Rubus arcticus
arctic blackberry, arctic raspberry, dwarf nagoonberry, nagoonberry
erect, thin, weak, ± woody basally, glabrous or sparsely hairy, eglandular, not pruinose.
deciduous, simple and usually 3-lobed or ternate;
stipules ovate to lanceolate, 4–8 mm;
blade margins dentate, serrate, or doubly serrate, abaxial surfaces sparsely to moderately pubescent, eglandular.
axillary, 1–3-flowered.
glabrous or sparsely to moderately pubescent, eglandular or stipitate-glandular.
bisexual;
petals pink to rose or magenta, obovate to oblanceolate, 8–25 mm;
outer filaments dilated basally, inner filiform;
ovaries glabrous or sparsely hairy, styles filiform.
reddish to dark purple, globose, to 1 cm diam., rarely larger;
drupelets (10–)15–30, weakly coherent, separating with torus attached.
Rubus arcticus
Subspecies 3 (3 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaves simple, usually 3-lobed. | subsp. stellatus |
1. Leaves usually ternate | → 2 |
2. Central leaflets ovate to rhombic, bases rounded to attenuate, not cuneate, apices usually acute; flowers 1–3; petals obovate, apex entire or slightly emarginate. | subsp. arcticus |
2. Central leaflets ovate to obovate, bases cuneate, apices usually rounded; flowers solitary; petals oblanceolate to obovate, apex slightly to strongly emarginate. | subsp. acaulis |
BC
WA
Flora NW
MI Flora
MN Wildflowers
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
