Fall-dandelion (Scorzoneroides autumnalis)

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.

Fall-dandelion (Scorzoneroides autumnalis)

The leaves are found only at the base.

Fall-dandelion (Scorzoneroides autumnalis)

In this way, the plant resembles Common Dandelion.

Dandelion (Taraxacum officinale)

The leaves in both species are cut in a way which resembles a “lions tooth”. (dent-de-lion from which the English name comes)

Fall-dandelion (Scorzoneroides autumnalis)
Fall-dandelion (Scorzoneroides autumnalis)
Fall-dandelion (Scorzoneroides autumnalis)

Both Fall-dandelion and Common Dandelion are considered as lawn weeds.

Fall-dandelion (Scorzoneroides autumnalis)
Dandelion (Taraxacum officinale)

Both plants have been introduced from Eurasia.

Fall-dandelion (Scorzoneroides autumnalis)

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.

Dandelion (Taraxacum officinale)

The flower heads of Fall-dandelion are about 25 mm wide and are held on a slender stalk.

Fall-dandelion (Scorzoneroides autumnalis)

Fall-dandelion grows to between 15 and 45 cm in height.

Fall-dandelion (Scorzoneroides autumnalis)
Fall-dandelion (Scorzoneroides autumnalis)

Miles Hearn

1 thought on “Fall-dandelion (Scorzoneroides autumnalis)

  1. Ray Sauder

    I first noticed autumn hawkbit in Craigleith near Collingwood and later in Guelph at several locations such as Guelph Lake Park. I have transplanted a large number of plants to my lawn and am totally facinated by them. They are like a gentler, more forgiving, less brash and intrusive dandelion while still having pretty yellow flowers! In Craigleith, there were NO dandelions in hawkbit lawns. In Guelph, there are dandelions on the edges of hawkbit lawns. In Kitchener where I live, I have found none so far.

    So my question is this: they grow fine in my yard when transplanted there 3 years ago, so likely not a soil problem in Kitchener. Is one or both allelopathic to the other? Many references say dandelions are allelopathic. I have found no reference that says autumn hawkbit is and one reference that says it is not.

    I suspect the fight is over in Craigleith and on-going in Guelph. I suspect that the autumn hawkbit is inhibiting the dandelions, but that is also what I’m hoping for, so I may be biased in my evaluation. I don’t expect the hawkbit to be able to kill off mature dandelions, but I’m hoping they can prevent the emergence of seedlings from seeds blown in by all my neighbours. So I’m helping them get started by removing all the existing dandelions. It will take several years ’till I know for sure…..

    I’m encouraging 25 different flowering weeds in my lawn, but I can’t let dandelions loose or I will have nothing else in 5 years.

    Ray Sauder

    Reply

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