Rubus bartonianus
Rubus illecebrosus
Barton's raspberry, bartonberry
strawberry raspberry
erect, sparsely short-hairy, glabrescent, eglandular, not pruinose.
annual, arching to mounding, glabrous, eglandular, not pruinose;
prickles sparse, slightly hooked, stout, 3–4 mm, broad-based.
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.
deciduous, pinnately compound;
stipules lanceolate to oblanceolate, 8–13 mm;
leaflets (3–)5–7, terminal lanceolate to narrowly ovate, (5.5–)6.2–8.5(–9.7) × (1.8–)2.2–3(–4.2) cm, base usually rounded, sometimes truncate to subcordate, unlobed, margins finely to coarsely doubly serrate, apex acuminate, abaxial surfaces with prickles on midvein, glabrous, eglandular.
1-flowered.
solitary flowers or 2–3-flowered clusters.
moderately hairy, eglandular or sparsely stipitate-glandular.
prickles sparse, slightly hooked, glabrous, eglandular.
bisexual;
petals white, obovate, (15–)20–25 mm;
filaments filiform;
ovaries glabrous, styles clavate, villous.
bisexual;
petals white, broadly obovate to suborbiculate, 12–15(–18) mm;
filaments laminar;
ovaries glabrous, styles glabrous.
deep red, hemispheric, to 1 cm;
drupelets 10–30, coherent, separating from torus.
red, oblong, 1.4–2 cm;
drupelets 50–100, strongly coherent, separating from torus.
= 14.
Rubus bartonianus
Rubus illecebrosus
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.)
Rubus illecebrosus is distinguished from other raspberries by its prickly, glabrous, eglandular stems, pinnately compound leaves with typically seven lanceolate to narrowly ovate leaflets, relatively large flowers, white petals, and 50–100 drupelets.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
Go Botany
MN Wildflowers
