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BOTANICAL MUSEUM LEAFLETS 
HARVARD UNIVERSITY 
HINTONELLA, A NEW GENUS OF THE 
ORNITHOCEPHALEAE FROM MEXICO 
BY 
OakES AMES 
In FEsBRuary, 1938, I received for study from the 
Royal Botanic Gardens, Kew, two packets containing 
specimens of a Mexican orchid collected by George Hin- 
ton in the District of Temascaltepec. These specimens 
were clearly referable to the Ornithocephaleae, but the 
pollinia were imperfect. Subsequently twenty-three spec- 
imens (Hinton 8928) were received and these made pos- 
sible a thoroughgoing study of the generic characters. 
In May 1988, my colleague Dr. Louis O. Williams, 
collected fruiting specimens of this species in the moun- 
tains northwest of Cuernavaca. ‘The withered remains of 
the perianth were still in perfect condition and not only 
made identification possible but furnished additional evi- 
dence regarding the later stages of development of the 
vegetative and fruiting organs. 
Hintonella is a member of the Ornithocephaleae as 
interpreted by Rudolf Schlechter. It is closely allied to 
the Brazilian genera Phymatidium and Chytroglossa. I 
have interpreted the column as being produced into a 
fleshy bilobed foot to which the lateral sepals are adher- 
ent. The point of union is just below the basal, stigmatic 
orifice. In some of the better preserved flowers the pres- 
ence of a distinct foot to which the labellum is rigidly 
[ 185 | 
