Toxicodendron grandiflorum C. Y. Wu & T. L. Ming

Trees or shrubs, 3-8 m tall; branchlets purplish red, glabrous, glaucous; buds purplish brown, glabrous. Petiole 4-6.5 cm, petiole and rachis slender, purplish red, glabrous, often glaucous; leaf blade imparipinnately compound, 20-30 cm; leaflets 7-15, opposite or subopposite; leaflet petiolule 5-15 mm; leaflet blade obovate-elliptic to lanceolate, 5.5-10 × 1.5-3.5 cm, papery, glabrous on both surfaces, glaucous abaxially, base broadly cuneate to decurrent, margin entire, apex acuminate to acute, lateral veins ca. 20 pairs, prominent on both surfaces. Inflorescence paniculate, 15-25(-30) cm, glabrous. Pedicel 2-3 mm, glabrous; flowers light yellow, ca. 4 mm in diam. Calyx glabrous, lobes broadly ovate, ca. 1 mm, obtuse apically. Petals elliptic, ca. 3 × 1.5 mm, obtuse apically, with brown featherlike venation pattern, revolute at anthesis. Stamen filaments subulate, ca. 1.5 mm; anthers ovate-oblong, ca. 2 mm. Disk 5-lobed. Ovary subglobose, ca. 0.5 mm in diam. Drupe oblique, compressed, 6-7 × 7-8 mm, glabrous, light yellow at maturity, lucid.

SW Sichuan, C, NW, and SE Yunnan.

● Hill and mountain forests, thickets; 700-2700 m.

Flowering from April to July; fruiting from August to October.

Toxicodendron grandiflorum var. grandiflorum is close relative of Toxicodendron grandiflorum var. longipes, but differs from the latter in its obovate-elliptic to obovate-oblong (vs. lanceolate) leaflet blade, ca. 5 mm (vs. 10-15 mm) leaflet petiolule.

Toxicodendron grandiflorum is occurring in SW Sichuan, C, NW, and SE Yunnan of China.

Trees or shrubs, 3-8 m tall; branchlets purplish red, glabrous, glaucous; buds purplish brown, glabrous. Petiole 4-6.5 cm, petiole and rachis slender, purplish red, glabrous, often glaucous; leaf blade imparipinnately compound, 20-30 cm; leaflets 7-15, opposite or subopposite; leaflet petiolule 5-15 mm; leaflet blade obovate-elliptic to lanceolate, 5.5-10 cm long, 1.5-3.5 cm wide, papery, glabrous on both surfaces, glaucous abaxially, base broadly cuneate to decurrent, margin entire, apex acuminate to acute, lateral veins ca. 20 pairs, prominent on both surfaces. Inflorescence paniculate, 15-25 (-30) cm, glabrous. Pedicel 2-3 mm, glabrous; flowers light yellow, ca. 4 mm in diameter. Calyx glabrous, lobes broadly ovate, ca. 1 mm, obtuse apically. Petals elliptic, ca. 3 × 1.5 mm, obtuse apically, with brown featherlike venation pattern, revolute at anthesis. Stamen filaments subulate, ca. 1.5 mm; anthers ovate-oblong, ca. 2 mm. Disk 5-lobed. Ovary subglobose, ca. 0.5 mm in diameter. Drupe oblique, compressed, 6-7 mm long, 7-8 mm wide, glabrous, light yellow at maturity, lucid.

Growing in hill and mountain forests, thickets; 700-2700 m.

Toxicodendron grandiflorum is here defined to leaflet petiolule ca. 5 mm, leaflet blade obovate-elliptic to obovate-oblong.

Toxicodendron grandiflorum là một loài thực vật có hoa trong họ Đào lộn hột. Loài này được C.Y. Wu & T.L. Ming miêu tả khoa học đầu tiên năm 1979.

大花漆（学名：Toxicodendron grandiflorum）为漆树科漆属的植物，为中国的特有植物。分布于中国大陆的四川、云南等地，生长于海拔700米至2,700米的地区，见于山坡疏林及石灌丛中，目前尚未由人工引种栽培。