| Oxypetalum acerosum Malme | Accepted |  | TRO | 
	
		| Oxypetalum aequaliflorum E. Fourn. | Accepted |  | TRO | 
	
		| Oxypetalum albicans Schltr. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum albiflorum Schltr. | Synonym |  | TRO | 
	
		| Oxypetalum albiflorum Decne. | Accepted |  | TRO | 
	
		| Oxypetalum alpinum (Vell.) Fontella & E.A.Schwarz | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum alpinum var. pallidum (Hoehne) Fontella & E.A. Schwarz | Accepted |  | TRO | 
	
		| Oxypetalum ampliflorum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum andinum Phil. | Synonym |  | WCSP (in review) | 
	
		| Oxypetalum angustifolium Phil. | Synonym |  | TRO | 
	
		| Oxypetalum apoloense (Rusby) Dorr | Synonym |  | TRO | 
	
		| Oxypetalum appendiculatum Mart. | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum arachnantha Arechav. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum arachnoideum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum arenicola Hauman ex Lillo | Accepted |  | TRO | 
	
		| Oxypetalum argentinum Malme | Accepted |  | TRO | 
	
		| Oxypetalum arnottianum H. Buek | Accepted |  | TRO | 
	
		| Oxypetalum arnottianum var. brachystephanum Malme | Synonym |  | TRO | 
	
		| Oxypetalum arvense (Vell.) J.F. Macbr. | Accepted |  | TRO | 
	
		| Oxypetalum atropurpureum (Malme) T. Mey. | Synonym |  | TRO | 
	
		| Oxypetalum attenuatum (Rusby) Malme | Accepted |  | TRO | 
	
		| Oxypetalum aurantiacum Malme ex Chodat & Hassler | Accepted |  | TRO | 
	
		| Oxypetalum aureum Chodat | Synonym |  | TRO | 
	
		| Oxypetalum baetaeanum (Silveira) Malme | Synonym |  | TRO | 
	
		| Oxypetalum baetaeanum (Silveira) T. Mey. | Synonym |  | TRO | 
	
		| Oxypetalum balansae Malme | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum banksii Schult. | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum banksii subsp. corymbiferum (E. Fourn.) Fontella & C. Valente | Accepted |  | TRO | 
	
		| Oxypetalum barberoanum T. Mey. | Accepted |  | TRO | 
	
		| Oxypetalum bello-horizontinum Silveira | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum berteroanum Spreng. | Synonym |  | WCSP (in review) | 
	
		| Oxypetalum berteroi Spreng. ex Decne. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum boliviense Schltr. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum bornmuelleri Schltr. | Unresolved |  | TRO | 
	
		| Oxypetalum boudetii Fontella & Goes | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum brachystemma Malme | Accepted |  | TRO | 
	
		| Oxypetalum brachystephanum (Malme) Malme | Accepted |  | TRO | 
	
		| Oxypetalum brevipes Phil. | Synonym |  | TRO | 
	
		| Oxypetalum brunonis (Hook. & Arn.) Decne. | Synonym |  | TRO | 
	
		| Oxypetalum burchellii (E. Fourn.) Malme | Synonym |  | TRO | 
	
		| Oxypetalum campanulatum Hand.-Mazz. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum campestre (Vell.) Decne. | Accepted |  | TRO | 
	
		| Oxypetalum capitatum Mart. | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum capitatum Hook. & Arn. | Synonym |  | TRO | 
	
		| Oxypetalum ceratostemma Malme | Accepted |  | TRO | 
	
		| Oxypetalum charrua T. Mey. | Accepted |  | TRO | 
	
		| Oxypetalum chodatianum Malme | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum cipoense Silveira | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum clavatum Malme | Synonym |  | TRO | 
	
		| Oxypetalum clavigerum S. Moore | Synonym |  | TRO | 
	
		| Oxypetalum coalitum E. Fourn. | Accepted |  | TRO | 
	
		| Oxypetalum coccineum Griseb. | Synonym |  | TRO | 
	
		| Oxypetalum coeruleum (D. Don ex Sweet) Decne. | Accepted |  | TRO | 
	
		| Oxypetalum commersonianum (Decne.) Fontella & E.A. Schwarz | Accepted |  | TRO | 
	
		| Oxypetalum confertiflorum Decne. | Synonym |  | TRO | 
	
		| Oxypetalum confusum Malme | Accepted |  | TRO | 
	
		| Oxypetalum cordifolium (Vent.) Schltr. | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum coriaceum Decne. | Synonym |  | TRO | 
	
		| Oxypetalum corymbiferum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum costae Occhioni | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum crispum Wight ex Hook. & Arn. | Accepted |  | TRO | 
	
		| Oxypetalum curtiflorum Malme | Synonym |  | TRO | 
	
		| Oxypetalum curtiflorum var. indutum Malme | Synonym |  | TRO | 
	
		| Oxypetalum dactylostelma Goyder | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum decaisneanum T.Mey. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum deltoideum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum densiflorum Decne. | Synonym |  | TRO | 
	
		| Oxypetalum dentatum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum dombeyanum Decne. | Accepted |  | TRO | 
	
		| Oxypetalum dusenii Malme | Accepted |  | TRO | 
	
		| Oxypetalum echegarayi Hieron. | Synonym |  | TRO | 
	
		| Oxypetalum edwallii Schltr. | Unresolved |  | TRO | 
	
		| Oxypetalum ekblomii Malme | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum erectum Mart. | Synonym |  | TRO | 
	
		| Oxypetalum erianthum Decne. | Accepted |  | TRO | 
	
		| Oxypetalum erostre E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum filamentosum Malme | Accepted |  | TRO | 
	
		| Oxypetalum flavopurpureum Goyder & Fontella | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum floribundum Decne. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum foliosum Mart. | Accepted |  | TRO | 
	
		| Oxypetalum fontellae S. Caceres | Accepted |  | TRO | 
	
		| Oxypetalum fuscum Goyder & Fontella | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum glabrescens Malme | Accepted |  | TRO | 
	
		| Oxypetalum glabrum (Decne.) Malme | Synonym |  | TRO | 
	
		| Oxypetalum glabrum (Decne.) T. Mey. | Synonym |  | TRO | 
	
		| Oxypetalum glaziovianum Loes. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum glaziovii (E.Fourn.) Fontella & Marquete | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum glomeratum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum gothofreda Schult. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum gracile T. Mey. | Accepted |  | TRO | 
	
		| Oxypetalum graciliflorum E. Fourn. | Unresolved |  | TRO | 
	
		| Oxypetalum grandiflorum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum guaraniticum (Malme) Malme | Accepted |  | TRO | 
	
		| Oxypetalum guilleminianum Decne. | Synonym |  | TRO | 
	
		| Oxypetalum gyrophyllum Farinaccio & Mello-Silva | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum habrogynum Farinaccio | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum hasslerianum Chodat | Synonym |  | TRO | 
	
		| Oxypetalum hasslerianum var. mirabile Malme | Synonym |  | TRO | 
	
		| Oxypetalum hederifolium Arechav. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum helios Farinaccio | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum henschenii Malme | Synonym |  | TRO | 
	
		| Oxypetalum hilarianum E. Fourn. | Accepted |  | TRO | 
	
		| Oxypetalum hirsutulum K. Schum. | Synonym |  | TRO | 
	
		| Oxypetalum hirsutum Silveira | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum hoehnei Malme | Accepted |  | TRO | 
	
		| Oxypetalum hookeri Decne. | Synonym |  | TRO | 
	
		| Oxypetalum huilense Pittier | Synonym |  | TRO | 
	
		| Oxypetalum humile (Morong) Hassl. | Accepted |  | TRO | 
	
		| Oxypetalum incanum E.Fourn. | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum insigne (Decne.) Malme | Synonym |  | TRO | 
	
		| Oxypetalum insigne (Decne.) T. Mey. | Synonym |  | TRO | 
	
		| Oxypetalum insigne f. baetaeanum (Silveira) Fontella & E.A. Schwarz | Synonym |  | TRO | 
	
		| Oxypetalum insigne var. burchellii (E. Fourn.) Fontella | Synonym |  | TRO | 
	
		| Oxypetalum insigne var. glabrum (Decne.) Fontella & E.A. Schwarz | Synonym |  | TRO | 
	
		| Oxypetalum integrifolium E.Fourn. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum integrilobum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum intermedium Schltdl. ex Hassl. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum jacobinae Decne. | Synonym |  | TRO | 
	
		| Oxypetalum jacobiniense K. Schum. | Unresolved |  | TRO | 
	
		| Oxypetalum joergensenii T. Mey. | Accepted |  | TRO | 
	
		| Oxypetalum kalanthum Silveira | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum kingii S. Moore | Synonym |  | TRO | 
	
		| Oxypetalum kleinii Fontella & Marquete | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum kuhlmannianum Occhioni | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum kuntzei Schltr. | Synonym |  | TRO | 
	
		| Oxypetalum lagoense E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum lanatum Decne. ex E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum laxum Malme | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum leonii Fontella | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum ligulatum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum lindenianum Turcz. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum lineare Decne. | Accepted |  | TRO | 
	
		| Oxypetalum litorale Phil. | Unresolved |  | TRO | 
	
		| Oxypetalum longipes Malme | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum luschnathii E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum lutescens E.Fourn. | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum lynchianum T. Mey. | Accepted |  | TRO | 
	
		| Oxypetalum macrolepis (Hook. & Arn.) Decne. | Synonym |  | TRO | 
	
		| Oxypetalum macrolepis var. pilosum Malme | Unresolved |  | TRO | 
	
		| Oxypetalum malmei Hoehne | Accepted |  | TRO | 
	
		| Oxypetalum marambaiense Occhioni | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum marginatum Malme | Accepted |  | TRO | 
	
		| Oxypetalum maritimum Hook. & Arn. | Synonym |  | TRO | 
	
		| Oxypetalum martii E. Fourn. | Accepted |  | TRO | 
	
		| Oxypetalum megapotamicum Spreng. | Synonym |  | WCSP (in review) | 
	
		| Oxypetalum melinioides Goyder | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum mexiae Malme | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum microphyllum Hook. & Arn. | Accepted |  | TRO | 
	
		| Oxypetalum microstemma E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum minarum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum molle Hook. & Arn. | Accepted |  | TRO | 
	
		| Oxypetalum molleri Phil. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum monanthum (Vell.) Decne. | Synonym |  | TRO | 
	
		| Oxypetalum montanum Mart. & Zucc. | Synonym |  | TRO | 
	
		| Oxypetalum morilloanum Fontella | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum mosenii (Malme) Malme | Synonym |  | TRO | 
	
		| Oxypetalum mourai Hoehne | Unresolved |  | TRO | 
	
		| Oxypetalum mucronatum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum multicaule E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum multiflorum (Malme) Malme | Synonym |  | TRO | 
	
		| Oxypetalum muticum E. Fourn. | Accepted |  | TRO | 
	
		| Oxypetalum nanum Malme | Accepted |  | TRO | 
	
		| Oxypetalum nigrescens E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum nitidum Malme | Accepted |  | TRO | 
	
		| Oxypetalum niveum Griseb. | Synonym |  | TRO | 
	
		| Oxypetalum oblanceolatum Farinaccio & Mello-Silva | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum oblongifolium (Morong) Lillo | Synonym |  | TRO | 
	
		| Oxypetalum obtusifolium Malme | Accepted |  | TRO | 
	
		| Oxypetalum oliganthum Malme | Synonym |  | TRO | 
	
		| Oxypetalum ophiuroideum Malme | Accepted |  | TRO | 
	
		| Oxypetalum ostenii Malme | Accepted |  | TRO | 
	
		| Oxypetalum pachyglossum Decne. | Accepted |  | TRO | 
	
		| Oxypetalum pachygynum Decne. | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum pallidum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum paludosum Decne. | Synonym |  | TRO | 
	
		| Oxypetalum pannosum Decne. | Synonym |  | TRO | 
	
		| Oxypetalum pannosum var. macranthum Hoehne | Unresolved |  | TRO | 
	
		| Oxypetalum paraguayense Schltr. | Synonym |  | TRO | 
	
		| Oxypetalum paranense Malme | Synonym |  | WCSP (in review) | 
	
		| Oxypetalum pardense E.Fourn. | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum parviflorum (Decne.) Decne. | Synonym |  | TRO | 
	
		| Oxypetalum parvifolium E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum patulum E.Fourn. | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum pauciflorum Occhioni | Synonym |  | TRO | 
	
		| Oxypetalum pauperculum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum pearsonii (Rusby) Goyder & Fontella | Accepted |  | TRO | 
	
		| Oxypetalum pedicellatum Decne. | Synonym |  | TRO | 
	
		| Oxypetalum pilosum Gardner | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum polyanthum (Hoehne) Rapini | Accepted |  | TRO | 
	
		| Oxypetalum pratense Griseb. | Synonym |  | TRO | 
	
		| Oxypetalum proboscideum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum propinquum Decne. | Synonym |  | TRO | 
	
		| Oxypetalum pulchrum Decne. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum rariflorum Malme | Accepted |  | TRO | 
	
		| Oxypetalum reflexum Malme | Accepted |  | TRO | 
	
		| Oxypetalum regnellii (Malme) Malme | Synonym |  | TRO | 
	
		| Oxypetalum regnellii (Malme) T. Mey. | Accepted |  | TRO | 
	
		| Oxypetalum reitzii Fontella & Marquete | Accepted |  | WCSP (in review) | 
	
		| Oxypetalum retusum (Markgr.) Goyder | Accepted |  | TRO | 
	
		| Oxypetalum riparium Kunth | Synonym |  | TRO | 
	
		| Oxypetalum rojasianum Malme | Accepted |  | TRO | 
	
		| Oxypetalum rusbyi (Malme) Liede & Meve | Accepted |  | TRO | 
	
		| Oxypetalum saxatile Decne. | Synonym |  | TRO | 
	
		| Oxypetalum scalae Hicken | Synonym |  | TRO | 
	
		| Oxypetalum schenckii K.Schum. | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum schlechteri Malme | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum schottii E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum schulzii Malme | Accepted |  | TRO | 
	
		| Oxypetalum siliculae E.Fourn. | Synonym |  | WCSP (in review) | 
	
		| Oxypetalum sobralii Occhioni | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum solanoides Hook. & Arn. | Accepted |  | TRO | 
	
		| Oxypetalum spegazzinii Hauman ex Lillo | Synonym |  | TRO | 
	
		| Oxypetalum squamulatum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum stenophyllum Malme | Accepted |  | TRO | 
	
		| Oxypetalum stigmatosum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum stipatum Malme | Accepted |  | TRO | 
	
		| Oxypetalum streptanthum (Malme) Liede & G.H. Rua | Accepted |  | TRO | 
	
		| Oxypetalum strictum Mart. | Synonym |  | TRO | 
	
		| Oxypetalum strictum subsp. polyanthum Hoehne | Synonym |  | TRO | 
	
		| Oxypetalum suaveolens E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum suaveolens Speg. | Synonym |  | TRO | 
	
		| Oxypetalum subcapitatum Malme | Synonym |  | TRO | 
	
		| Oxypetalum subhirtellum Miq. | Synonym |  | TRO | 
	
		| Oxypetalum sublanatum Malme | Accepted |  | TRO | 
	
		| Oxypetalum suboppositum Malme | Accepted |  | TRO | 
	
		| Oxypetalum subriparium Malme | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum tenuiflorum Griseb. | Synonym |  | TRO | 
	
		| Oxypetalum ternifolium E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum tomentosum Wight ex Hook. & Arn. | Synonym |  | TRO | 
	
		| Oxypetalum tomentosum var. parvifolium (E. Fourn.) Fontella & E.A. Schwarz | Unresolved |  | TRO | 
	
		| Oxypetalum tricarunculatum Silveira | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum tridens Malme | Unresolved |  | WCSP (in review) | 
	
		| Oxypetalum tubatum Malme | Accepted |  | TRO | 
	
		| Oxypetalum umbellatum Gardner | Synonym |  | TRO | 
	
		| Oxypetalum umbellatum var. pallidum Hoehne | Synonym |  | TRO | 
	
		| Oxypetalum urbanianum Silveira | Accepted |  | TRO | 
	
		| Oxypetalum uruguayense Arechav. | Synonym |  | TRO | 
	
		| Oxypetalum variegatum Griseb. | Synonym |  | TRO | 
	
		| Oxypetalum vestitum Malme | Synonym |  | WCSP (in review) | 
	
		| Oxypetalum villosum E. Fourn. | Synonym |  | TRO | 
	
		| Oxypetalum warmingii (E. Fourn.) Fontella & Marquette | Accepted |  | TRO | 
	
		| Oxypetalum weberbaueri Schltr. | Accepted |  | TRO | 
	
		| Oxypetalum wightianum Hook. & Arn. | Accepted |  | TRO |