斑籽木 ban zi mu

Croton solanifolius Burman, Fl. Malab. 6. 1769; Balio spermum angulare Decaisne ex Baillon; B. axillare Blume; B. indicum Decaisne; B. montanum (Willdenow) Müller Argoviensis; B. moritzianum Baillon; B. pendulinum Pax; B. polyandrum (Roxburgh) Wight; B. razianum Keshava Murthy & Yoganarasimhan; C. polyandrus Roxburgh; C. roxburghii Wallich; Jatropha montana Willdenow; Ricinus montanus (Willdenow) Wallich.

Shrubs 1-3 m tall, monoecious (rarely dioecious); young branches green, appressed pubescent, glabrous at maturity. Petiole 1-8[-13] cm, pubescent to glabrous, apex usually 2-glandular; leaf blade elliptic, oblong, or oblanceolate to broadly ovate, sometimes shallowly 3-5-lobed, 5-20 × 1-9 cm, papery, both surfaces appressed pubescent to glabrous, base rounded to broadly cuneate, rarely subcordate, margin subentire or sparsely serrulate to undulate-crenulate, apex obtuse or acute, rarely acuminate; lateral veins 4 or 5. Panicles axillary, male ones 2-7(-16) cm, narrow, pubescent. Male flowers: pedicel 2-12 mm; sepals 5, ovate; disk urceolate; stamens ca. [10-]17. Female flowers 1-3, axillary or inserted at base of male inflorescences; pedicel 2-10 mm; sepals 5, ovate or triangular, 1-2 × 0.8-1 mm, pubescent outside; disk annular; ovary densely pubescent; styles 3, 1.5-3 mm, apex bifid. Fruiting calyx accrescent to (3-)5 × 2(-3) cm; capsule pendulous, subglobose, 8-10[-13] mm in diam., puberulent. Seeds elliptic-ovoid, ca. 3.5 × 3 mm, gray-brown, with stripes of yellowish spots. Fl. Mar-May, fr. Jun-Sep.

Mixed woodlands; below 700 m. SW Yunnan [Bangladesh, Bhutan, Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam].