Rubus saxatilis

Linnaeus

Sp. Pl. 1: 494. 1753.

Common names: Stone bramble
Treatment appears in FNA Volume 9. Treatment on page 52. Mentioned on page 32.

Herbs or subshrubs, to 4 dm, armed or unarmed. Stems usually creeping, ± woody basally, sparsely to densely hairy, eglandular, not pruinose; prickles absent or sparse, erect, weak, 1–3 mm, narrow-based. Leaves deciduous, ternate; stipules free from petioles, lanceolate to ovate or elliptic, 6–11 mm; petiole 2–11 cm; petiolule of terminal leaflet 8–20 mm; lateral leaflet sessile or subsessile; terminal leaflets ovate to elliptic, 4–8 × 3–7 cm, base tapered, unlobed, lateral leaflets sometimes shallowly lobed, margins coarsely doubly serrate, apex acute, abaxial surfaces unarmed, sparsely hairy, eglandular. Inflorescences axillary, 1–6-flowered, cymiform or umbelliform. Pedicels unarmed or prickles weak, erect, hairy, eglandular or sparsely stipitate-glandular. Flowers bisexual; petals greenish white, narrowly obovate, 5.5–7 mm; filaments laminar; ovaries glabrous. Fruits red, globose, 0.5–1.5 cm; drupelets 1–10, not or weakly coherent, separating with torus attached. 2n = 28.


Phenology: Flowering May–Jul.
Habitat: Birch scrub, talus slopes
Elevation: 1300–2100 m

Discussion

Rubus saxatilis is defined by its creeping, unarmed or weakly armed stems, ternate leaves, and relatively small white petals. It has very weak prickles that detach easily, sometimes giving plants an unarmed appearance. The species is known in the flora area from only two sites in southern Greenland (T. W. Böcher 1938; D. B. Jensen and K. D. Christensen 2003).

Selected References

None.

Lower Taxa

None.

"thin" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Rubus saxatilis"
eglandular +  and unarmed +
Lawrence A. Alice +, Douglas H. Goldman +, James A. Macklin +  and Gerry Moore +
Linnaeus +
compound +  and simple +
opposite +  and alternate +
unlobed +  and tapered +
reniform +  and orbiculate +
2 cm20 mm <br />0.02 m <br /> (30 cm300 mm <br />0.3 m <br />) +
herbaceous +  and more or less coriaceous +
not pruinose +
stipitate-glandular +, hairy +  and glabrous +
sparse to dense +
free +  and distinct +
hairy +  and glabrous +
Stone bramble +
Greenland +  and Eurasia +
not +  and aggregated +
1300–2100 m +
0.5 cm5 mm <br />0.005 m <br /> (8 cm80 mm <br />0.08 m <br />) +
not +  and aggregated +
without torus +  and separating +
coherent +
hairy +  and glabrous +
globose +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
dryish +  and fleshy +
Birch scrub, talus slopes +
eglandular or +  and sparsely densely glandular +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
glabrous or +  and sparsely densely pubescent +
flat +  and hemispheric +
umbelliform +, cymiform +  and 1-6-flowered +
glabrous or +  and sparsely densely pubescent +
crassinucellate +
subsessile +  and sessile +
deciduous +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
ovate +  and elliptic +
1.7 cm17 mm <br />0.017 m <br /> (15 cm150 mm <br />0.15 m <br />) +
revolute +  and finely coarsely crenate +
inferior +  and superior +
clustered +, biseriate +  and superposed +
collateral +  and apical +
1 +  and 2 +
stipitate-glandular +, glabrous or +  and sparsely densely hairy +
0 (?) +  and 5 (?) +
greenish white +
free +  and distinct +
obovate +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
2 cm20 mm <br />0.02 m <br /> (11 cm110 mm <br />0.11 m <br />) +
Flowering May–Jul. +
adnate +, free +, connate +  and distinct +
stipitate-glandular +  and hairy +
not +  and broad-based +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
not arillate +
eglandular +, armed +  and unarmed +
persistent +
free +  and distinct +
reflexed +  and spreading +
stipitate-glandular +, hairy +  and glabrous +
lanceolate +  and long-caudate +
free +  and distinct +
shorter to longer +
not pruinose +
annual +, perennial +  and biennial +
scrambling +  and mounding +
ascending +, arching +  and erect +
1 +  and several +
angled +  and terete +
palmate +  and pinnate +
lanceolate;ovate or elliptic +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
persistent +
distinct +
clavate +
slender +
Dalibarda +
Rubus saxatilis +
species +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
ovate +  and elliptic +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
inconspicuous +
convex +  and conic +
enlarged +  and small +
unarmed +  and armed +
subshrub +  and herb +
fibrous +  and woody +