TYVM for taking the time to yak about this silly little weed! I think I've asked you about this before. Sorry if it's a re-discussion.
When we moved in '14, it set my investigation back to almost the beginning.Next year I'm going to try to send samples to various sources & other plant lovers who are interested and see if that helps others to see that there are 2 diff plants. I didn't realize they were different, though I've definitely seen many pics of both for decades, until I'd had the 2nd one around for about a year and noticed diff behavior in same conditions. I would understand if nobody in FL is interested in "free weeds to observe." Ha!
I've started new patches of both in various spots here but this yard is so small, IDK if it will produce desired results. I hate to let it loose in my Mom's yard because it could get out of hand there, more than I could pull up later after finished investigating. Maybe I'll get distracted with something more interesting. That would be great! LOL!
I'm about at the limit of what "they" can do with glasses too. Maybe they'll improve what they can do to help us going-blind folks at least as fast as our eyes deteriorate? IDK but we can hope! ;) Do you also have 3 options for seeing something - top/bottom bifocal & taking off glasses & getting your face right in it?