Together with:
Honorable mentions:
(6) Medicago lupulina (not Trifolium but looks similar)
Not in the picture but only a few meters away:
[7] Trifolium ochroleucon (?!)
[8] Trifolium arvense
Growing in a newly reconstructed retention area with seemingly poor soil and low vegetation.
Also RIP: Bolboschoenus laticarpus
Mature red spruce, eastern hemlock and yellow birch, scattered white pine and balsam fir.
Intertidal on exposed bedrock in bay of Fundy. Large vesicles. Long strands; several feet in length.
Beachcast. Thinking mertensii because of the paired branching pattern, with the upper branch continuing to grow and branch, with the lower being terminal. Also thiking P. patagiatum because lower branch not serrated and main branches approx 3-5mm wide, too big for mertensii?