Rubus ursinus Chamisso & Schlechtendal (Q4157)
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Rubus ursinus is a taxon with the rank species within the genus Rubus
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Rubus ursinus Chamisso & Schlechtendal
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Rubus ursinus is a taxon with the rank species within the genus Rubus
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Statements
taxon/id/Rubus ursinus Chamisso & Schlechtendal
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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
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California or Pacific or creeping blackberry (English)
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CA-BC
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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.
CA-BC
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US-CA
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US-ID
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US-MT
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US-OR
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US-WA
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Shrubs, usually dioecious, to 2 dm, armed.
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Stems biennial, creeping (often growing over other vegetation), sparsely to densely hairy, eglandular or sparsely to densely sessile to stipitate-glandular, usually strongly pruinose;
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prickles moderate to dense, erect to retrorse or hooked, weak to moderately stout, 4–10 mm, narrow to broad-based.
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Leaves deciduous or persistent, usually ternate, sometimes simple or pinnately compound;
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stipules filiform to linear, 7–17 mm;
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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.
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Inflorescences terminal on short-shoots, usually appearing axillary, 1–5-flowered, cymiform or racemiform.
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Pedicels: prickles moderate to dense, erect, densely hairy, eglandular or sparsely to densely stipitate-glandular.
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Flowers usually functionally unisexual;
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petals white, in staminate flowers ovate or obovate to narrowly elliptic, 7–18 mm, in pistillate ovate to elliptic, 6–11 mm;
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filaments filiform;
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ovaries glabrous or hairy.
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Fruits black, sometimes red or purple, rarely white, not pruinose, globose to cylindric, 1–2.5 cm;
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drupelets 20–50, strongly coherent, separating with torus attached.
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2n = 42, 56, 63, 70, 77, 84, 91.
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eglandular or
sparsely densely sessile
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rounded
cordate shallowly sharp-lobed or unlobed
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rounded
cordate shallowly sharp-lobed or unlobed
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stipitate-glandular
sparsely to densely
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