Gymnosiphon philippinensis Pelser, Salares & Barcelona species accepted

Gymnosiphon queenslandicus B.Gray & Y.W.Low species accepted

Gymnosiphon syceorosensis Nickrent species accepted

Gymnosiphon urbani (Goebel & Suess.) V.Merckx & Byng species accepted

Gymnosiphon mayottensis Cheek species accepted

Gymnosiphon afro-orientalis Cheek species accepted

Gymnosiphon samoritoureanus Cheek species accepted

Gymnosiphon constrictus Maas & H.Maas species accepted

Gymnosiphon marieae Cheek species accepted

Gymnosiphon torricellense Schltr., 1912 species accepted

Ptychomeria glaziouvii (Urb.) Schltr. species synonym

Gymnosiphon glaziouvii Urb. species synonym

Gymnosiphon fimbriatus (Benth.) Urb. species accepted

Ptychomeria fimbriata Benth. species synonym

Gymnosiphon guianensis Gleason species accepted

Ptychomeria guianensis (Gleason) Brade species synonym

Gymnosiphon sphaerocarpus Urb. species accepted

Ptychomeria sphaerocarpa (Urb.) Schltr. species synonym

Gymnosiphon affinis J.J.Sm. species accepted

Gymnosiphon torricellensis Schltr. species synonym

Gymnosiphon longistylus (Benth.) Hutch. species accepted

Dictyostega longistyla Benth. species synonym

Gymnosiphon squamatus C.H.Wright species synonym

Ptychomeria squamata (C.H.Wright) Schltr. species synonym

Gymnosiphon suaveolens (H.Karst.) Urb. species accepted

Ptychomeria suaveolens (H.Karst.) Schltr. species synonym

Benitzia suaveolens H.Karst. species synonym

Gymnosiphon minahassae Schltr. species accepted

Gymnosiphon capitatus (Benth.) Urb. species accepted

Ptychomeria capitata Benth. species synonym

Gymnosiphon okamotoi Tuyama species accepted

Gymnosiphon panamensis Jonker species accepted

Gymnosiphon danguyanus H.Perrier species accepted

Gymnosiphon aphyllus Blume species accepted

Gymnosiphon borneensis Becc. species synonym

Gymnosiphon nanus (Fukuy. & T.Suzuki) Tuyama species synonym

Gymnosiphon pedicellatus Schltr. species synonym

Gymnosiphon usambaricus Engl. species accepted

Dictyostega usambarica (Engl.) Engl. species synonym

Ptychomeria usambarica (Engl.) Schltr. species synonym

Gymnosiphon breviflorus Gleason species accepted

Ptychomeria breviflora (Gleason) Brade species synonym

Gymnosiphon niveus (Griseb.) Urb. species accepted

Gymnosiphon fawcettii Urb. species synonym

Ptychomeria germainii (Urb.) Stehlé species synonym

Ptychomeria portoricensis f. roseocyanea Cif. form synonym

Ptychomeria nivea Griseb. species synonym

Gymnosiphon parviflorus Urb. species synonym

Gymnosiphon portoricensis Urb. species synonym

Ptychomeria portoricensis (Urb.) Schltr. species synonym

Ptychomeria parviflora (Urb.) Schltr. species synonym

Ptychomeria fawcettii (Urb.) Schltr. species synonym

Gymnosiphon germainii Urb. species synonym

Gymnosiphon cymosus (Benth.) Benth. & Hook.f. species accepted

Ptychomeria cymosa Benth. species synonym

Gymnosiphon papuanus Becc. species accepted

Gymnosiphon celebicus Schltr. species synonym

Gymnosiphon divaricatus (Benth.) Benth. & Hook.f. species accepted

Gymnosiphon tuerckheimii Jonker species synonym

Gymnosiphon cornutus (Benth.) Benth. & Hook.f. species synonym

Ptychomeria poeppigiana (H.Karst.) Schltr. species synonym

Benitzia poeppigiana H.Karst. species synonym

Ptychomeria divaricata Benth. species synonym

Gymnosiphon mattogrossensis (Malme) Jonker species synonym

Ptychomeria mattogrossensis Malme species synonym

Ptychomeria tenella var. minor Benth. variety synonym

Ptychomeria mutica Benth. species synonym

Gymnosiphon arcuatus Urb. species synonym

Ptychomeria arcuata (Urb.) Brade species synonym

Ptychomeria cornuta Benth. species synonym

Gymnosiphon muticus (Benth.) Urb. species synonym

Gymnosiphon recurvatus Snelders & Maas species accepted

Gymnosiphon tenellus (Benth.) Urb. species accepted

Gymnosiphon pusillus Urb. species synonym

Ptychomeria tenella Benth. species synonym

Gymnosiphon jamaicensis Urb. species synonym

Ptychomeria jamaicensis (Urb.) Schltr. species synonym

Ptychomeria glaziovii (Urb.) Schltr. species synonym

Ptychomeria pusilla (Urb.) Schltr. species synonym

Gymnosiphon glaziovii Urb. species synonym

Gymnosiphon bekensis Letouzey species accepted

Gymnosiphon minutus Snelders & Maas species accepted

Gymnosiphon brachycephalus Snelders & Maas species accepted

Gymnosiphon neglectus Jonker species accepted

Gymnosiphon oliganthus Schltr. species accepted

Gymnosiphon pauciflorus Schltr. species accepted

Desmogymnosiphon chimeicus Guinea species synonym

Cymbocarpa saccata Sandwith species synonym

Cymbocarpa refracta Miers species synonym

Gymnosiphon refractus (Miers) Benth. & Hook.f. species accepted

Cymbocarpa refracta f. albida Cif. form synonym

Cymbocarpa urbani Goebel & Suess. species synonym

Gymnosiphon saccatum (Sandwith) V.Merckx & Byng species accepted

Burmannia nana Fukuy. & T.Suzuki species synonym