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This is a discussion on Again dendrobium species no idea the ID. within the Cattleyas, Vandas, Dendrobiums IN BLOOM forums, part of the Orchid Photography category; Originally Posted by Tom-19951 I did a little search on Den. ypsilon-- "Seidenfaden(ref. 454) indicates ...
i asked jim cootes about d.ypsilon and d.lamellatum, although he is no specialist on thai species, but he couldnt see any difference.
furthermore it came out that d.platycaulon is endemic to the philippines and has 1 obvious ridge in the labellum, and d.lamellatum is more widespread (excluding philippines) and has more ridges in the wider labellum.
so, therefore the info and pix on IOSPE for d. lamellatum is wrong.
and i have to agree with your id on zain's plant, d. lamellatum. sizes and colors can be different though.
there might be a difference on your plant and zain's in the anther cap, zain's plant seems to have only 1 with a little beak, unlike yours with 2 and broader.
pls correct me if im wrong,
Tom ,Ron thank you for very informative and interesting discussion in this thread, I know its not that easy to differentiate between this 2 hoping somebody more expert will contribute their knowledge for reference in the future.