Difference between revisions of "Rubus arcticus"
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Revision as of 22:56, 5 November 2020
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
Alta., B.C., Man., N.W.T., Nunavut, Ont., Que., Sask., Yukon, Alaska, Colo., Maine, Mich., Minn., Mont., Oreg., Wash., Wyo., Eurasia.
Discussion
Subspecies 3 (3 in the flora).
Selected References
None.
Lower Taxa
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 |