Change of address
3 months ago in Variety of Life
A plant pundit comments on plants, the foibles and fun of academic life, and other things of interest.
According to the experts domesticated squashes including pumpkins all belong to one of four species of Cucurbita. Domestication involves selection for desirable traits resulting in different varieties from different places, but all the genetic variation on display was inherent in the wild species. That's what makes the varieties of squashes all the more amazing, and it was truly on display at the Great Pumpkin Patch. The Great Wall of squash, as long and as tall as the barn that props it up, displays about 200 varieties of squash, less than half the number of varieties grown here. You'll get the idea from this smaller display high lighting an attractive array of squash. The GPP constructed such a display on the White House lawn a couple of years ago. The Phactors stocked up on winter squash, and even tried the pumpkin ice cream. Is it good? Well, this expert thinks so.
Wow! Those are some shiny fruits! Quite a few shiny, colorful things actually lack pigments and their apparent color is due to iridescence, the way then bend and reflect light. Supposedly these fruits (Pollia condenstata) are the shiniest of all such biological materials. Now of course plants make attractive fruits to lure seed dispersers, in this case most likely birds, and the birds seek such displays to get a nutritive reward and everyone goes away happy. However these really, really attractive fruits are deceptive providing no reward at all, so any bird that eats these fruits disperses the seeds and considering some effort was involved bascially gets cheated. This works because such fruits mimic a similar rewarding plant, in this case possibly a species of Psychotria (right) that has bright blue rewarding fruits. You don't get fruits colored like this in the temperate zone.
Yesterday's trip to our local farmer's market held no real surprises: peppers were rebounding, tomatoes, except maybe cherry tomatoes, were shot, fall crops were coming into season, and people had a lot of okra for sale, and sadly, most of it was not worth buying. The reason for this is simple; it was all too mature. There are a number of fruits that we usually eat as vegetables that are only edible when immature. The mature fruits are inedible. Okra matures into a hard, dry capsular fruit that splits open along 5 seams to release its seeds. As long as the young fruits are elongating, they are soft enough to consume, but once they reach their mature length, they become fibrous very quickly, and okra grows rather quickly so you must pick any pods more than an inch long once a week. This is the zucchini lesson all over again. Pick them young! But vendor after vendor had great big old things as if large size were a virtue. Hmm, no image of okra in the files, especially a mature fruit, but here's a nice image of an okra flower. The flower is a dead give-away that okra belongs in the mallow/hibiscus family.