Flora Pittsburghensis

Wild flowers of Pittsburgh and western Pennsylvania


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Wood Nettle (Laportea canadensis)

Laportea canadensisPhotographed August 17.

One of the stinging nettles, so don’t touch it; but it is a very decorative plant in the deep woods, where its foamy eruptions of tiny flowers—sterile below, fertile at the top of the plant—make a curious and interesting sight. The large oval leaves with stinging hairs distinguish it from any other local nettles.

More at the full article on Laportea canadensis.


Garden Phlox (Phlox paniculata)

Photographed August 15

We have added several new pictures to the page for Phlox paniculata from a patch growing by Saw Mill Run in the Seldom Seen Greenway.





Biennial Gaura (Oenothera gaura)

Photographed August 17.

A tall member of the Evening Primrose family (Onagraceae) distinguished by its spindly flowers with prominent stamens. It was formerly classified in its own genus as Gaura biennis. It is not a common flower around here, but it is very adaptable in its habitat. These were blooming in the Kane Woods Nature Area, Scott Township, in a clearing near a woodland stream. Some botanical sources, on the other hand, say that Gauras like dry soil best.


American Bellflower (Campanula americana)

Photographed August 15.

Also known as Campanulastrum americanum by botanists who consider it a fake Campanula. A very tall bellflower usually found in damp areas; these were growing by Saw Mill Run in Seldom Seen. In addition to its height, the long white pistils with curled ends are distinctive. The blooming season begins in June or July, and the plants continue flower off and on until fall. In Father Pitt’s experience, it is neither rare nor common.

More at the full article on Campanula americana.


Orange Touch-Me-Not (Impatiens capensis)

Impatiens capensis

Two close-up pictures of the flowers have been added to the species page for Impatiens capensis.

Impatiens capensis


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