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Key to families | Table of families and genera

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ROSACEAE ROSE FAMILY

Daniel Potter & Barbara Ertter, family description, key to genera; treatment of genera by Daniel Potter, except as noted

Annual to tree, glandular or not. Leaf: simple to palmately or pinnately compound, generally alternate; stipules free to fused (0), persistent to deciduous. Inflorescence: cyme, raceme, panicle, cluster, or flowers 1; bractlets on pedicel ("pedicel bractlets") generally 0–3(many), subtended by bract or generally not. Flower: generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, subtending bractlets ("hypanthium bractlets") 0–5, alternate sepals; sepals generally 5; petals generally 5, free; stamens (0,1)5–many, anther pollen sacs generally 2; pistils (0)1–many, simple or compound, ovary superior to inferior, styles 1–5. Fruit: 1–many per flower, achene (fleshy-coated or not), follicle, drupe, or pome with generally papery core, occasionally drupe-like with 1–5 stones. Seed: generally 1–5 (per fruit, not per flower).
110 genera, ± 3000 species: worldwide, especially temperate; many cultivated for ornamental, fruit, especially Cotoneaster, Fragaria, Malus, Prunus, Pyracantha, Rosa, Rubus. [Potter et al. 2007 Plant Syst Evol 266:5–43] Number of teeth is per leaf or leaflet, not per side of leaf or leaflet, except in Drymocallis. —Scientific Editors: Daniel Potter, Thomas J. Rosatti.
Unabridged references: [Robertson 1974 J Arnold Arbor 55:303–332, 344–401, 611–662]

Key to Rosaceae

RUBUS

Lawrence A. Alice

Generally shrub; (dioecious). Stem: persisting 1–2 years, rooting at tips and/or nodes or not, erect or arched to mounded or prostrate, 5-angled or not, hairy or glabrous, glaucous or not, stalked glands present or not; bristles or prickles 0–many, prickles stout and wide-based or weak and slender, straight or curved. Leaf: simple, palmately lobed, to palmately compound, leaflets 3 or 5(11), toothed, abaxially ± glabrous to densely hairy; stipules thread-like to ovate or elliptic. Inflorescence: raceme- or panicle-like cyme, axillary or terminal; pedicel bractlets 0. Flower: generally bisexual; hypanthium flat to saucer-shaped, bractlets 0; sepals persistent, reflexed to ascending, ovate or lance-ovate, hairy or glabrous, stalked or sessile glands present or not, tip pointed, prickly or not; petals widely obovate, spoon-shaped, or elliptic, white to ± pink or magenta; stamens generally >> 20, filaments thread- or strap-like; pistils 5–150, receptacle flat or convex to conical, spongy, generally elongated in fruit, ovaries superior, hairy or glabrous, styles long, slender or short, thick, glabrous or hairy; ovules 2, 1 maturing. Fruit: fleshy-coated achenes, aggregate of few to many, yellow, orange, red, or black, generally falling as unit, separating with (blackberry-type) or without (raspberry-type) receptacle attached.
400–750 species: worldwide except Antarctica, especially northern temperate. (Latin: red; ancient name for bramble, blackberry)
Unabridged references: [Alice & Campbell 1999 Amer J Bot 86:81–97]

Key to Rubus

R. leucodermis Torr. & A. Gray WHITEBARK RASPBERRY
NATIVE
Plant 1–2(3) m, arched to mounded; prickles many, stout, wide-based, straight or generally curved. Stem: 4–10 mm diam, not angled, glabrous, strongly glaucous in youth, persisting 2 years, rooting at tips. Leaf: 1st-yr stem leaves generally compound, leaflets (3)5, terminal ovate to lanceolate, shallow-3-lobed, coarse-toothed, tip acute, abaxially densely white-tomentose; flower stem leaves simple or compound, leaflets 3; stipules <= 1 mm wide, thread-like to linear. Inflorescence: flat-topped cyme, flowers generally 3–10(12). Flower: sepals hairy, prickly, ± with stalked glands; petals 3–5(8) mm, oblong to oblanceolate-elliptic, white; filaments strap-like; pistils generally > 30, styles long, slender, ovaries densely white-hairy. Fruit: raspberry-type, red-purple to ± black.
2n=14. Generally open, rocky, especially moist areas; 40–2400 m. California Floristic Province (except Great Central Valley); to southern Alaska, Montana, Utah, Arizona. Apr–Jul [Online Interchange]
Unabridged synonyms: [Rubus leucodermis var. bernardinus (Greene) Jeps.; Rubus leucodermis var. trinitatis A. Berger]
Unabridged note: Expanded author citation: Rubus leucodermis Douglas ex Torr. & A. Gray

Previous taxon: Rubus lasiococcus
Next taxon: Rubus nivalis

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 21 2014
Citation for this treatment: [Author of taxon treatment] 2013. Rubus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=42027, accessed on Dec 21 2014

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click for enlargement Rubus leucodermis
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1995 Saint Mary's College of California

Geographic subdivisions indicated for the distribution of Rubus leucodermis Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.