Wormseed Sandmat – Euphorbia vermiculata
Quite similar to the Euphorbia maculata (Spotted Spurge) which is not always spotted.
Note how the leaf shape of this species is a bit different, somewhat broader the base on the long side and broader at the apex on the short side of the blade. The apices are essentially acute. Perhaps the most significant characteristic is the presence of pilose hairs on the leaf blades.
Spotted Spurge (Sandmat in the US) – Euphorbia maculata aka Chamaesyce maculata
US name appears to be sandmat.
Common purslane – Portulaca oleracea
Probably an old world species that has naturalized in much of the world
Common (Broad-leaved) enchanter’s nightshade – Circaea lutetiana canadensis
Location – BDU Garden
Broad-leaved enchanter’s-nightshade is native to eastern North America. It is found in moist to wet and riparian forests or on rocky hillsides in drier forests.
Common quickweed/Shaggy Soldier/Peruvian Daisy – Galinsoga quadriradiata
A non native (South American) weed that springs up in disturbed sites and seed spreads very efficiently
Location : uncut lawn in Baie-D’Urfé
Common yellow wood-sorrel – Oxalis stricta
Also found in the garden as our untended lawn gradually turns into a flower meadow … “a cosmopolitan plant, perhaps native to North America”
Rough Cinquefoil – P. norvegica seems most likely although Rusian (or Downy) Cinquefoil – P.intermedia is closely related and hard to distinguish photographically. USDA range maps state native to Canada for both spp.
Another introduced species of wild plant from Eurasia that is now growing in our Montreal garden