Terete Oncidium in Veracruz state?

[estación seca]

In 2001 I was in Veracruz, México, on the Atlantic slope in seasonally dry oak forest. It is a spot where Dioon edule
ecotype Río Verde grows. In the crown of an oak, in what would be always-dense shade, I saw a terete-leaved plant I think was an Oncidium. It was too dark under the canopy for me to get a photo because the plant was out of flash range and we didn't have a ladder. The leaves were dark green, singly grooved, 12-18 inches long, spindle-shaped, and came to a sharp point. There were about 10 leaves hanging down from the base in a tight cluster. I could not see well enough to see pseudobulbs. I saw no old inflorescences.

Any idea which species this could be? It did not look like O. cebolleta, which is a much smaller plant. Thanks.

[MrHappyRotter]

What about checking out the Oncidium section Cebolletae?

Most likely you'd need to have seen one of the plants in bloom to identify it, but maybe it's something like this?

IOSPE PHOTOS

[estación seca]

Originally Posted by MrHappyRotter

What about checking out the Oncidium section Cebolletae...? ...something like this?

IOSPE PHOTOS

I looked there first. Nothing in that section has leaves as thick as what I saw. Also, there are few photos of leaves on IOSPE.

I looked further online. There is an obsolete section of Oncidium, Miltoniastrum, the "mule-eared oncidiums." These are now considered genus Lophiaris. Perhaps rather than cylindric-subulate leaves I saw longer leaves so keeled they looked subcylindric? I was at least 10 feet below so couldn't see the plant from other angles. There are several Lophiaris in México. Has anybody here seem them in habitat? Which species have leaves 12"-18" long?