Flora Pittsburghensis

Wild flowers of Pittsburgh and western Pennsylvania


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Indian Hemp (Apocynum cannabinum)

Apocynum cannabinum

A tidy plant easily mistaken for a small shrub, especially when it grows at the edge of the woods with the rest of the undergrowth. It belongs to the same family that gives us our garden periwinkles. The red stem and smooth, elliptical leaves give the plant an elegant appearance, and the little flowers look as though they were made from the finest porcelain. The plant is poisonous, however; the name “dogbane” attaches itself to the whole family for good reason. The blooming season begins in June and extends into July. These plants were blooming in the middle of June on a roadside in Banksville.

Apocynum cannabinum

More at the full article.


Appendaged Waterleaf (Hydrophyllum appendiculatum)

Hydrophyllum appendiculatum

A somewhat uncommon plant in western Pennsylvania. It blooms from May into early June. To judge by the way it grew here in Beechview, it likes moist soil at the edge of the woods. The family resemblance to the more common Virginia Waterleaf is obvious, but the flowers of Appendaged Waterleaf are a middle blue or blue-violet color, and the leaves are maple-shaped.

Hydrophyllum appenduiculatum

Hydrophyllum appendiculatum

More at the full article.


English Bluebells (Hyacinthoides non-scripta)

Hyacinthoides non-scripta

These pretty little flowers are not recorded as growing in the wild around here, but this plant grew spontaneously in the city in a place where English Bluebells had not previously been planted. The arched stem, dangling blue-violet bells, and yellow stamens distinguish this from any similar species. (More at the full article.)


Wake-Robin (Trillium erectum), White Form

Trillium erectum

This year’s Trillium erectum at Bird Park, Mount Lebanon. The patch may be dwindling there; there seem to be fewer plants than in previous years.

Trillium erectum

Wild Geranium (Geranium maculatum).

Geranium maculatum

Geranium maculatum

Also known as Cranesbill, because of the distinctive seedpods that look like the head of a long-billed bird. The “bill” is an ingenious spring-loaded mechanism that, when the pod dries, suddenly releases and flings the seeds into the air with amazing force. The five-petaled flowers come in shades of pink ranging from lavender to deep rose.

Wild Geranium is a popular garden perennial for shady yards; its close relatives, the florists’ geraniums (which have similar crane’s-bill seedpods), are placed in the genus Pelargonium by botanists. They bloom from late April through May. (More at the full article.)


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