EXPLANATION OF THE ILLUSTRATION 
CaTAsETUM BARBATUM Lindley. Redrawn from a part 
of Schomburgk’s plate in the Transactions of the 
Linnean Society 17 (1837) tab. 29, showing an 
erect peduncle bearing two male flowers, with the 
labellum barbate, and four female flowers with the 
labellum ventricose, the male flowers resupinate, 
the female flowers non-resupinate. In the lower 
right-hand corner a single male flower is shown re- 
supinate although the raceme,composed of twenty- 
five male flowers, was drooping (in this flower the 
antennae or cirrhi may be seen above the hook- 
like callus at the base of the lip). 
Before the dimorphic nature of this species was 
understood and before the sexes were found occur- 
ring simultaneously on a single plant, the female 
was called Monachanthus viridis and the male Myan- 
thus barbatus. As early as 1826, John Lindley ob- 
served the occurrence of the two sexes of a species 
of Catasetum on the same raceme. He called the 
females “‘monsters’’ and let it go at that. 
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