Rubus spectabilis |
Rubus trivialis |
|
---|---|---|
salmon berry |
southern dewberry |
|
Habit | Shrubs, 10–40 dm, usually armed. | Shrubs, to 3(–7) dm, sometimes climbing higher through other vegetation, moderately to densely armed. |
Stems | erect to arching, glabrate or sparsely to densely hairy, eglandular or sparsely short-stipitate-glandular, rarely densely long-stipitate-glandular, not pruinose; bark usually papery with age, peeling (especially toward base); prickles absent or sparse to dense, erect, slender, 1–5 mm, broad- to narrow-based. |
biennial, initially low-arching, then falling and creeping (or climbing through other vegetation), glabrous or moderately hairy, sparsely to densely short- to long-stipitate-glandular, not pruinose; prickles moderate to dense, recurved, sometimes distally slender, 1–4 mm, broad-based; bristles absent or sparse to dense, erect to retrorse, red to purple, rarely green, slender, weak, gland-tipped. |
Leaves | deciduous, ternate; stipules filiform to linear, 3–10 mm; terminal leaflets ovate, 4–15 × 3.5–15 cm, base truncate, rounded to shallowly cordate, shallowly, sharply lobed, margins coarsely serrate to doubly serrate, apex acute to acuminate, abaxial surfaces unarmed or with erect prickles on midvein, moderately to densely hairy, eglandular, rarely stipitate-glandular along midvein. |
persistent or semipersistent, ternate to palmately compound, lustrous; stipules filiform, linear, or lanceolate, 2–12(–15) mm; leaflets 3–5, terminal narrowly elliptic or ovate to obovate, 2–8.5 × 0.7–4.5 cm, base rounded to cuneate, unlobed, margins moderately to coarsely serrate to doubly serrate, apex acute to acuminate, abaxial surfaces with hooked prickles on midvein, glabrous or sparsely to moderately hairy, eglandular or sparsely short-stipitate-glandular along central vein. |
Inflorescences | terminal and axillary, 1–2-flowered. |
terminal on short shoots, usually appearing axillary, 1(–3)-flowered. |
Pedicels | unarmed or prickles sparse, erect, moderately to densely hairy, eglandular, rarely short-stipitate-glandular. |
prickles and, often, bristles moderate to dense, recurved, moderately to densely hairy, sparsely to moderately sessile- to short-stipitate-glandular. |
Flowers | bisexual; petals pink to magenta, broadly to narrowly obovate, 10–30 mm; filaments laminar; ovaries glabrous. |
bisexual; petals white to pink, elliptic to obovate, 10–16(–25) mm; filaments filiform; ovaries glabrous. |
Fruits | yellow, orange, or red, globose to ovoid, 1–2 cm; drupelets 20–80, strongly coherent, separating from torus. |
black, globose to ovoid, 1–1.5(–2) cm; drupelets 10–50, strongly coherent, separating with torus attached. |
2n | = 14. |
= 14. |
Rubus spectabilis |
Rubus trivialis |
|
Phenology | Flowering (Feb–)Mar–Jul. | Flowering Jan–Jun. |
Habitat | Woodlands, woodland edges, bogs, shorelines, roadsides, disturbed areas, moist to wet soil | Open woodlands, savannas, prairies, meadows, sand dunes, disturbed areas, dry to seasonally wet soil |
Elevation | 0–2000 m (0–6600 ft) | 0–200 m (0–700 ft) |
Distribution |
AK; CA; ID; OR; WA; BC; e Asia (Japan) [Introduced in Europe]
|
AL; AR; FL; GA; IL; KS; KY; LA; MO; MS; NC; OK; SC; TN; TX; VA; Mexico (Coahuila, Nuevo León, Tamaulipas)
|
Discussion | Rubus spectabilis is a thicket-forming shrub that has relatively large and desirably edible fruit. The species is used as an ornamental primarily for its robust, showy flowers and is naturalized in parts of western Europe. It is sister to the Hawaiian endemic R. hawaiiensis A. Gray. See discussion under 36. R. ursinus for the uncertain application of the name R. menziesii Hooker. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Rubus trivialis is distinguished from other species of Rubus by its frequently glandular-bristly and generally creeping stems, abundant recurved prickles, and typically persistent or semipersistent, lustrous primocane leaves with relatively narrow leaflets. Although emerging primocanes typically reach to 30 cm above the ground, vigorous plants can have new primocanes standing erect to 70 cm that later fall to the ground or onto adjacent vegetation as they continue to enlarge. L. H. Bailey (1941–1945) believed that there was no clear separation between members of sect. Persistentes Fernald (referred to by Bailey as sect. Verotriviales [illegitimate sectional name for R. trivialis and associated species]) and sect. Procumbentes (by Bailey as sect. Flagellares; including R. flagellaris and related species). All characteristics that he recognized for distinguishing sect. Persistentes from sect. Procumbentes are often present in the latter, with the exception of hispid-setose stems, and glabrous plants of R. trivialis are difficult to distinguish from some plants of R. flagellaris; to include the latter species within the former would be reasonable. Rubus ×inferior L. H. Bailey is a putative hybrid of R. trivialis and R. cuneifolius. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 53. | FNA vol. 9, p. 54. |
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Rubeae > Rubus | Rosaceae > subfam. Rosoideae > tribe Rubeae > Rubus |
Sibling taxa | ||
Synonyms | R. franciscanus, R. spectabilis var. franciscanus | R. agilis, R. continentalis, R. duplaris, R. ictus, R. lucidus, R. macvaughii, R. mirus, R. nessianus, R. riograndis, R. rubrisetus, R. sons, R. tallahasseanus |
Name authority | Pursh: Fl. Amer. Sept. 1: 348, plate 16. (1813) | Michaux: Fl. Bor.-Amer. 1: 296. (1803) |
Web links |
|