Three Jewelweed Species, a Few Aster Species and Other Sights in Glendon Forest, Late Summer

Just north of Sunnybrook Park, the Don River flows through Glendon Forest which is near Glendon College, York University.

On this second week of September, three Jewelweed species are in flower.

Spotted Jewelweed (Impatiens capensis)

Members of the Impatiens family, jewelweeds are also called Touch-me-nots. This is due to the explosive quality of the seed pods in fall when they are touched.

Spotted Jewelweed (Impatiens capensis)

Spotted Jewelweed is found in swamps, streamsides, ditches, lake shores, marshy areas, thickets, ravines and wet spots in forests.

Pale Jewelweed grows in some of the same environments but is not as common.

Pale Jewelweed (Impatiens pallida)

Pale Jewelweed (Impatiens pallida)

Pale Jewelweed (Impatiens pallida)

By far the largest of the jewelweeds, Purple Jewelweed or Himalayan Balsam is a native of the Himalayans and was originally planted in gardens. It has become seriously invasive and is frequently removed.

Himalayan Balsam (Impatiens grandulifera)

Himalayan Balsam (Impatiens grandulifera)

Himalayan Balsam (Impatiens grandulifera

Himalayan Balsam (Impatiens grandulifera) paler flowers

Himalayan Balsam (Impatiens grandulifera)

Several Aster species were also in flower.

New England Aster (Symphyotrichum novae-angliae)

Asters were formally in the genus Aster but scientists have created a new genus for them: Symphyotrichum.

Purple-stemmed Aster is found in the edges of moist forests, marshes, swamps and other wettish environments.

Purple-stemmed Aster (Symphyotrichum puniceum)

Panicled Aster is one of the most common species and is often found in moist open ground although it can also grow in dryer environments such as along roadsides.

Panicled Aster (Symphyotrichum lanceolatum)

Flat-topped White Aster is no longer classified as an Aster, but is in the genus Doellingeria.

Flat-topped White Aster (Doellingeria umbellata)

The most obvious tall grass at this time of year is Barnyard Grass.


Barnyard Grass (Echinochloa crusgalli)

Chicory is found along the trails.

Chichory (Cichorium intybus)

Jerusalem Artichoke

Jerusalem Artichoke (Helianthus tuberosus)

Flat-topped Goldenrod

Flat-topped Goldenrod (Euthamia graminifolia)

Nodding Beggar-ticks (also called Nodding Bur Marigold)

Nodding Beggar-ticks (Bidens cernua)

Purple Loosestrife

Purple Loosestrife (Lythrum salicaria)

and False Solomon-seal in fruit.

False Solomon-seal (Maianthemum racemosum)

I heard or saw a few bird species: Warbling Vireo, Gray Catbird, American Robin, Pileated Woodpecker, Mallards and this Green Heron:

Green Heron

Green Heron

Miles Hearn




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