When I click on "corn speedwell", there is a picture that I took. Not because I consider this plant a weed, but because I love it because it has some of the tiniest flowers one can find.
Another entry for "buttonweed" has another pic of mine, of a plant spotted in its' native range.
I'm happy to share any pic as an educational example but this context makes me uncomfortable because it associates me with designating these plants as weeds.
Justin's pic of carpetweed is also a plant spotted in its' native range.
An entry for purslane discusses P. oleracea but has a pic by Ginger of P. umbraticola. At the bottom of the article it says, "Photo courtesy of Jenna Antonino DiMare, National Gardening Association"
Meanwhile, there's another article on this site touting the benefits of P. oleracea: https://garden.org/learn/artic...
It seems to be exclusively about P. oleracea but has a pic of P. umbraticola.
Comments on that particular poorly-written article, and the designation of P. oleracea as a "weed": The thread "Purslane Article"
in Purslane and Portulaca forum
This article about "wild violets" says it is about V. papilionacea but has a pic of V. sororia.
"Morning glory" article says, "Morning glory (Ipomoea species) is a popular, annual, flowering vine that often becomes a serious weed in warm climates."
Many/most Ipomoeas are perennial, such as the species pictured with the article (I. triloba). This genus includes sweet potatoes, and so many named cultivar vines that people go to great lengths and expense to cultivate. Within the same paragraph as the previous quote, there is this sentence, "When growing morning glories, locate them near ..."
If it's a weed, why would someone be cultivating it? How confusing. An article discussing this enormous genus as a single "weed" entity is silly.
"Nimblewill" article says, "Nimblewill (Muhlenbergia shreberi) grows as a native perennial grass in moist places in the eastern half of North America..."
and then goes on to suggest that one should replace it with "turf grass" and "better quality grasses." The pic accompanying the article is of M. lindheimeri, not M. shreberi.
If one is going to assemble such a list, why is "chameleon plant" (Houttuynia Cordata) not on this list, or Kudzu?
These articles are embarrassingly sloppy, unscientific, not specific enough to be helpful, and are not a good representation of or reflection on this site.