Northeastern Asian Flora
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Eleutherococcus senticosus (Rupr. & Maxim.) Maxim.  
Family: Araliaceae
[Acanthopanax asperulatus Franch., moreAcanthopanax cuspidatus var. tienchuanensis C.Ho, Acanthopanax eleutherococcus (Maxim.) Makino, Acanthopanax senticosus (Rupr. & Maxim.) Harms, Acanthopanax senticosus f. inermis (Kom.) Harms, Acanthopanax senticosus f. subinermis (Regel) Harms, Acanthopanax senticosus var. brevistaminea S.F.Gu, Acanthopanax senticosus var. subinermis (Regel) Kitag., Eleutherococcus asperulatus Franch., Eleutherococcus senticosus f. inermis Kom., Eleutherococcus senticosus f. subinermis Regel, Eleutherococcus senticosus var. subinermis Regel, Hedera senticosa Rupr. & Maxim.]
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  • Korea Flora
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Korea Flora: Deciduous shrub. Height 2-3m. Winter Buds and Stems: Buds ovate with brown bud scales. Branches sparsely divided, densely covered with thin long prickles, grayish-brown, especially numerous below petioles. Leaf scars semicircular with 5-6 vascular bundle scars. Leaves: Alternate, palmately compound; leaflets (3)4-5, elliptic-spathulate or oblong, shortly acuminate at apex, cuneate at base, 6-12cm × 2-4cm. Upper surface with scattered hairs; lower surface with brown hairs along veins when young; margins with sharp double serrations. Petiole 3-8cm long, heavily armed with prickles. Flowers: Umbels solitary at branch tips or branching from base. Main peduncle 2.5-3cm long, pedicels 6-8mm long. Flowers purplish-yellow; flower stalks 10-20mm long, glabrous except for dense hairs at branching points. Style 1-1.8mm long, completely united with slightly 5-lobed stigma. Fruit and Seeds: Globose, glabrous, 8-10mm in diameter.

Sporophyte Chromosome Number: 48
Flowering Period: Mid-July to early August
Fruiting Period: October
Distribution: Three Northeastern Provinces and Northern China, Far Eastern Russia, Hokkaido (Japan); North and South Hamgyeong-do, North and South Pyeongan-do, Northern Gyeonggi-do, Gangwon-do (Korea)
Ecological Characteristics: Grows at elevations above 700m and suffers from heat stress, making it poorly adapted to lower elevations.

Eleutherococcus senticosus
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Development supported by College of Agriculture and Life Sciences of Seoul
National University and Korea National Arboretum of Korea Forest Service.
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