Rubus odoratus
Rubus bartonianus
flowering raspberry, purple flowering raspberry, ronce odorante
Barton's raspberry, bartonberry
erect, sparsely to moderately hairy, moderately to densely stipitate-glandular, glands dark purple, not pruinose.
erect, sparsely short-hairy, glabrescent, eglandular, not pruinose.
deciduous, simple;
stipules lanceolate to ovate, 5–15 mm;
blade subrotund to reniform, 9–20(–30) × (10–)15–25(–30) cm, base cordate, palmately, ± deeply, (3–)5-lobed, margins finely, irregularly serrate to doubly serrate, apex acute to acuminate, abaxial surfaces sparsely to moderately hairy, sparsely to densely stipitate-glandular, glands dark purple.
deciduous, simple;
stipules lanceolate, 4–6 mm;
blade cordate to broadly ovate, (2–)2.5–4(–5) × (2.5–)3.5–4.5(–5.5) cm, base deeply cordate, 3–5-lobed, lobe apices acute to obtuse, margins coarsely doubly dentate, abaxial surfaces glabrous or sparsely hairy, eglandular or sparsely stipitate-glandular.
terminal and axillary, 4–7(–22)-flowered, cymiform to thyrsiform.
1-flowered.
pubescent, moderately to densely stipitate-glandular, glands dark purple.
moderately hairy, eglandular or sparsely stipitate-glandular.
bisexual;
petals usually magenta, rarely white, broadly obovate to suborbiculate, (12–)17–25(–30) mm;
filaments filiform;
ovaries distally densely hairy, styles clavate, glabrous.
bisexual;
petals white, obovate, (15–)20–25 mm;
filaments filiform;
ovaries glabrous, styles clavate, villous.
pale to dark red, hemispheric, 0.7–1.5 cm;
drupelets 30–60, coherent, separating from torus.
deep red, hemispheric, to 1 cm;
drupelets 10–30, coherent, separating from torus.
= 14.
Rubus odoratus
Rubus bartonianus
Rubus odoratus is introduced in Washington State. The species is distinguished from other flowering raspberries by its erect, unarmed stems, simple leaves, large flowers, magenta petals, glabrous, clavate styles, and purple stipitate glands densely covering most plant parts. A hybrid with R. nutkanus (R. ×fraseri Rehder) is thought to occur in areas of overlap in northern Michigan (E. G. Voss 1972–1996, vol. 2).
The Cherokee used leaf infusions for labor pains and the Iroquois used plant infusions for miscarriage (P. Bergner 1997). Rubus odoratus is grown as an ornamental for its relatively large flowers and magenta petals and its edible fruits that are somewhat dry and insipid.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Rubus bartonianus is distinguished from the other flowering raspberries within its geographic range by its erect, unarmed stems, relatively small, simple leaves with acute to obtuse lobes, deeply cordate bases, sparsely hairy or glabrous abaxial surfaces, relatively large flowers with white petals, and densely long-hairy, clavate styles. The leaves superficially resemble those of Acer glabrum or some species of Ribes.
Rubus bartonianus is most similar to R. neomexicanus but especially R. deliciosus. The species is known only from the Snake River Canyon of Idaho and Oregon.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Flora NW
Go Botany
IL Wildflowers
MD Biodiversity
MI Flora
MO Plants
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
OR
