidum D.Don | Geranium donianum Sweet |
| Geranium multipartitum glabrescens R.Knuth | Geranium multipartitum Benth. |
| Geranium muscoideum R.Knuth | Geranium crassipes Hook. ex A.Gray |
| Geranium myrrhifolium L. | Pelargonium myrrhifolium (L.) L‘Hér. sect. Myrrhidium |
| Geranium nelsonii Rose | Geranium alpicola Loes. |
| Geranium nemorosum Ten. | Geranium asphodeloides Burm.f. |
| Geranium neopumilum Aedo & Muńoz Garm. | Geranium antisanae R.Knuth |
| Geranium nervifolium (Jacq.) Poir. | Pelargonium nervifolium Jacq. sect. Hoarea |
| Geranium nervosum Rydb. | Geranium viscosissimum Fisch. & C.A.Mey. |
| Geranium nodosum freyeri (Griseb.) Nyman | Geranium nodosum L. |
| Geranium ochsenii Phil. | Geranium core-core Steud. |
| Geranium odoratissimum L. | Pelargonium odoratissimum (L.) L‘Hér. sect. Reniformia |
| Geranium odoratum Thunb. | Pelargonium odoratissimum (L.) L‘Hér. sect. Reniformia |
| Geranium oenotherae L.f. | Pelargonium oenotherae (L.f.) Jacq. sect. Campylia |
| Geranium oreades Pančić | Geranium caeruleatum Schur |
| Geranium orientale Mill. | Geranium asphodeloides Burm.f. |
| Geranium orientali-tibeticum R.Knuth | Geranium pylzowianum Maxim. |
| Geranium ovale Burm.f. | Pelargonium ovale (Burm.f.) L‘Hér. sect. Campylia |
| Geranium oxyrhynchum (M.Bieb.) Poir. | Erodium oxyrhynchum M.Bieb. |
| Geranium paishanense Y.L.Chang | Geranium dahuricum DC. |
| Geranium palcaense R.Knuth | Geranium weddellii Briq. |
| Geranium pallens Andrews | Pelargonium stipulaceum (L.f.) Willd. sect. Ligularia |
| Geranium pallidiflorum R.Knuth | Geranium sessiliflorum Cav. |
| Geranium palustre endressii (J.Gay) Bonnier & Layens | Geranium endressii J.Gay |
| Geranium parryi (Engelm.) A.Heller | Geranium caespitosum E.James |
| Geranium partitum Willd. ex Knuth | Geranium ayavacense Willd. ex Kunth |
| Geranium parviflorum (Boiss.) Hand.-Mazz. | Geranium sintenisii Freyn |
| Geranium parvifolium (Jacq.) Poir. | Pelargonium nervifolium Jacq. sect. Hoarea |
| Geranium parvulum Scop. | Erodium reichardii (Murray) DC. |
| Geranium pattersonii Rydb. | Geranium caespitosum E.James |
| Geranium pentagynum Engelm. | Geranium caespitosum E.James |
| Geranium perenne Huds. | Geranium pyrenaicum Burm.f. |
| Geranium petraeum Gouan | Erodium foetidum (L.) L‘Hér. |
| Geranium pflanzii R.Knuth | Geranium sessiliflorum Cav. |
| Geranium pichinchense Aedo & Muńoz Garm. | Geranium diffusum Kunth |
| Geranium pilosum Andrews | Pelargonium petroselinifolium G.Don sect. Hoarea |
| Geranium pinnatifidum Burm.f. | Pelargonium carneum Jacq. sect. Hoarea |
| Geranium pinnatum L. | Pelargonium pinnatum (L.) L‘Hér. sect. Hoarea |
| Geranium piurense R.Knuth | Geranium ayavacense Willd. ex Kunth |
| Geranium platypetalum Franch. | Geranium sinense R.Knuth |
| Geranium potentilloides Bonpl. ex Wedd. | Geranium humboldtii Spreng. |
| Geranium pratense caerulatum (Schur) Graebn. | Geranium caeruleatum Schur |
| Geranium pratense sylvaticum (L.) Bonnier & Layens | Geranium sylvaticum L. |
| Geranium prostratum Cav. | Geranium sanguineum L. |
| Geranium pseudoaconitifolium Blatt. | Geranium collinum Stephan ex Willd. |
| Geranium pumilum Picard | Geranium pyrenaicum Burm.f. |
| Geranium pumilum R.Knuth | Geranium antisanae R.Knuth |
| Geranium punctatum Andrews | Pelargonium punctatum (Andrews) Willd. sect. Hoarea |
| Geranium punctatum Cav. ex Steud. | Pelargonium incarnatum (L.) Moench sect. Campylia |
| Geranium purpureocaeruleum Ledeb. | Geranium sylvaticum L. |
| Geranium pyrenaicum depilatum Sommier & Levier | Geranium pyrenaicum Burm.f. |
| Geranium pyrenaicum nanum (Coss.) A.Terracc. | Geranium nanum Coss. |
| Geranium pyrenaicum nemorosum (Ten.) DC. | Geranium asphodeloides Burm.f. |
| Geranium radiatum Andrews | Pelargonium radicatum Vent. sect. Hoarea |
| Geranium radiatum Small | Geranium cruceroense R.Knuth |
| Geranium ramosissimum Cav. | Pelargonium ramosissimum (Cav.) Willd. |
| Geranium ranunculifolium Schur ex Nyman | Geranium sylvaticum L. |
| Geranium rapaceum L. | Pelargonium rapaceum (L.) L‘Hér. sect. Hoarea |
| Geranium rapulum St.-Hill. & Naudin | Geranium core-core Steud. |
| Geranium razuhillcaense R.Knuth | Geranium sessiliflorum Cav. |
| Geranium reflexum Andrews | Pelargonium reflexum (Andrews) Pers. sect. Hoarea |
| Geranium refractoides Pax & K.Hoffm. | Geranium refractum Edgew. & Hook.f. |
| Geranium regelii Nevski | Geranium himalayense Klotzsch |
| Geranium reichardii Murray | Erodium reichardii (Murray) DC. |
| Geranium reniforme Andrews | Pelargonium reniforme (Andrews) Curtis |
| Geranium richardsonii intermedium (E.James) Kuntze | Geranium caespitosum E.James |
| Geranium robustipes R.Knuth | Geranium diffusum Kunth |
| Geranium romanum Burm.f. | Erodium acaule (L.) Bech. & Thell. |
| Geranium rosa DC. | Pelargonium capitatum (L.) L‘Hér. sect. Pelargonium |
| Geranium roseum Andrews | Pelargonium incrassatum (Andrews) Sims sect. Hoarea |
| Geranium rupestre Pourr. ex Cav. | Erodium rupestre (Pourr. ex Cav.) Guitt. |
| Geranium sanguineiforme Rouy & Fouc. | Geranium sanguineum L. |
| Geranium santacruzense R.Knuth | Geranium sessiliflorum Cav. |
| Geranium scissum R.Knuth | Geranium ayacuchense R.Knuth |
| Geranium selinum Andrews | Pelargonium rapaceum (L.) L‘Hér. sect. Hoarea |
| Geranium semitrilobum Poir. | Pelargonium semitrilobum Jacq. |
| Geranium sepaloroseum Rusby | Geranium rupicola Wedd. |
| Geranium sericeum microphyllum Wedd. | Geranium crassipes Hook. ex A.Gray |
| Geranium sessiliflorum acaule Reiche | Geranium humboldtii Spreng. |
| Geranium sessiliflorum albatum J.F.Macbr. | Geranium sessiliflorum Cav. |
| Geranium soboliferum hakusanense (Matsum.) Kitag. | Geranium soboliferum Kom. |
| Geranium sodiroanum R.Knuth | Geranium diffusum Kunth |
| Geranium speciosum (L.) Thunb. | Monsonia speciosa L. |
| Geranium spinosum Burm.f. | Sarcocaulon spinosum (Burm.f.) Kuntze |
| Geranium squamosum Phil. | Geranium core-core Steud. |
| Geranium staffordianum R.Knuth | Geranium sessiliflorum Cav. |
| Geranium stapfianum Hand.-Mazz. | Geranium donianum Sweet |
| Geranium stenorrhizum Stapf | Geranium donianum Sweet |
| Geranium stepporum P.H.Davis | Geranium tuberosum L. |
| Geranium stevenii (M.Bieb.) Poir. | Erodium stevenii M.Bieb. |
| Geranium stipulaceum L.f. | Pelargonium stipulaceum (L.f.) Willd. sect. Ligularia |
| Geranium striatum L. | Geranium versicolor L. |
| Geranium strigosius H.St.John | Geranium viscosissimum Fisch. & C.A.Mey. |
| Geranium subargenteum dolomiticum (Rothm.) M.LaĂnz | Geranium dolomiticum Rothm. |
| Geranium subcaulescens lazicum Woronow, Fl. Cauc. Crit. [Kusnetsov & al.] 3(7): 10 (1908) | Geranium lazicum (Woronow) Aedo |
| Geranium subcaulescens subacutum Boiss., Fl. Orient. ser. 1. 1: 872 (1867) | Geranium subacutum (Boiss.) Aedo |
| Geranium subsericeum R.Knuth. | Geranium core-core Steud. |
| Geranium superbum R.Knuth | Geranium rupicola Wedd. |
| Geranium sylvaticum caerulatum (Schur) D.A.Webb & I.K.Ferguson | Geranium caeruleatum Schur |
| Geranium sylvaticum rivulare (Vill.) Rouy | Geranium rivulare Vill. |
| Geranium tafiense Aedo & Muńoz Garm. | Geranium leucanthum Griseb. |
| Geranium tataricum (Willd.) Poir. | Erodium tataricum Willd. |
| Geranium tauricum Rupr. | Geranium asphodeloides Burm.f. |
| Geranium tenuifolium (L�Hér.) Poir. | Pelargonium hirtum (Burm.f.) Jacq. sect. Pelargonium |
| Geranium ternatum L.f. | Pelargonium ternatum (L.f.) Jacq. |
| Geranium tetragonum L.f. | Pelargonium tetragonum (L.f.) L‘Hér. sect. Chorisma |
| Geranium titicacaense R.Knuth | Geranium fallax Steud. |
| Geranium toquimense A.H.Holmgen & N.H.Holmgren | Geranium caespitosum E.James |
| Geranium tordylioides Desf. | Erodium tordylioides (Desf.) L‘Hér. ex DC. |
| Geranium totorense R.Knuth | Geranium fallax Steud. |
| Geranium tracyi Sandwith | Geranium multiceps Turcz. |
| Geranium transsylvanicum Schott & Kotschy ex R,Knuth | Geranium sylvaticum L. |
| Geranium transversale (Kar. & Kir.) Vved. | Geranium linearilobum DC. |
| Geranium tricolor (Curtis) J.Kern. | Pelargonium tricolor Curtis sect. Campylia |
| Geranium trifolium Cav. | Erodium trifolium (Cav.) Cav. |
| Geranium triphyllum (Jacq.) Poir. | Pelargonium triphyllum Jacq. sect. Hoarea |
| Geranium triste L. | Pelargonium triste (L.) L‘Hér. sect. Polyactium |
| Geranium tuberosum linearilobum (DC.) Kuntze | Geranium linearilobum DC. |
| Geranium tuberosum macrostylum (Boiss.) Graebn. | Geranium macrostylum Boiss. |
| Geranium tuberosum malviflorum (Boiss.) Malag. | Geranium malviflorum Boiss. & Reut. |
| Geranium tucumanum R.Knuth | Geranium sessiliflorum Cav. |
| Geranium umbrosum Waldst. & Kit. | Geranium pyrenaicum Burm.f. |
| Geranium varium L.Hér. | Geranium cinereum Cav. |
| Geranium venosum Pers. | Geranium sylvaticum L. |
| Geranium viscosissimum album Suksd. | Geranium viscosissimum Fisch. & C.A.Mey. |
| Geranium wakhanicum (Paulsen) Ikonn. | Geranium collinum Stephan ex Willd. |
| Geranium weberbauerianum R.Knuth | Geranium sessiliflorum Cav. |
| Geranium wiedemannii P.H.Davis | Geranium sintenisii Freyn |
| Geranium yesoense hakusanense (Matsum.) Makino | Geranium soboliferum Kom. |
| Geranium yoshiianum Koidz. | Geranium shikokianum Matsum. |