Someone gave me this plant, and told me it was a courgette. It isn't, clearly. But what is it? I don't know. I will have to wait and find out. I hope it's not a boring old marrow. I am rather hoping it's a melon, but I doubt it.
...the banks all green with celery, the endive rejoicing in a rivulet; the cucumber snaking amidst the grass and swelling to greatness... (Virgil's Georgics IV:120, trans. C. Day Lewis)