臭檀吴萸 chou tan wu yu

Zanthoxylum daniellii Bennett, Ann. Mag. Nat. Hist., ser. 3, 10: 201. 1862; Ampacus daniellii (Bennett) Kuntze; Euodia baberi Rehder & E. H. Wilson, p.p. as to E. H. Wilson 1164 p.p. Jul 1908 (see also synonymy of Tetradium ruticarpum); E. daniellii (Bennett) Hemsley; E. daniellii var. delavayi (Dode) C. C. Huang; E. daniellii var. henryi (Dode) C. C. Huang; E. daniellii var. hupehensis (Dode) C. C. Huang; E. daniellii var. labordei (Dode) C. C. Huang; E. daniellii var. villicarpa (Rehder & E. H. Wilson) C. C. Huang; E. delavayi Dode; E. henryi Dode; E. henryi var. villicarpa Rehder & E. H. Wilson; E. hupehensis Dode; E. labordei Dode; E. sutchuenensis Dode, p.p. as to R. P. Farges 1284 p.p. (see also synonymy of Phellodendron chinense var. chinense ); E. velutina Rehder & E. H. Wilson; E. vestita W. W. Smith; Z. bretschneideri Maximowicz.

Shrubs or trees, to 20 m tall. Leaves 15-44 cm, 5-9(or 11)-foliolate; leaflet blades broadly ovate to lanceolate or rarely elliptic or elliptic-oblong, 5-18.5 × 2.5-10.5 cm, abaxially sometimes ± glaucous and not papillate, secondary veins 7-14 on each side of midvein, reticulate veinlets abaxially usually inconspicuous, base in lateral leaflets narrowly cuneate, subtruncate, subrounded, or subcordate and in terminal leaflet narrowly cuneate, cuneate, or occasionally rounded, margin subentire to crenulate, apex acuminate. Inflorescences 3.5-19 cm. Flowers (4 or)5-merous. Sepals 0.5-1.5 mm. Petals white or whitish but drying whitish or pale brown, (2.5-)3-5 mm, outside glabrous, inside sparsely or sometimes densely pubescent or villous. Ovary pubescent between carpels, otherwise ± densely pubescent to glabrous; ovules 2 per carpel, superposed. Fruit (including abortive carpels, if any) usually 5-carpelled; follicles narrowly pyriform, 5-11 mm, sparsely to ± densely spreading pubescent, apex beaked; endocarp glabrous. Seeds 2 per follicle, superposed, black, ovoid to ellipsoid, shiny, attached in dehisced fruit to axile strip of pergamentaceous pericarp tissue; basal seed sterile, usually 1.5-3.5 mm, containing what appears to be endosperm but no embryo; apical seed fertile, 2.5-4 mm; seed coat sclerenchymatous, lacking spongy tissue, in fertile seed thick and resistant to breakage, in sterile seed thin and brittle. Fl. Jun-Aug, fr. Aug-Nov. 2n = 76, 78.

Forests, forest margins, open slopes; near sea level to 3200 m. Anhui, S Gansu, Guizhou, Hebei, Henan, Hubei, Jiangsu, Liaoning, S Ningxia, E Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, SE Xizang, Yunnan [Korea].