Rubus spp.
Family: Rosaceae
Rubus image
PLANT: Woody shrubs or vines; stems (canes) usually only biennial and temporally dimorphic; first year canes (primocanes) usually vegetative; second year canes (floricanes) bearing flowers; prickles if present found on canes, leaves, and inflorescences. LEAVES: pinnately or palmately compound, or palmately lobed; primocane leaves often larger and with more leaflets than floricane leaves; stipules conspicuous, usually persistent, adnate to the petiole in ours, broad or linear. INFLORESCENCE: uniflorous or few‑many‑flowered cymes. FLOWERS: perfect, perigynous; hypanthium small; sepals 5, ascending to reflexed, commonly mucronate or caudate; petals 5, oblanceolate or spatulate to ovate, white to reddish; stamens many, distinct, erect; pistils many, on a convex to conical torus that enlarges in fruit, the styles terminal. FRUIT: a flat to conical aggregate of sweet, fleshy or dry drupelets which separate from the torus (raspberries) or not (blackberries, dewberries). x = 7. FRUIT: a flat to conical aggregate of sweet, fleshy or dry drupelets which separate from the torus (raspberries) or not (blackberries, dewberries). x = 7. NOTES: 200‑700 spp., 6 in AZ, temperate and tropical-montane, especially complex in Eur. and e N. Amer. (Latin: Pliny, rubus for bramble or blackberry). Bailey, L. H. 1941‑1945. Gentes Herb. 5:1‑932. Taxonomy complicated by hybridization, polyploidy, and apomixis. Collectors should include floricanes, primocanes, and notes regarding growth habit. Both R. neomexicanus and R. parviflorus are reported to be extensively browsed by deer. Native Americans reportedly ate the young shoots of R. parviflorus and R. idaeus, and made a tea of R. parviflorus leaves. Rubus discolor, R. idaeus, and R. leucodermis include fruit cultivars. REFERENCES: Brasher, Jeffrey W. 2001. Rosaceae. J. Ariz. - Nev. Acad. Sci. Volume 33(1).
Perennial subshrub or herb Stem: erect to trailing, usually prickly, often short-lived. Sometimes stems are biennial, with vegetative growth occurring in the first year and flowers and fruit produced the second year. Leaves: alternate, having an often prickly stalk with narrow stipules at the base, usually compound with three to five leaflets, sometimes simple, variable in size, toothed or lobed. Biennial stems usually have compound leaves the first year and have both compound and simple leaves the second year. Flowers: sometimes unisexual but usually bisexual, white to pink or red, usually borne on an inflorescence with the terminal flowers opening first (determinate), sometimes solitary, having numerous stamens and pistils, club-shaped to thread-shaped styles, and two side-by-side ovules (only one maturing). Pistils are attached to a convex to conic, enlarged end of the stalk (receptacle) which usually lengthens in fruit. Sepals: usually five, often subtended by five bracts, fused at the base, with lobes that are spreading to reflexed or meet at the edges but do not overlap (valvate). Petals: usually five, spoon-shaped to inversely egg-shaped or elliptic, erect to spreading, sometimes short-lived. Fruit: a cluster of small fleshy fruits (sometimes dry), each having a hard center seed (drupelets). Drupelets usually fall from the plant together but sometimes fall separately, and the receptacle may fall with the drupelets or remain on the stalk.

Flowering: spring to early summer

Habitat and ecology: Usually found in disturbed habitats, often in thickets, woods, or edges of woods. Some Rubus species are native, while others are introduced and sometimes escape into natural areas.

Notes: The genus Rubus includes blackberries, raspberries, thimbleberries, and dewberries. Species within the genus hybridize readily, adding to the already complicated taxonomy of Rubus.

Etymology: Rubus is the Latin name for bramble and also means red.

Author: The Morton Arboretum

Image of Rubus abactus
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Image of Rubus akermanii
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Image of Rubus amabilis
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Image of Rubus amnicola
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Image of Rubus arundelanus
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Image of Rubus avipes
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Image of Rubus baileyanus
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Image of Rubus bellobatus
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Image of Rubus brainerdii
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Image of Rubus carpinifolius
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Image of Rubus celer
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Image of Rubus concameratus
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Image of Rubus cordifolius
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Image of Rubus coronarius
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Image of Rubus crataegifolius
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Image of Rubus curtipes
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Image of Rubus densissimus
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Image of Rubus eastwoodianus
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Image of Rubus elegantulus
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Image of Rubus eriocarpus
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Image of Rubus franciscanus
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Image of Rubus frondisentis
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Image of Rubus fryei
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Image of Rubus glandicaulis
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Image of Rubus groutianus
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Image of Rubus hallandicus
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Image of Rubus hesperius
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Image of Rubus heterophyllus
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Image of Rubus humifusus
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Image of Rubus humulifolius
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Rubus
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Image of Rubus immanis
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Image of Rubus incisus
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Image of Rubus insons
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Image of Rubus invisus
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Image of Rubus ithacanus
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Image of Rubus junceus
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Image of Rubus komarovii
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Image of Rubus leviculus
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Image of Rubus lindleianus
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Image of Rubus loganobaccus
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Image of Rubus lucidus
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Image of Rubus macropetalus
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Image of Rubus meracus
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Image of Rubus miscix
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Image of Rubus mississippianus
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Image of Rubus multifer
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Image of Rubus multispinus
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Image of Rubus nefrens
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Image of Rubus nessensis
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Image of Rubus oligospermus
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Rubus
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Image of Rubus ostryifolius
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Image of Rubus pergratus
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Image of Rubus persistens
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Image of Rubus philadelphicus
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Image of Rubus phyllothyrsus
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Image of Rubus plicatifolius
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Image of Rubus plicatus
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Image of Rubus plus
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Image of Rubus praecox
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Image of Rubus procumbens
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Image of Rubus proiectus
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Image of Rubus racemiger
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Image of Rubus regionalis
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Image of Rubus repens
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Image of Rubus rhamnifolius
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Image of Rubus riograndis
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Image of Rubus rosifolius
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Image of Rubus rubrisetus
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Image of Rubus rudis
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Image of Rubus satis
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Image of Rubus scambens
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Rubus
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Image of Rubus scopulorum
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Image of Rubus serissimus
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Image of Rubus sewardianus
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Rubus
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Image of Rubus spectatus
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Image of Rubus spiculosus
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Image of Rubus steelei
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Image of Rubus stipulatus
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Image of Rubus subinnoxius
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Image of Rubus superioris
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Image of Rubus tardatus
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