Difference between revisions of "Rubus nutkanus"

Mociño ex Seringe in A. P. de Candolle and A. L. P. P. de Candolle

Prodr. 2: 566. 1825.

Common names: Thimbleberry
Basionym: Rubus parviflorus Nuttall Gen. N. Amer. Pl. 1: 308. 1818
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Latest revision as of 14:31, 15 December 2020

Shrubs, 5–20 (–30) dm, unarmed. Stems biennial, erect, sparsely hairy, glabrescent, moderately stipitate-glandular, glands yellowish to reddish, not pruinose. Leaves deciduous, simple; stipules lanceolate to ovate, 5–15 mm; blade orbiculate to reniform, 5–20 × 5–25 cm, base cordate, palmately, shallowly to moderately deeply, (3–) 5 (–7) -lobed, margins coarsely, irregularly serrate to doubly serrate, apex shortly acuminate to obtuse, abaxial surfaces glabrate to densely hairy, sparsely to moderately stipitate-glandular, glands yellowish to reddish. Inflorescences terminal and axillary, (1–) 3–7 (–15), cymiform to thyrsiform. Pedicels sparsely to moderately hairy, moderately to densely stipitate-glandular, glands yellowish to reddish. Flowers bisexual; petals white, broadly obovate, (10–) 14–22 (–28) mm; filaments filiform; ovaries distally densely hairy, styles clavate, glabrous. Fruits red, hemispheric, 1–1.8 cm; drupelets 50–60, coherent, separating from torus. 2n = 14.


Phenology: Flowering May–Aug.
Habitat: Moist areas, open woods, thickets, clearings, stream banks, canyons, grassy meadows, rocky cliffs, sand dunes, upper beaches, dry sandy areas, roadsides
Elevation: 0–3000 m

Distribution

V9 65-distribution-map.jpg

Alta., B.C., Ont., Alaska, Ariz., Calif., Colo., Idaho, Ill., Iowa, Mich., Minn., Mont., Nev., N.Mex., Oreg., S.Dak., Utah, Wash., Wis., Wyo., Mexico (Chihuahua)

Discussion

Rubus nutkanus is distinguished from other flowering raspberries by its erect, unarmed stems, simple leaves, large flowers, white petals, glabrous, clavate styles, and yellowish to reddish stipitate glands covering most plant parts. A hybrid with R. odoratus (R. ×fraseri Rehder) is thought to occur in areas of overlap in northern Michigan (E. G. Voss 1972–1996, vol. 2). Varieties and forms have been described based on indument and glandularity of stems, leaves, petioles, pedicels, and sepals (for example, M. L. Fernald 1950). Different variants often occur mixed in the same population and generally do not correspond to definite geographic regions (N. C. Fassett 1941). Plants from coastal California (considered as var. velutinus) tend to have densely hairy leaf abaxial surfaces; this variation may be environmentally induced; other Rubus species show the same pattern (for example, R. spectabilis var. franciscanus) in that area. Wild thimbleberries are collected in Keweenaw Peninsula, Michigan, and are used in beverages and especially for jam.

Rubus nutkanus is typically associated with western North America but was originally described from plants at its eastern range limit in northern Michigan. The Great Lakes populations are disjunct from western mountain populations by around 600 miles.

The name Rubus parviflorus var. grandiflorus Farwell, which applies here, is illegitimate.

Selected References

None.

Lower Taxa

None.

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

... more about "Rubus nutkanus"
eglandular +, with prickles +  and unarmed +
glabrate +  and densely hairy +
shortly acuminate;obtuse +
Lawrence A. Alice +, Douglas H. Goldman +, James A. Macklin +  and Gerry Moore +
Mociño ex Seringe in A. P. de Candolle and A. L. P. P. de Candolle +
compound +  and simple +
opposite +  and alternate +
(3-)5(-7)-lobed +  and cordate +
Rubus parviflorus +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
orbiculate +  and reniform +
2 cm20 mm <br />0.02 m <br /> (30 cm300 mm <br />0.3 m <br />) +
herbaceous +  and more or less coriaceous +
5 cm50 mm <br />0.05 m <br /> (?) +  and 25 cm250 mm <br />0.25 m <br /> (?) +
not pruinose +
stipitate-glandular +, hairy +  and glabrous +
sparse to dense +
free +  and distinct +
hairy +  and glabrous +
Thimbleberry +
Alta. +, B.C. +, Ont. +, Alaska +, Ariz. +, Calif. +, Colo. +, Idaho +, Ill. +, Iowa +, Mich. +, Minn. +, Mont. +, Nev. +, N.Mex. +, Oreg. +, S.Dak. +, Utah +, Wash. +, Wis. +, Wyo. +  and Mexico (Chihuahua) +
not +  and aggregated +
0–3000 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 +
hemispheric +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
dryish +  and fleshy +
not pruinose +
yellowish +  and reddish +
Moist areas, open woods, thickets, clearings, stream banks, canyons, grassy meadows, rocky cliffs, sand dunes, upper beaches, dry sandy areas, roadsides +
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 +
cymiform +  and thyrsiform +
glabrous or +  and sparsely densely pubescent +
crassinucellate +
deciduous +
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 +
eglandular +, armed +  and unarmed +
hairy +  and moderately densely stipitate-glandular +
0 (?) +  and 5 (?) +
2.2 cm22 mm <br />0.022 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
free +  and distinct +
obovate +
1.4 cm14 mm <br />0.014 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
Flowering May–Aug. +
adnate +, free +, connate +  and distinct +
erect +  and retrorse +
sparse to dense +
not +  and broad-based +
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 +  and rooting +
scrambling +  and mounding +
decumbent +  and creeping +
stipitate-glandular;glabrescent;hairy +
1 +  and several +
angled +  and terete +
palmate +  and pinnate +
adnate +  and free +
lanceolate;ovate +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
persistent +
distinct +
clavate +
slender +
Dalibarda +
Rubus nutkanus +
species +
inconspicuous +
convex +  and conic +
enlarged +  and small +
fibrous +  and woody +