Rubus deliciosus |
Rubus lasiococcus |
|
---|---|---|
boulder raspberry, delicious raspberry |
dwarf bramble, hairy-fruit smooth dewberry, rough fruit berry, roughfruit raspberry |
|
Habit | Shrubs, 5–15(–20) dm, unarmed. | Herbs, 1–1.5 dm, unarmed. |
Stems | decumbent to erect, glabrous or sparsely short-hairy, eglandular or sparsely stipitate-glandular, not pruinose. |
creeping, flowering branches erect, sparsely hairy, eglandular or sparsely to moderately short-stipitate-glandular, not pruinose. |
Leaves | deciduous, simple; stipules lanceolate to narrowly ovate, 5–8(–14) mm; blade orbiculate to reniform, (1.5–)2–4(–5) × (2.5–)3–4.5(–7) cm, base shallowly cordate, 3–5(–7)-lobed, lobe apices broadly rounded to obtuse, margins doubly dentate, abaxial surfaces sparsely hairy, mostly along veins, sparsely stipitate-glandular. |
deciduous, simple or ternate; stipules broadly elliptic to ovate, 5–10 mm; leaflets 3(–5), blade reniform or orbiculate, terminal lobe or leaflets broadly obovate to obovate-cuneate, 1.5–4(–6) × 1.5–4(–6) cm, base cordate, 3(–5)-lobed, margins coarsely doubly dentate, apex rounded to acute, abaxial surfaces sparsely hairy on veins, eglandular. |
Inflorescences | 1-flowered. |
1–2-flowered. |
Pedicels | pubescent, sparsely to densely short- to long-stipitate-glandular. |
sparsely to moderately hairy, short-stipitate-glandular. |
Flowers | bisexual; petals white, obovate to ovate, 15–25(–30) mm; filaments filiform; ovaries glabrous, styles clavate, villous. |
bisexual; petals white, broadly elliptic to obovate to orbiculate, (5–)8–10(–12) mm; filaments filiform; ovaries densely hairy, styles filiform, glabrous. |
Fruits | dark purple, hemispheric, to 1 cm; drupelets 10–40, coherent, separating from torus. |
red, hemispheric, 1 cm; drupelets 5–15, weakly coherent, falling separately or as loose units free from torus. |
2n | = 14, 21. |
= 14. |
Rubus deliciosus |
Rubus lasiococcus |
|
Phenology | Flowering May–Aug. | Flowering May–Aug. |
Habitat | Rocky canyons, outcrops, stream banks | Moist to dry, semiopen forests, wet meadows, roadsides, dry sand |
Elevation | 1800–2900 m (5900–9500 ft) | 800–2000 m (2600–6600 ft) |
Distribution |
CO; NM; OK; WY
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CA; OR; WA; BC
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Discussion | Rubus deliciosus is recognized by its decumbent to erect, unarmed stems, relatively small simple leaves with obtuse to broadly rounded lobes, shallowly cordate bases, sparsely hairy abaxial surfaces, large flowers, white petals, glabrous or sparsely hairy sepals, and densely villous clavate styles. The distinction between R. deliciosus and R. neomexicanus is not always clear, especially when the former has more narrowly obtuse lobes and denser leaf abaxial hairs. Rubus deliciosus is also similar to R. bartonianus of Idaho and Oregon, as well as the Mexican R. trilobus Seringe. It might be reasonable to recognize a broader concept of R. deliciosus, one containing multiple infraspecific. Rubus deliciosus and its close relatives require a revisionary study. Rubus deliciosus has long been planted for its ornamental value because of its large, showy flowers. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Rubus lasiococcus is recognized by its creeping, unarmed stems, simple 3-lobed to 3-foliate leaves, small flowers, white petals, and densely hairy ovaries. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 39. | FNA vol. 9, p. 44. |
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Rubeae > Rubus | Rosaceae > subfam. Rosoideae > tribe Rubeae > Rubus |
Sibling taxa | ||
Synonyms | R. medius, R. roezlii | |
Name authority | Torrey: Ann. Lyceum Nat. Hist. New York 2: 196. (1827) | A. Gray: Proc. Amer. Acad. Arts 17: 201. (1882) |
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