Polystachya clavata Lindley in Bot. Reg. 28 (1842) 
Mise. p. 61., no. 71. 
Polystachya Weigeltti Reichenbach filius in Linnaea 
25 (1852) 230. 
Polystachya nana Wlotzsch in Ind. Sem. Hort. Berol. 
(1853) N. 5, nomen. 
Polystachya caracasana Reichenbach filius in Bonpl. 2 
(1854) 15. 
Polystachya foliosa Reichenbach filius in Walp. Ann. 
6 (1863) 640.—Cogniaux in Martius FI]. Bras. 3, pt. 4 
(1895) 316. 
Polystachya minor Fawcett & Rendle in Journ. Bot. 
48 (1910) 106; FI. Jam. 1 (1910) 49, t. 7, figs. 6-7. 
Polystachya altilamellata Schlechter in Fedde Repert. 
10 (1912) 885. 
Polystachya ecuadorensis Schlechter in Fedde Repert. 
Beih. 8 (May 1921) 90; in Fedde Repert. Beih. 57 
(1929) t. 95, nr. 370. 
Polystachya Poeppigu Schlechter in Fedde Repert. 
Beih. 9 (Sept. 1921) 155. 
Polystachya cubensis Schlechter in Urban Symb. An- 
till. 9 (1928) 59. 
Polystachya amazonica Schlechter in Beih. Bot. Cen- 
tralbl. 42, Abt. 2 (1925) 77; in Fedde Repert. Beih. 
58 (1980) t. 47, nr. 186. 
Polystachya Huebneri Schlechter l.c., 112. 
Polystachya stenophylla Schlechter |.c. 113. 
Prolonged study of collections of Polystachya from 
the American tropics, following years of varied and 
changing determinations, has convinced me that the 
characters heretofore used for specific separation are 
highly variable and indecisive and that such classic treat- 
ments as that of Cogniaux in Martius, Flora Brasiliensis 
are untenable. Strange as it may seem, it was the vege- 
tative features (that are known to be extremely incon- 
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