A coccozelle is simply the Italian name for a Crookneck Courgette …
In the link you referred to Harry Paris explains that the different shapes of Summer Squash are because of selection due to consumer preference over the years, nothing to do with the science …
and if you read the link below you’ll see that Harry Paris described his distinction between zucchini and marrow as his ‘preference’ … again, nothing to do with the science …. simply his preference …
Posts
a zucchinis and marrows can be found on page 143
of the book The Compleat Squash
https://archive.org/details/compleatsquashpa0000gold/page/143/mode/1up?view=theater
here the relevant section of page 143
here is link to the squash expert harry paris referred to in the book
https://www.researchgate.net/profile/Harry-Paris
game set match.
In the link you referred to Harry Paris explains that the different shapes of Summer Squash are because of selection due to consumer preference over the years, nothing to do with the science …
and if you read the link below you’ll see that Harry Paris described his distinction between zucchini and marrow as his ‘preference’ … again, nothing to do with the science …. simply his preference …
https://journals.ashs.org/downloadpdf/journals/horttech/6/1/article-p6.pdf
Hoist with your own petard 😉
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.