> ...there’s nothing in the Legendarium suggesting there can be unions of anything other than Men and Elves, Men and Orcs, and Elves and Maiar.
Tolkien, Race, and Racism in Middle-earth[1] has a long section discussing this. Tolkien regarded elves, men, hobbits, dwarves, and orcs all as races of one species, who thus could interbreed.
Thanks! That was the impression I had, but as I was writing the comment I realized I couldn’t recall any specific line that made me think that all the children were basically the same species (though I did know that Hobbits were counted among Men).
Tolkien, Race, and Racism in Middle-earth[1] has a long section discussing this. Tolkien regarded elves, men, hobbits, dwarves, and orcs all as races of one species, who thus could interbreed.
[1] https://www.amazon.com/Tolkien-Racism-Middle-earth-Robert-St...