KEY TO THE SPECIES 
a. Labellum simple, not tripartite 
b. Ovary conspicuously winged with the wings minutely papillose 
on the edges 
1. H.alata Hook. 
b. Ovary not conspicuously winged 
c. Labellum rounded at the base; spur shorter than or equal to 
the ovary 
4. H.eustachya Reichb. f. 
c. Labellum unidentate or sharply angled on each side at base; 
spur longer than the ovary 
7. H.odontopetala Reichb.f. 
a. Labellum tripartite 
d. Spur at least 4 em. long 
e. Flowers few, rarely more than five 
10. H.setifera Lindl. 
e. Flowers numerous in a dense raceme 
8. H.Pringlei B.L. Robins. 
d, Spur considerably less than 4 em. long 
J. The longest leaf more than five times longer than broad, 
oblong 
9. H.repens Nutt. 
Ff. The longest leaf rarely four times longer than broad, 
narrowly or broadly elliptic 
g. Flowers white, lateral segments of the labellum about 
equalling the middle segment 
2. H.clypeata Lindl. 
g. Flowers prevailingly green, lateral segments of the 
labellum exceeding the middle segment 
h. Mid-nerve of the sepals, segments of the labellum 
and anterior segment of the petals papillose 
3. H.crassicornis Lindl. 
h. Sepals, labellum and petals smooth 
2. Spur less than 1 em. long 
5. H.hondurensis Ames 
i. Spur more than 1 em. long 
6. H.novemfida Lindl. 
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