The Toronto area has two members of the Impatiens or Touch-me-not (Jewelweed) family.
In Newcomb’s Wildflower Guide (1977), these are the only two members of the Impatiens family which are described.
Since that time, an Impatiens with a much larger flower had started to appear in the wild. Likely it originated as a planted ornamental.
The plant is called Himalayan Balsam or Asian Touch-me-not (Jewelweed) and has become so common that it is considered an invasive and is often removed from natural sites. I found many examples during a recent Don Valley area walk:
Information which looks interesting of this female ornithologist
Florence Merriam Bailey – Wikipedia
Bright, bright, restless bright, through the sunburnt meads,
Wavers the butterfly;
Ever across its path a pilot invisible leads
A sylphid fleet of the thistle’s light and feathery seeds,
And August passeth by. – Edith Matilda Thomas (1854–1925)
I seem to recall using jewelweed (with a 4, 6 or 8 sided stalk ?) as a remedy for itch. Does that sound likely ? What are the negative implications of Jewelweed other than its foreign origin ?