A GENERIC SYNONYM 
BY 
Oakes AMES 
Dipodium squamatum Robert Brown ex Lind- 
ley Gen. & Sp. Orch. Pl. (1888) 186. 
Orphrys? squamata Forster Fl. Ins. Austr. Prodr. 
(1786) 59, (no. 310). 
Cymbidium squamatum Swartz in Kgl. Vetensk. 
Acad. Handl. 21 (1800) 238. 
Epidendrum squamatum Poiret in Lamarck Encycl. 
Suppl. 1 (1810) 376. 
Trichochilus neo-ebudicus Ames in Journ. Arn. Arb. 
13 (1982) 142. 
THe GeENus Diropium, as treated by Pfitzer in his 
classification of the Orchidaceae in Engler and Prantl’s 
Die Natiirlichen Pflanzenfamilien, is assigned to the 
Acrotonae-Pleuranthae. This is a concept characterized 
by a laterally produced flower-shoot in contradistinction 
to the Acrotonae-Acranthae, a concept characterized by 
a terminally produced flower-shoot. Dipodium squama- 
tum R. Brown and D. punctatum R. Brown, the Aus- 
tralasian species taken by Pfitzer to represent the genus 
Dipodium, are, as I interpret them, distinguished by a 
terminally produced flower-shoot and would seem prop- 
erly to belong in his Acrotonae-Acranthae. 
When I proposed the new genus Trichochilus, I was 
unmindful of Dipodium, a well-figured group with nu- 
merous specimens in my herbarium. Consequently, when 
the material in hand with a terminal inflorescence failed 
to work out as belonging to Pfitzer’s Acrotonae-Acran- 
thae, | thought I was justified in proposing a new genus. 
Pfitzer briefly characterized the genus Dipodium un- 
der his Acrotonae-Pleuranthae, and made the significant 
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