@KurtMN Your comments are very welcome and I thank you for your input!
Regarding my unidentified Philodendron's from the October post on this thread; I probably should have come back here and edited that post once I had the names.
The first one pictured is definitely a juvenile Philodendron eurebescens with the red stems and red blush to the back of the leaves. Regarding my second unidentified little philodendron; I knew that I had a name for it at one time so I went back through my computer files and did find where I had it listed as P. panduriforme; this juvenile came from a cutting of larger P. panduriforme that I used to have.
You refer to something called 'Exotica' but I'm not familiar with that site; is it a plant encyclopedia or a website? I googled but only found websites for on-line plant sellers, Flora Exotica and Exotica Plants but I could not find any philodendrons in their listings. I'm also not understanding what you mean about them listing hastatum in brackets. Is it shown as Philodendron domesticum [hastatum], "hastatum", 'hastatum'? The word hastatum should not be shown in brackets because hastatum is the species. If it were a cultivar name, it would be listed as 'Hastatum'. Although many nurseries and garden centers never get it right which adds to confusion, the correct manner of wording or labeling should be: Philodendron hastatum
Genus: Philodendron
Species: hastatum
When I was trying to research P. domesticum, I searched at the Catalogue of Life website as well as the U.S.D.A. and got zero entries. When I searched The Plant List it came back with Philodendron x domesticum but it says "Unresolved name." At KEW (Royal Botanic Gardens) it says "This name is unplaced."
Apparently what people refer to as Philodendron domesticum is actually a hybrid of unknown origins and there is no species named domesticum so I will keep my plant labeled as Philodendron hybrid (without any species or cultivar name attached) because I don't have any idea of its origins. The late Steve Lucas was a very knowledgeable expert on Aroids and his website has wonderful information. You can read here about Philodendron hastatum and what he had to say about the plant many refer to as P. domesticum
http://www.exoticrainforest.co... Apparently there is no species domesticum so it's more than likely a hybrid of an unknown Philodendron.