Aralia regeliana Marchal

Aralia regeliana Marchal, Bull. Acad. Belg. II
47:73. 1879.
Shrub or small tree, 1-3 m. high, the branchlets stout, cinereous, glabrous, marked by crowded leaf-scars, the leaves and inflorescences at the ends of the branchlets; leaves up to 20 cm. long, usually bipinnate, the lower pinnae with few leaflets, the petiole and rachises slender, glabrous or crispate-pilose, the petiole up to 1 1 cm. long, the leaflets slenderly petiolulate, the petiolules up to 2 cm. long, the blades submembranous, pellucid, narrowly ovate or oblong, up to 8 cm. long and 2.5 cm. broad, unequally obtuse or rounded at the base, longacuminate at the apex, crenate-serrate, glabrous or crispate-puberulent on both surfaces; inflorescences terminal, not leafy, about as long as the leaves, glabrous, the peduncle and branches slender, the umbels usually 5-10, the bractlets lanceolate, minute, the pedicels 20-50 per umbel, up to 2 cm. long in fruit; flowers 5-merous, the calyx broadly obconic-flattened, less than 1 mm. long, 2.5-3 mm. broad, the lobes separate, deltoid, subacute, minutely fimbriate; petals oblong-deltoid, 2.5-3 mm. long; filaments about 1.5 mm. long, subequal to the anthers; styles short, free nearly to the base; fruit 4-5 mm. in diameter.
Type locality: Tamaulipas.
Distribution: Tamaulipas and San Luis Potosl.