ACANTHOPANAX (from acanthos, a spine, and Panax; alluding to the spiny stems and Panax-like aspect of the plants). ORD. Araliaceae. A genus embracing about eight species of stove or greenhouse, glabrous or tomentose shrubs (rarely trees?), natives of Japan, China, and tropical Asia. Flowers polygamous or hermaphrodite; petals five, rarely four, valvate; stamens five, rarely four, the filaments filiform; pedicels continuous with the flowers; bracts small or wanting; umbellets paniculate or almost solitary. Leaves palmately cleft, digitate, or one-foliolate. Only two species call for mention here. ACANTHOPANAX ricinifolia (Ricinus-leaved). The correct name of the plant described as Aralia Maximowiczii. ACANTHOPANAX spinosum (spiny). The correct name of the plant described as Aralia pentaphylla.