Causes of ALS. ALS is a somewhat diverse and decidedly mystifying disease. In more than nine out of every 10 cases diagnosed, no clear identifying cause of the disease is apparent, that is, patients lack an obvious genetic history, complete with affected family members.
Here is a list of some of the more common varieties, along with fruit and plant descriptions. 1  Aristocrat - this variety features a waxy skin and is medium green in color.  Black Zucchini - very dark green skin and almost white flesh, very common variety of zucchini.
Types of Squash. Species of squash include hubbard squash, buttercup squash, butternut squash, pumpkins, acorn squash, summer squash and zucchini. Summer squash, like zucchinis, are harvested while they are still soft and small, while winter squashes are harvested when they are fully grown, at the end of summer, and cured to harden the skin.