Rubus ursinus Chamisso & Schlechtendal (Q4157)

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Rubus ursinus is a taxon with the rank species within the genus Rubus
Language Label Description Also known as
English
Rubus ursinus Chamisso & Schlechtendal
Rubus ursinus is a taxon with the rank species within the genus Rubus

    Statements

    taxon/id/Rubus ursinus Chamisso & Schlechtendal
    0 references
    Rubus ursinus Chamisso & Schlechtendal
    Rubus ursinus
    Chamisso & Schlechtendal
    FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
    accepted
    ronce à grands pétales (French)
    Pacific blackberry (English)
    Pacific trailing blackberry (English)
    California blackberry (English)
    Pacific dewberry (English)
    California dewberry (English)
    California or Pacific or creeping blackberry (English)
    1 reference
    Douglas, G.W., G.B. Straley, D.V. Meidinger & J. Pojar. 1998. Illustrated Flora of British Columbia. B.C. Ministry of Environment, Lands & Parks and B.C. Ministry of Forests. Victoria. Crown Publications. 8 vols.
    Mexico (Baja California)
    Flowering (Jan–)Mar–Aug(–Sep).
    woodlands
    shrublands
    disturbed areas
    dry to damp soil
    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.