I have what I believe is a row of Concord growing in my yard, but not
100% certain. They are bright purple and now if I crush one, it has 4
stones buried within green fruit. It is still very tart and I do NOT
get a red stain on the fingers (yet?) when I crush the skins in the
hand. I don't have a picture of these, but can compare if someone can
help!

By the way, I am in the Erie, PA area, but south of I-90 where there
are far fewer grapes than North of I-90, where the welch's concords
grow en masse.

Now, riding down the road a couple days ago, I saw some grapes growing
high up on an old wild apple tree, and I am trying to figure out what
they may be. The grapes are beautiful in size and color, the ones in
this picture are approximately the same size diameter as a dime or
penny. When squeezed, the fruit is white (clear) and also has four
stones. The taste is very sweet, maybe like a concord grape, but
doesn't taste like welch's or like grape jelly. When I squeeze these
skins which are darker, I'd label as black, they do indeed leave a red
stain on the fingers. I would also say they have a bit of tannin, but
not heavy with it, at least with my small taste.

Here are the links to the pics (about 330K each). I have one of a
medium cluster, and one of a leaf with cluster in the background.


http://img205.imageshack.us/img205/8...dsweet1vq0.jpg


http://img215.imageshack.us/img215/8...dsweet2ry0.jpg


Here I have a picture of what I just generically call "wild grapes".
These are much smaller, about the size of a pencil eraser, dark
purple, very little pulp, very bitter, and stain the hands purple
immediately, they're also full of seeds. I made some wine of these
last year, needed to make like a fruit wine with lots of water and
sugar. Surprisingly it isn't bad, but I'll know more in a year, any
help with these would be appreciated as well. These are clearly
different from the ones above.

http://img205.imageshack.us/img205/4264/wildsourfd2.jpg

many thanks in advance

Greg, Erie, PA