Rubus allegheniensis |
Rubus arcticus |
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Allegheny blackberry, common blackberry |
nagoonberry |
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Habit | Strongly rhizomatous perennial with erect, herbaceous, soft-hairy, annual flowering stems 2-15 cm. tall. | |
Leaves | Leaves 2-5 per stem, with conspicuous ovate-lanceolate, entire stipules; leaf blades trifoliate, the leaflets ovate to obovate, 1.5-3 cm. long, serrate to bi-serrate. |
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Flowers | Flowers terminal, usually single, rarely 2; calyx finely pubescent, the 5 lobes narrowly lanceolate, reflexed, 8-11 mm. long; petals 5, erect, pink to crimson or rose, spatulate-obovate, 10-16 mm. long; stamens 30-40; pistils 20-30, the style enlarged upward. |
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Fruits | Drupelets coherent, coming free of the receptacle, the fruit reddish, globose, 1 cm. broad. |
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Rubus allegheniensis |
Rubus arcticus |
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Flowering time | June-July | June-August |
Habitat | Damp thickets, peatlands, and forest openings. | Montane meadows, bogs, and woodlands to alpine tundra. |
Distribution | Occurring west of the Cascades crest in Washington; southwestern British Columbia to Washington and California (but apparently not Oregon), east to Idaho; also from the central Great Plains to eastern North America.
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Occurring east of the Cascades crest in north-central Washington; Alaska to Oregon, east to the Rocky Mountains, and east across Canada to the Great Lakes Region and the northern Atlantic Coast.
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Origin | Introduced from central and eastern North America | Native |
Conservation status | Not of concern | Threatened in Washington (WANHP) |
Sibling taxa | ||
Web links |