Northern Prairie Wildlife Research Center
Southern Wetland Flora
Field Office Guide to Plant Species
Rubus argutus Link
- Family: Rose (Rosaceae)
- Flowering: April-June
- Field Marks: This blackberry differs from other arching species by lacking gland-tipped hairs
on the flower stalk and by its small petals up to 2/3 inch long.
- Habitat: Wet woods, damp thickets, fencerows.
- Habit: Shrub with thickened roots.
- Stems: Upright or arching, branched, up to 10 feet long, smooth or hairy, with stout, straight,
or hooked prickles.
- Leaves: Alternate, divided into 3 or 5 leaflets; leaflets ovate to elliptic, pointed at the tip, usually
rounded at the base, toothed, smooth on the upper surface, densely hairy on the lower surface,
up to 5 inches long.
- Flowers: Few in a terminal raceme, the branches of the raceme hairy and prickly; flowers up
to 1 inch across.
- Sepals: 5, green, pointing downward, up to 1/4 inch long.
- Petals: 5, white, free from each other, up to 2/3 inch long.
- Stamens: Numerous.
- Pistils: Numerous; ovaries superior.
- Fruits: Clusters of closely packed drupelets, black, juicy, the entire fruits up to 1 inch long.
- Notes: The fruits of this blackberry are edible.
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