purplish-red, May 21, 1938, Williams # Nagel 3864 (Type in Herb. 
Ames No. 50433). 
Govenia liliacea ( La Llave Lex.) Lindl. var. 
Purpusii (Schltr.) L. O. Williams comb. nov. 
Govenia Purpusii Schlechter in Beihefte Bot. Cen- 
tralbl. 25, Abt. 2 (1918) 412; Beihefte Fedde Re- 
pert. 59 (1921) t. 61, fig. 241. 
Govenia liliacea var. Purpusii resembles a small and 
immature Govenia liliacea , but all of the plants of the 
variety which I have seen seem to bear but a single leaf 
with the possible exception of one plant on the Conzatti 
and Gonzalez specimens which may have two leaves as 
in the species. The structure of the flower is the same in 
the variety as in the species except that in the variety 
the apex of the lip tends to be plicate. 
Mexico : Cerro de San Felipe, Oaxaca, at 8000 meters altitude. 
May 22, 1898, Conzatti fy Gonzalez 70S', Matrata, Vera Cruz, May 7, 
1987, Matvda 1285; cool rocky places, Sierra de Tequila, Jalisco, 
July 5, 1893, Pringle 4419; Cerro Verde, Oaxaca, July 1908, Purpus 
3613. 1 
Vandopsis undulata (Lindl.) J.J.Smith in Nat. 
Tijds. Ned.-Ind. 72 (1912) 7. 
Vanda undulata Lindley in Joum. Linn. Soc. Bot. 
3 (1859) 42. 
Stauropsis undulata Bentham & Hooker filius in FI. 
Brit. Ind. 6 (1890) 27—Hooker filius in Ann. Roy. 
Bot. Gard., Calcutta 5 (1895) 36, t. 55—King & 
Pantling in Ann. Roy. Bot. Gard., Calcutta 8 (1898) 
205, t. 275. 
1 The original number cited by Schlechter in his description is 2613 
but that is probably a typographical error as there is a drawing of 
the type in the Ames Herbarium, prepared by Schlechter, and it 
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