Pachychilus pubescens (Blume) Blume, Mus. Bot. Lugd. Bat. 2 (1856) 173
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Apaturia chinensis Lindl., Gen. Sp. Orchid. Pl. (1831) 131
Type: Vachel s.n. (Chia, Macao)
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Apaturia montana Lindl., Gen. Sp. Orchid. Pl. (1831) 131
Type: Wallich 3738 (India) (K); Macrae s.n. (Ceylon, Mt. Nuera Ellia) (K)
Pachystoma montanum (Lindl.) Rchb.f., Bonplandia 3 (1855) 251
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Apaturia senilis Lindl., Gen. Sp. Orchid. Pl. (1831) 130
Type: Wallich (Bruce) 3739 (India, Syllet) (lecto K, chosen by Clements 1989; isolecto K-WALL); Hamilton s.n. (Uligapur and Kalegung) (syn K, K, K-WALL)
Pachystoma senile (Lindl.) Rchb.f., Bonplandia 3 (1858) 251
Pachychilus senilis (Lindl.) Blume, Mus. Bot. Lugd. Bat. 2 (1856) 173
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Apaturia smithiana Lindl., Gen. Sp. Orchid. Pl. (1831) 131
Type: Wallich 3737 (Kudjura-ghaut, Oude) (holo K; iso K-WALL, L)
Pachystoma smithianum (Lindl.) Rchb.f., Bonplandia 3 (1858) 251
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Apaturia lindleyana Wight, Icon. Pl. Ind. Or. 5 (1851) 8, t. 1662
Type: Jerdon s.n. (India, Coorg) (holo K; icon. K)
Pachystoma lindleyanum (Wight) Rchb.f., Bonplandia 3 (1855) 251
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Pachystoma edgeworthii Rchb.f. in Walp., Ann. Bot. Syst. 3 (1853) 464
Type: Edgeworth 25 (India NW, Dyanhar, Khadia) (holo K; illustr. K)
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Pachychilus pantanus Blume, Mus. Bot. Lugd. Bat. 2 (1856) 173
Type: Korthals s.n. (Borneo, Padong antam) (holo L 2x; iso K)
Neottia pantanis Korth. ex Blume, Mus. Bot. Lugd. Bat. 2 (1856) 173 (in syn.)
Pachystoma pantanum (Blume) Miq., Fl. Ned. Indië (1859) 675
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Eulophia holtzei F.Muell., Victorian Naturalist 6 (1889) 55
Type: Holtze s.n. (Australia Port Darwin) (holo K)
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Pachystoma gracile Schltr., Bot. Jahrb. Syst. 39 (1906) 66
Type: Schlechter 15752 (New Caledonia N, Ou Hinna) (holo B, lost)
Pachystoma pubescens Blume var. gracile (Schltr.) N.Hallé, Fl. Nouv.-Caléd. Dép. 8 (1977) 205
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Pachystoma chinensis Hayata, J. Coll. Sci. Imp. Univ. Tokyo 30 (1911) 321 (non Rchb.f.)
Type: Kawakami & Mori 3735 (Taiwan, Nanto, Shashizan) (holo TI)
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Pachystoma affine Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 413
Type: Schlechter 16573 (PNG, 'Kaiser Wilh. Land', Minjem R., Jawer) (holo B, lost)
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Pachystoma papuanum Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 412
Type: Schlechter 18472 (PNG, foor Bismarck Ra.) (holo B, lost)
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Pachystoma brevilabium Schltr., Repert. Spec. Nov. Regni Veg. 17 (1921) 69
Type: Esquirol s.n. (VI-1912; Lo-kouey, Kweitschou) (holo B, lost)
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Pachystoma formosanum Schltr., Repert. Spec. Nov. Regni Veg. Beih. 4 (1919) 245 (as nom. nov.)
Type: ?
Pachystoma chinense Rchb.f. var. formosanum (Schltr.) S.S.Ying, Col. Illust. Indig. Orchid. Taiwan 1, 2 (1977) 488
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Eulophia hirsuta J.Joseph & Vajr., Bull. Bot. Surv. India 17 (1975 publ. 1978) 192, fig. 1-8a
Type: Vajravelu 46201 (holo CNH; iso Rapinat herb; Kanjilal herb.)
Pachystoma hirsuta (J.Joseph & Vajr.) C.S.Kumar & Manilal, Kew Bull. 42 (1987) 942