Rubus odoratus |
Rubus nivalis |
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flowering raspberry, purple flowering raspberry, ronce odorante |
dwarf snow bramble, snow bramble, snow dewberry, snow dwarf bramble, snow raspberry |
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Habit | Shrubs, 10–20 dm, unarmed. | Shrubs, to 1.5 dm, armed. |
Stems | erect, sparsely to moderately hairy, moderately to densely stipitate-glandular, glands dark purple, not pruinose. |
perennial, creeping, sparsely hairy, glabrescent, eglandular, not pruinose; prickles sparse, strongly retrorse, stout, to 1 mm, broad-based. |
Leaves | 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. |
evergreen, simple or ternate; stipules adnate to petioles, broadly elliptic to ovate, (6–)8–10 mm; blade ovate to cordate, (2.5–)3–5(–8) cm, lobe or leaflet base cordate, shallowly 3-lobed, margins coarsely, singly or doubly dentate, apex acute to obtuse, abaxial surfaces with prickles along midveins, glabrous or sparsely hairy, eglandular, both surfaces lustrous fresh. |
Inflorescences | terminal and axillary, 4–7(–22)-flowered, cymiform to thyrsiform. |
1–2-flowered. |
Pedicels | pubescent, moderately to densely stipitate-glandular, glands dark purple. |
prickles scattered, retrorse, moderately to densely hairy, eglandular. |
Flowers | 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 magenta to pink, elliptic to oblanceolate or spatulate, (5–)8–10 mm; filaments filiform; ovaries moderately hairy, styles glabrous. |
Fruits | pale to dark red, hemispheric, 0.7–1.5 cm; drupelets 30–60, coherent, separating from torus. |
red, hemispheric, 0.4–1 cm; drupelets 3–10, not coherent, separating from torus. |
2n | = 14. |
= 14. |
Rubus odoratus |
Rubus nivalis |
|
Phenology | Flowering May–Jul. | Flowering Jun–Sep. |
Habitat | Moist shady sites in deciduous forests, margins of woods, rocky slopes, wooded talus, stream banks, roadsides | Moist, semishaded forests, glades, moist soil, logged areas |
Elevation | 10–1500 m (0–4900 ft) | 0–1700 m (0–5600 ft) |
Distribution |
AL; CT; DC; DE; GA; IL; IN; KY; MA; MD; ME; MI; MO; NC; NH; NJ; NY; OH; PA; RI; TN; VA; VT; WA; WI; WV; NB; ON; QC [Introduced in Europe]
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CA; ID; OR; WA; BC
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Discussion | 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.) |
Rubus nivalis is recognized by its creeping, prickly stems, simple to ternate, evergreen leaves, broadly elliptic to ovate stipules, two leaflets, relatively small flowers, and magenta to pink petals. Its closest relative is likely the Mexican R. pumilus Focke. Asian species previously classified in subg. Chamaebatus (Focke) Focke are hexaploid (M. M. Thompson 1997) and not phylogenetically close; R. nivalis appears to be sister to all blackberries of subg. Rubus (L. A. Alice and C. S. Campbell 1999; Alice et al. 2008). The fruits of Rubus nivalis are eaten fresh, stewed, and canned by the Hoh and Quileute Indians (A. B. Reagan 1936). The only known specimen of Rubus nivalis from California was collected in 1961 from Del Norte County at 1250 m near the Oregon border. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 47. | FNA vol. 9, p. 45. |
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Rubeae > Rubus | Rosaceae > subfam. Rosoideae > tribe Rubeae > Rubus |
Sibling taxa | ||
Synonyms | Rubacer odoratum, R. odoratus var. albidus, R. odoratus var. columbianus | |
Name authority | Linnaeus: Sp. Pl. 1: 494. (1753) | Douglas: in W. J. Hooker, Fl. Bor.-Amer. 1: 181. (1832) |
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