Fall-dandelion is a plant that I have rarely seen in the Toronto area but which is extremely common in Quebec and the Maritimes in the summer and fall.
The leaves are found only at the base.
In this way, the plant resembles Common Dandelion.
The leaves in both species are cut in a way which resembles a “lions tooth”. (dent-de-lion from which the English name comes)
Both Fall-dandelion and Common Dandelion are considered as lawn weeds.
Both plants have been introduced from Eurasia.
Sometimes they are in flower at the same time, though Fall-dandelion tends to flower much later in the season.
The Common Dandelion in this photo was growing very near some Fall-dandelion plants.
The flower heads of Fall-dandelion are about 25 mm wide and are held on a slender stalk.
Fall-dandelion grows to between 15 and 45 cm in height.
Miles Hearn