Observações de john_baur

I'm struggling to figure out how to distinguish V. communis from V. sororia. I am leaning towards V. communis for this group because I think the sepals are acuminate from the middle. I am troubled by the auricles, though, which I would argue are not prominent but maybe it is just early in the season and they will develop later. Also, the calyx is eciliate in the basal half, which is inconsistent with V. sororia sensu stricto, but I don't know how I can rule out the glabrous variant of V. sororia. (Am I out of range for that?) I am also troubled by the fact that I see sparse hairs on the spurred petal, but that doesn't lean one way or the other. Lastly, I would note the presence of Confederate Violet (f. priceana) on the right side of the picture. I believe that is correctly placed in V. communis and is of similar stature to the purple flowered plants here, supporting the ID as communis. Also, most of the violets I noted in this location were f. priceana, so can I ID these purple violets by association? (NOTE: iNaturalist currently places f. priceana in V. sororia)

Finally found Duckweed in Sharon! I am assuming this is Common Duckweed (Lemna minor) because most of the other duckweeds listed on GoBotany are shown as only occuring historically in Massachusetts. The one other species that is extant (Ivy-leaved Duckweed, L. trisulca) appears to have distinctive leaves.