Northern Prairie Wildlife Research Center
Southern Wetland Flora
Field Office Guide to Plant Species
Rubus flagellaris Willd.
- Family: Rose (Rosaceae)
- Flowering: April-June
- Field Marks: This blackberry has stems that trail along the ground and that have sharp prickles
but no stiff hairs.
- Habitat: Prairies, thickets, open woods, roadsides.
- Habit: Trailing shrub with many stout, hooked prickles.
- Stems: Lying flat on the ground, up to 4 feet long.
- Leaves: Alternate, palmately divided in 3, 5, or less commonly 7 leaflets; each leaflet broadly
lanceolate to ovate, pointed at the tip, narrowed or rounded at the base, toothed, usually hairy, up
to 2 inches long; the stalks usually have some prickles.
- Flowers: Solitary or few in terminal racemes, up to 1 1/4 inches across, usually on prickly stalks.
- Sepals: 5, green, free from each other.
- Petals: 5, white, free from each other, up to 3/4 inch long.
- Stamens: Numerous.
- Pistils: Many, crowded together; ovaries superior.
- Fruits: Black, juicy, up to 1 1/4 inches long, composed of many spherical drupelets.
- Notes: This is one of the tastiest wild species of blackberries.
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