there are no leaves preserved with the type-material. Reichen- 
bach suggests a possible hybrid between A. multiflora and A. 
papillosa. For the time being | consider this species as a prob- 
able synonym for A. rigida. 
The following taxonomic presentation summarizes our 
knowledge of ‘‘The Rigid Air-Blossom”’: 
Acampe rigida (Buch.-Ham. ex J.E. Sm.) P.F. Hunt in Kew 
Bull. 24: 98, 1970; Seidenfaden in Bull. Mus. Nat. Hist. 
Nat. Paris ser. 3,71, Bot 5: 105, 1972 (1973); ibid. 1975: 4. 
Basionym: Aerides rigida Buch.-Ham. ex J.E. Smith, in Rees, 
Clycopedia 39, 1819. 
Syn.: Vanda multiflora Lindl., Coll. Bot. t. 38, January 1826; 
Lindl., Wall. Cat. No. 7325, 1832; Lindl., Gen. and 
Sp. Orch. Pl. 216, 1833; Lindl. in Paxt. Fl. Gard, 2:21, 
1851. 
Vanda longifolia Lindl., Gen. and Sp. Orch. Pl. 215, 
1833; Lindl. in Paxt. Fl. Gard. 2: 21, 1851. 
Acampe multiflora (Lindl.) Lindl., Fol. Orch. Acampe I, 
April 1853; Benth. in Hook. Journ. Bot. 7: 35, 1855; 
Rchb. f. in Walp. Ann. 6: 872, 1864; Rolfe in Journ. 
Linn. Soc. Bot. 36: 36, 1903; Dunn & Tutcher in Kew 
Bull. Add. ser. 10: 266, 1912; Schlechter in Fedde, 
Rep. Beih. 4: 295, 1919; Merrill & Metcalf in Lingnan 
Sci. Journ. 21: 5, 1945; Tang & Leung, Check List 59, 
1967; Hu in Quart. Journ. Taiwan Mus. 24: 41, 1972. 
Acampe longifolia (Lindl.) Lindl., Fol. Orch. Acampe 1, 
1853; Rchb. f., in Walp. Ann. 6: 872, 1864; Holttum, 
Orch. Malaya ed. 2, 625, 1957; Seidenfaden & 
Smitinand, Orch. Thailand 4(2): 703, Fig. 523, 1965; 
Kerr in Nat. Hist. Bull. Siam Soc. 23: 210, 1969; 
Hara, Fl. E. Himalaya, 2nd Rep. 176, 1971; Rao & 
Balakrishnan in Bot. Surv. India 20: 204, 1973; 
Banerji & Thapa in Bomb. Nat. Hist. Soc. 70: 26, 
1973. 
?Acampe intermedia Rchb.f. in Allg. Gartenz. 24: 217, 
1856; Hook. f., Fl. Brit. Ind. 6: 66, 1890. 
?Acampe pachyglossa Rchb.f., Otia Bot. Hamb. 2: 76, 
1881; Rchb.f. in Bot. Zeit. 49: 449, 1881; Senghas in 
Die Orchidee 15: 165, 1964. 
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