Mystery seed

My mystery summer squash is probably an interloper, based on the composition of the Summer Squash mix packet from Gourmet Seeds that I recently received (from a second order).

Even though the packet is labeled C. moschata, the variety list (Di Napoli, Romanesco, Rondi de Nice, Golden, and Bianco di Trieste) are largely C. pepo, I think. I recognize all of these, except for the 'Golden' in my satellite garden plants. But I think 'Golden' was replaced by a gourd, which is quite tasty when young, but is not happy in our summer heat (the leaves wilt dreadfully in the afternoon).

Happily, I've been harvesting the other squash varieties, too, having the best summer squash harvest I've ever had (aside from the tromboncino squash, which is flourishing).