The images seems clearly a monstera, not a phylo. some also called this Monstera borsigiana.

Thanks for your reply, Tofi! Could you kindly explain how you came to that conclusion? What are the obvious and/or subtle differences?

Sorry, my description might be biased, caused this is only based on my little knowledge (in my home country I collect lots of arroid, one of my favorite plants among toooo... many). And I am not a botanist, so I’d be happy to be corrected.

The monstera leaves definitely will changed, became splited and perforated (phylo will changed bit too, but not nearly as drastically). Monstera leaves are less fleshier, but more pliable, also more shinier. (phylo more of fleshy). Petiole and stem also more fibrous if you cut them in monstera. For these reasons, monstera are more suitable for cut-flower foliage.

The geniculum (part of the petiole right below the leaves blades) is prominent in monstera (but not as prominent as in anthuriums), in phylo not clear (may be absent, never see any). It look like collar, rigid, and leaves can rotated at this point if it trying to reach sun or in young leaves, making the leaves appear angled to the straight rigid petiole, in phyllo the leaves and whole petiole will twist all together and seems facing same direction.

Lower petioles attach/covers more of the stem in monstera (amplexicaul). The petiolar sheath more prominent, and in some flare open. The end of the petiolar sheaths, will have ridge/grooves (not clear in young leaves), it is called canalicule and it will continue to the geniculum. These features are not exist in phylos. and it seems there are in your plant.

In phylos leave base usually auriculate, only partially covering stem, and sheating petiole smaller, closed, and only open when flower or axillary bud grow.

Cataphylls clearly visible in all phylos, new leaves grow under it, but I did not noticed cataphyls in monstera (may be there is), new leaves grow under petiole sheaths, seems like they borne out of it.

And of course flower structure bit different too, but you wont see it, unless your plant matures (which of course will be fantastic).

Excellent information! You are very knowledgeable and I thank you so much for sharing!