Rubus arcticus

Herbs, 0.5–3 dm, unarmed. Stems erect, thin, weak, ± woody basally, glabrous or sparsely hairy, eglandular, not pruinose. Leaves 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. Inflorescences axillary, 1–3-flowered. Pedicels glabrous or sparsely to moderately pubescent, eglandular or stipitate-glandular. Flowers 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. Fruits reddish to dark purple, globose, to 1 cm diam., rarely larger; drupelets (10–)15–30, weakly coherent, separating with torus attached.

Distribution

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• Legacy Map

North America, Eurasia.

Discussion

Subspecies 3 (3 in the flora).

Selected References

None.

Lower Taxa

Rubus arcticus subsp. acaulis, Rubus arcticus subsp. arcticus, Rubus arcticus subsp. stellatus

Key

1	Leaves simple, usually 3-lobed.	Rubus arcticus 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.	Rubus arcticus subsp. arcticus
2	Central leaflets ovate to obovate, bases cuneate, apices usually rounded; flowers solitary; petals oblanceolate to obovate, apex slightly to strongly emarginate.	Rubus arcticus subsp. acaulis