This bright yellow squash is about the same size as zucchini but has a curved neck.
Also known as scallop squash, this pale green, yellow or white squash is about 4 inches in diameter, with scalloped edges.
Shaped like the pattypan, the scallopini is larger, thicker and speckled green, like zucchini.
These narrow green squashes are best eaten when small and young, before their tender flesh begins to toughen. Zucchini come in bright gold as well as the better-known green. A pale green round zucchini, known as Ronde de Nice, is sometimes available in farmers' markets and produce stores. It is especially nice for panfrying.
Adapted from Williams-Sonoma Kitchen Companion: The A to Z Guide to Everyday Cooking, Equipment and Ingredients (Time-Life Books, 2000)