| Psittacanthus acinarius (Mart.) Mart. | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus acuminatus Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus acutifolius (Ruiz & Pav.) G.Don | Synonym |  | WCSP (in review) | 
	
		| Psittacanthus aequatorius Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus allenii Woodson & Schery | Synonym |  | TRO | 
	
		| Psittacanthus amazonicus (Ule) Kuijt | Accepted |  | TRO | 
	
		| Psittacanthus americanus (L.) Mart. | Synonym |  | TRO | 
	
		| Psittacanthus amplexifolius Engl. | Accepted |  | TRO | 
	
		| Psittacanthus angustifolius Kuijt | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus antioquiensis Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus atrolineatus Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus auriculatus (Oliv.) Eichler | Accepted |  | TRO | 
	
		| Psittacanthus baguensis Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus barlowii Kuijt | Accepted |  | TRO | 
	
		| Psittacanthus berteroi G.Don | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus bicalyculatus Mart. | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus biternatus (Hoffmanns.) G.Don | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus biternatus (Hoffsgg. in J.H. Schultes) Blume in Schultes & J.H. Schultes | Synonym |  | TRO | 
	
		| Psittacanthus brachynema Eichler | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus brasiliensis (Desr.) Blume | Accepted |  | TRO | 
	
		| Psittacanthus breedlovei Kuijt | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus cajamarcanae Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus calcaratus A.C. Sm. | Accepted |  | TRO | 
	
		| Psittacanthus calyculatus (DC.) G.Don | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus calyculatus var. wurdackii Rizzini | Synonym |  | WCSP (in review) | 
	
		| Psittacanthus cardiphyllus (Willd. ex Roem. & Schult.) Eichler | Accepted |  | TRO | 
	
		| Psittacanthus carinatus Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus caudatus Ule | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus chanduyensis Eichler | Accepted |  | TRO | 
	
		| Psittacanthus chiriquianus Kuijt | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus chrismarii Urb. | Synonym |  | WCSP (in review) | 
	
		| Psittacanthus cinctus (Mart.) Mart. | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus cinctus var. guainiae Rizzini | Synonym |  | WCSP (in review) | 
	
		| Psittacanthus circulatus Rizzini | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus claviceps Eichler | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus clusiifolius Eichler | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus clusiifolius var. pseudojulianus Rizzini | Synonym |  | WCSP (in review) | 
	
		| Psittacanthus coccineus Patschovsky | Accepted |  | TRO | 
	
		| Psittacanthus colbum Eichler | Unresolved |  | TRO | 
	
		| Psittacanthus collum-cygni Eichler | Synonym |  | WCSP (in review) | 
	
		| Psittacanthus complanatus Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus confertiflorus Rizzini | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus cordatus (Hoffmanns. ex Schult. f.) Blume | Accepted |  | TRO | 
	
		| Psittacanthus cordatus (Hoffmanns. ex Schult. f.) G. Don | Unresolved |  | TRO | 
	
		| Psittacanthus cordatus f. latifolia Chodat & Hassl. | Synonym |  | TRO | 
	
		| Psittacanthus cordiae Krause | Accepted |  | TRO | 
	
		| Psittacanthus coronatus Hauman & Irigoyen | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus corymbosus Blume | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus corynocephalus Eichler | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus costanensis Steyerm. | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus costaricensis Kuijt | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus crassicostatus Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus crassifolius (Martius ex Roemer & Schultes) G. Don | Accepted |  | TRO | 
	
		| Psittacanthus cucullaris (Lam.) G.Don | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus cucullaris (Lam.) Blume | Synonym |  | TRO | 
	
		| Psittacanthus cuneifolius (Ruiz & Pav.) Engl. | Synonym |  | TRO | 
	
		| Psittacanthus cuneifolius (Ruiz & Pav.) G. Don | Synonym |  | TRO | 
	
		| Psittacanthus cupulifer (Kunth) G.Don | Synonym |  | WCSP (in review) | 
	
		| Psittacanthus cupulifer (Kunth) Klotzsch | Synonym |  | TRO | 
	
		| Psittacanthus cupulifer (Kunth) Blume | Synonym |  | TRO | 
	
		| Psittacanthus decipiens Eichler | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus destructor G.Don | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus dichotomus (Ruiz & Pav.) Eichler | Synonym |  | TRO | 
	
		| Psittacanthus dichroos Mart. | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus dilatatus A.C.Sm. | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus divaricatus (Kunth) G. Don | Accepted |  | TRO | 
	
		| Psittacanthus dominicensis Domin | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus drepanophyllus Eichler | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus duckei Rizzini | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus eschscholzianus G.Don | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus eucalyptifolius (Kunth) G.Don | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus excrenulatus Rizzini | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus falcifrons (Mart.) Mart. | Synonym |  | WCSP (in review) | 
	
		| Psittacanthus flagellaris Mart. | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus flavoviridis Eichler | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus formosus G.Don | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus furcatus Mart. | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus geniculatus J. Tun | Unresolved |  | TRO | 
	
		| Psittacanthus gentryi Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus gigas Kuijt | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus glaucocoma Eichler | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus glaucosoma Eichler | Unresolved |  | TRO | 
	
		| Psittacanthus gracilipes Rizzini | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus grandiflorus G.Don | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus grandiflorus Blume | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus grandifolius Mart. | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus guianensis Klotzsch | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus hamulifer Kuijt | Accepted |  | TRO | 
	
		| Psittacanthus hoffmannseggianus Blume | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus holtonii Eichler | Synonym |  | TRO | 
	
		| Psittacanthus hortonii Standl. & F.A. Barkley | Synonym |  | TRO | 
	
		| Psittacanthus intermedius Rizzini | Synonym |  | WCSP (in review) | 
	
		| Psittacanthus irwinii Rizzini | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus jacquinii G.Don | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus julianus Rizzini | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus karwinskyanus (Schult.) Eichler | Accepted |  | TRO | 
	
		| Psittacanthus kerberi (E. Fourn.) Engl. | Accepted |  | TRO | 
	
		| Psittacanthus krameri Kuijt | Accepted |  | TRO | 
	
		| Psittacanthus krausei J.F. Macbr. | Accepted |  | TRO | 
	
		| Psittacanthus lamprophyllus Eichler | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus lanceolatus Engl. | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus lasianthus Sandwith | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus lasserianus Rizzini | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus lateriflorus Woodson & Schery | Synonym |  | TRO | 
	
		| Psittacanthus leptanthus A.C.Sm. | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus linearis (Killip) J.F. Macbr. | Accepted |  | TRO | 
	
		| Psittacanthus longibracteatus Blume | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus macrantherus Eichler | Synonym |  | TRO | 
	
		| Psittacanthus martinicensis Eichler | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus mayanus Standl. & Steyerm. | Accepted |  | TRO | 
	
		| Psittacanthus melinonii Engl. | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus mexicanus (C. Presl ex Schult. f.) Blume | Synonym |  | TRO | 
	
		| Psittacanthus microphyllus Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus minor Kuijt | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus mirandensis Rizzini | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus montevidensis Engl. | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus montis-neblinae Rizzini | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus mutisii (Kunth) G.Don | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus mutisii Blume | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus nodosissimus Rizzini | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus nodosus (Desr.) G. Don | Synonym |  | TRO | 
	
		| Psittacanthus nudus (Ant. Molina) Kuijt & Feuer | Accepted |  | TRO | 
	
		| Psittacanthus oblongifolius (Rusby) Kuijt | Accepted |  | TRO | 
	
		| Psittacanthus obmunitus Blume | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus obovatus (Benth.) Benth. ex Eichler | Synonym |  | TRO | 
	
		| Psittacanthus palmeri (S. Watson) Barlow & Wiens | Accepted |  | TRO | 
	
		| Psittacanthus panamensis Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus pangui Kuijt | Accepted |  | TRO | 
	
		| Psittacanthus peculiaris A.C. Sm. | Accepted |  | TRO | 
	
		| Psittacanthus pedicellisquamulosus J. Tun | Unresolved |  | TRO | 
	
		| Psittacanthus pentaphyllus Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus peronopetalus Eichler | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus peruanus Engl. | Synonym |  | TRO | 
	
		| Psittacanthus piauhyensis Rizzini | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus pinguis Eichler | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus pinicola Kuijt | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus piurensis Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus plagiophyllus Eichler | Accepted |  | TRO | 
	
		| Psittacanthus plumieri G.Don | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus pluricotyledonarius Rizzini | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus pusillus Kuijt | Accepted |  | TRO | 
	
		| Psittacanthus pustulosus Rizzini | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus ramiflorus (Moc. & Sessé ex DC.) G. Don | Accepted |  | TRO | 
	
		| Psittacanthus rhynchanthus (Benth.) Kuijt | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus rhynchanthus var. wurdackii (Rizzini) Kuijt | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus rhynchanthus subsp. wurdackii (Rizzini) Kuijt | Synonym |  | TRO | 
	
		| Psittacanthus robustus (Mart.) Marloth | Accepted |  | WCSP (in review) | 
	
		| Psittacanthus roseus J. Tun | Unresolved |  | TRO | 
	
		| Psittacanthus rotundatus Kuijt | Unresolved |  | TRO | 
	
		| Psittacanthus rufescens Rizzini | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus scalpratus Vahl ex Eichler | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus scheryi Woodson | Synonym |  | TRO | 
	
		| Psittacanthus schiedeanus (Schltdl. & Cham.) Blume | Accepted |  | TRO | 
	
		| Psittacanthus semiarticulatus Rizzini | Synonym |  | WCSP (in review) | 
	
		| Psittacanthus siphon Eichler | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus smithii Klotzsch | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus sonorae (S. Watson) Kuijt | Accepted |  | TRO | 
	
		| Psittacanthus speciosus G.Don | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus stenanthus Rizzini | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus sternbergianus (Schult. f.) Blume | Synonym |  | TRO | 
	
		| Psittacanthus subalatus K. Krause | Accepted |  | TRO | 
	
		| Psittacanthus teretiflorus Rizzini | Synonym |  | TRO | 
	
		| Psittacanthus thyrsiflorus G.Don | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus truncatus Kuijt | Accepted |  | TRO | 
	
		| Psittacanthus tumbecensis (Killip) J.F. Macbr. | Accepted |  | TRO | 
	
		| Psittacanthus vellozianus Mart. | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus verticillatus A.C. Sm. | Synonym |  | TRO | 
	
		| Psittacanthus viscoides Engl. | Unresolved |  | WCSP (in review) | 
	
		| Psittacanthus warmingii Eichler | Synonym |  | WCSP (in review) | 
	
		| Psittacanthus weberbaueri Pacz. | Synonym |  | TRO | 
	
		| Psittacanthus wiensii Kuijt | Accepted |  | TRO | 
	
		| Psittacanthus zonatus (Diels) Kuijt | Accepted |  | TRO |