|Standard Cyclopedia of Horticulture|
Ungnadia (named for Baron Ungnad, who in 1576 introduced the common horse-chestnut to western Europe by sending seeds to Clusius at Vienna). Sapindaceae. Mexican Buckeye. Small tree or shrub which has been grown abroad in the coolhouse, but is hardy in the S. U. S., where it is used as an ornamental. Lvs. alternate, without stipules, odd-pinnate; lfts. 3-7 pairs, serrate, terminal long-petioled: fls. polygamous, irregular, aggregated in lateral fascicle or corymbose; calyx subequal, campanulate, 4-5-parted, lobes imbricate; petals 4-5, subequal, clawed, apex connate-cristate; disk 1-sided, oblique, tongue-shaped; stamens 7-10, unequal in length; ovary stipitate, ovoid, 3-celled: caps. 3-lobed, loculicidally 3-valved, leathery, cells 1-seeded: seed emetic.—One species, Texas. The seed, or "bean,” has a sweet taste, but is considered emetic and poisonous. The fr. does not have a prickly husk like the horse-chestnut. CH
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- Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963