Rubus ursinus

Shrubs, usually dioecious, to 2 dm, armed. Stems biennial, creeping (often growing over other vegetation), sparsely to densely hairy, eglandular or sparsely to densely sessile- to stipitate-glandular, usually strongly pruinose; prickles moderate to dense, erect to retrorse or hooked, weak to moderately stout, 4–10 mm, narrow- to broad-based. Leaves deciduous or persistent, usually ternate, sometimes simple or pinnately compound; stipules filiform to linear, 7–17 mm; leaflets 3(–5), terminal ovate to lanceolate, 3.5–12 × 3–10 cm, base cuneate or rounded to cordate, shallowly sharp-lobed or unlobed, margins coarsely serrate to doubly serrate, apex acute to acuminate, abaxial surfaces with slender, erect prickles on larger veins, moderately to densely hairy, eglandular, rarely sparsely sessile-glandular along midvein. Inflorescences terminal on short shoots, usually appearing axillary, 1–5-flowered, cymiform or racemiform. Pedicels: prickles moderate to dense, erect, densely hairy, eglandular or sparsely to densely stipitate-glandular. Flowers usually functionally unisexual; petals white, in staminate flowers ovate or obovate to narrowly elliptic, 7–18 mm, in pistillate ovate to elliptic, 6–11 mm; filaments filiform; ovaries glabrous or hairy. Fruits black, sometimes red or purple, rarely white, not pruinose, globose to cylindric, 1–2.5 cm; drupelets 20–50, strongly coherent, separating with torus attached. 2n = 42, 56, 63, 70, 77, 84, 91.

Water moderately, allowing the top 3cm to dry out between watering.

Rubus Ursinus

Rubus ursinus

Gallery

Share With Your Friends

How to Grow

Characteristics

Benefits

Attracts

More Info

Taxonomy