Rubus loganobaccus L. H. Bailey, Rosaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  High risk, score: 11 (Go to the risk assessment).

Other Latin names:  Rubus ursinus var. loganobaccus (L. H. Bailey) L. H. Bailey

Common name(s): [more details]

Chinese: luo gan mei

English: boysenberry, loganberry, phenomenal-berry, tayberry

French: ronce de logan, ronce-framboise

Japanese: roogan berii

Spanish: mora logan, zarza de logan, zarza-frambuesa

Habit:  shrub

Description:  "Spreading or climbing shrub to 5 m high when growing through supporting vegetation. Primocane stems rounded or scarcely angled, glabrous or with sparse non-glandular pilose hairs, prickles 3-6 mm long, not confined to angles. Flowering stems from the leaf axils of the floricane. Primocane leaves pinnately compound, with 3, 5 or 7 leaflets, terminal leaflet 5.5-8 cm long, 3.5-6.5 cm wide; leaflets with sparse pilose hairs below, broadly-ovate to elliptic, petiole 3-8.5 cm long. Floricane leaves at base of flowering panicles consisting of 3 or 5 leaflets, lower surface of leaflets as for primocane leaflets, terminal leaflet mostly 4-10.5 cm long and 2.5-10.5 cm wide, petiole 3-6.5 cm long. Inflorescence subcorymbose with 6-12 flowers. The first formed flowers usually solitary in the leaf axils of 3-leaflet leaves. Sepals rarely with prickles. Petals 12-18 mm long, 7-9 mm wide, elliptic, white, not crumpled. Stamens shorter than styles. Fruit ovoid to oblong, initially green, ripening dark red to dull black. Distinguished by its pinnate primocane leaves, subcorymbose inflorescences and fruit ripening dark red to dull black"  (New South Wales PlantNET).

"'Logan' is a result of cross between red raspberry (R. idaeus L.) and a blackberry (R. ursinus Cham. & Schldl., Rosaceae derivative). 'Logan' fruit are similar in color and appearance to red raspberry but the torus remains with the fruit like a blackberry and they have a distinctive flavor"  (Temperate Berry Crops).

Habitat/ecology:  Cultivated

Propagation:  Seed

Native range:  Only cultivated; origin from cultivated in California, United States (GRIN).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Chile (offshore islands) Juan Fernández Islands	Isla Más a Tierra (Robinson Crusoe Island)	introduced cultivated	Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (pp. 542, 557)

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia Australia (continental)	Australia (continental)	introduced invasive cultivated	National Herbarium of New South Wales (2011) South Australia, Victoria
Australia Australia (continental)	New South Wales	introduced invasive cultivated	National Herbarium of New South Wales (2011) "Found in grasslands to forests".

Control:  See "Blackberry control manual: management and control options for blackberry (Rubus spp.) in Australia"  (Victoria Dept. Prim. Ind., 2009).

Additional information:
Additional online information about Rubus loganobaccus is available from the Hawaiian Ecosystems at Risk project (HEAR).

Information about Rubus loganobaccus as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

Taxonomic information about Rubus loganobaccus may be available from the Germplasm Resources Information Network (GRIN).

References:

Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido. 2006. Nouveau catalogue de la flore vaculaire de l'archipel Juan Fernández (Chile) [Nuevo catálogo de la flora vacular del Archipélago Juan Fernández (Chile)]. Acta Bot. Gallica 153(4):399-587.

National Herbarium of New South Wales. 2011. PlantNet: New South Wales Flora online. The Plant Information Network System of the Botanic Gardens Trust Version 2.0. Online resource.

Porcher, Michel H. 2011. Searchable World Wide Web Multilingual Multiscript Plant Name Database. The University of Melbourne, Australia. Online resource.

U.S. Dept. Agr., Agr. Res. Serv. 2011. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.

Victoria, Australia, Department of Primary Industry. 2009. Blackberry control manual: management and control options for blackberry (Rubus spp.) in Australia. 96 pp.