单叶蜜茱萸 dan ye mi zhu yu

Euodia viticina Wallich ex Kurz, J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 42: 64. 1873.

Shrubs or trees, 0.8-6 m tall, dioecious or sometimes monoclinous. Young branchlets 1-3 mm wide in third internode. Leaves 1- or 3-foliolate. Leaves 3-foliolate: petiole 1.5-7 cm, adaxially sparsely puberulent to pubescent, otherwise glabrous or nearly so; leaflet blades elliptic or elliptic-obovate, or narrowly so, or rarely obovate or oblanceolate, in terminal leaflet 5.5-21 × 1.5-6.5 cm, glabrous or sparsely puberulent to shortly pubescent on midvein, apex acuminate or rarely acute. Leaves 1-foliolate: petiole 0.3-4.5 cm; leaflet blades elliptic or elliptic-obovate, or narrowly so, 2.2-22 × 0.7-7.5 cm, otherwise similar to 3-foliolate leaves. Inflorescences axillary and sometimes basal to leaves, 0.5-5(-8.5) × 0.7-1.8(-2) cm; peduncle obsolete or to 2.5 cm; larger primary branches spreading or ascending. Pedicel 0.5-1.5 mm but 1.5-3 mm in fruit, glabrous to sparsely puberulent. Sepals 1-1.8 mm, connate at base, glabrous or outside sparsely puberulent, persistent in fruit. Petals 2.5-3 mm, persistent or rarely deciduous in fruit. Stamens 4, in male and bisexual flowers 2.2-3 mm, in female flowers 0.8-1.5 mm; filaments at least in male and bisexual flowers obtuse or narrowly so at apex. Gynoecium in female and bisexual flowers 1.5-2 mm, in male flowers 0.3-0.6 mm; ovary glabrous or rarely sparsely pubescent. Fruit follicles subglobose to ellipsoid, 5-7 mm, glabrous. Seeds ovoid to ellipsoid, 4-6.5 mm, attachment Type B. Fl. Apr-May, fr. Aug-Oct.

Open forests; 500-1300 m. S Yunnan [Cambodia, Laos, Myanmar, Thailand, Vietnam].

Plants mistakenly treated as Euodia simplicifolia Ridley var. simplicifolia by C. C. Huang (Fl. Reipubl. Popularis Sin. 43(2): 58. 1997) belong here.