Allegneny Blackberry, (Common blackberry, Allegheny blackberry, Rubus allegheniensis Porter, Native Minnesota Wildflower plant, Eloise Butler Wildflower Garden

	Plants of the Eloise Butler Wildflower Garden
	Common Name	Scientific Name	Plant Family	Garden Location	Prime Season
	Allegheny Blackberry	Rubus allegheniensis Porter	Rose	Woodland and Upland	Late Spring to Early summer
Other names and notes	(Common blackberry). The 5-part white flowers are large, around 1" wide with the petals longer than the sepals. The flowers are on stalks in a rather showy raceme with the fruits turning black when mature. Fruits are longer than wide. The stems are erect to arching, with thorns that are large and nearly straight. The leaflets are 3 - 5 parted with teeth. Bloom begins in late May and can continue till July. The Common Blackberry has been subdivided by botanists into a number of species.


Below L & R: The thorns and green fruit of early July.	Above right and left: The flowers, leaves and developing fruit - late May.


Above Right: Maturing fruit beginning to turn black in early August. (Joe-Pye Weed in the background). Above Left: A few remaining mature berries in late August. Below: Flowers and forming fruit at the end of May.

Notes: This plant is indigenous to the Garden area. Eloise Butler catalogued it on April 29, 1907. In Minnesota the plant is native to the eastern part of the state, reported in counties along the Mississippi River south of the Metro area and in a large block of counties making up the NE Quadrant of the state except for the Arrowhead.

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References: Plant characteristics are generally from sources 15, 16, 30, 31, 33, W2 & W3. Distribution principally from W2 and also 31, 34 and W1. Planting history generally from 1, 4 & 4a. Other sources by specific reference. See Reference List for details.

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