Sentence:  You can use squash standbys such as zucchini and crookneck in this recipe, but it's even more beautiful with a mix of colors and shapes, from sunny yellow pattypans to ridged <WSD>Romanescos</WSD> to the perfectly round, aptly named eightball. 
Meaning of the word marked with <WSD> tags:  (Romanesco broccoli), a light-green edible flower bud of the species "Brassica oleracea", which is thus related to broccoli and cauliflower. Its form is a natural approximation of a fractal.