Help identifying orchid from Tabasco, Mexico

[Demandrea]

I could use some help identifying this orchid from Tabasco, Mexico. I saw it while on a visit to an cacao plantation. Muchas Gracias!

[Tesa]

You´ve got an habitus picture? Seems to be related with Lophiaris (mule-eared Oncidiums). May L. lurida?

Tesa

[weng]

Lovely photo, but what size are the flowers? What do the leaves and pseudobulbs look like?
Weng

[justatypn]

The blooms are so pretty, but it will help if we have the whole picture. My first thought was an onicidium of sorts but unsure.

[Ray]

I have to agree with the lophiaris suggestion based upon the flower structure, but it doesn't look all that close to any of the examples at orchidspecies.com.

A natural hybrid, perhaps?

[Demandrea]

Well, I'm not an orchid enthusiast like most of the people here so I'm not sure of the technical terms but to clarify- the size of the blooms were only about 2" and grew in sort of a hanging cluster. It's vine was wrapped around the tree and it had those big, succulent leaves that most orchids had. The tour guide try to tell us it was a vanilla orchid but I had my doubts-- I also have pics of the cacao flower but those aren't orchids so I didn't post them I'll try to post more pics soon--

[Demandrea]

Here is a fuller pic of the whole orchid, it sort of cascades down the tree. It was a very shady area where they were growing cacao seedlings

[Tesa]

Lophiaris seems to be good. But the species...? By the way the other, climbing plant is a Vanilla.

[weng]

Thank you for the additional photo and estimated size of the flower.

I note that the plant itself is tied on to the cocoa tree, so it is quite possible that it is a hybrid.

The flowers do, however, resemble that of Trichocentrum carthagenense, but the flowers of the latter are no larger than 1". The flowers of T. carthagenense are extremely variable, and this has, in turn, led to a plethora of names - Lophiaris carthagenensis, Oncidium carthaginense, O. andreanum, O. henchmannii, O. huntianum, O. kymatoides, O. luridum, O. obsoletum, O. oerstedii, O. panduriferum, O. roseum, O. salvadorense, O. sanguineum, O. undulatum. and the variant closest to your photo is in Orchids of Mexico by Eric Hagsater et al, pg. 128.

On the Internet, you can see a redder variant http://www.orchidspecies.com/orphotd...thagenense.jpg

Weng

[Mahon]

I also believe that this is Trichocentrum carthagenense.

Tricho. luridum and Tricho. carthagenense are two distinct, seperate taxa.

-Pat