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FOC | Family List | FOC Vol. 11 | Rutaceae | Tetradium

1. Tetradium fraxinifolium (Hooker) T. G. Hartley, Gard. Bull. Singapore. 34: 102. 1981.

无腺吴萸 wu xian wu yu

Philagonia fraxinifolia Hooker, Icon. Pl. t. 710. 1845; Euodia fraxinifolia (Hooker) Bentham; E. impellucida Handel-Mazzetti; E. impellucida var. macrococca C. C. Huang; E. poilanei Guillaumin; E. subtrigonosperma C. C. Huang.

Trees to 12 m tall. Leaves 23-67 cm, 5-15-foliolate; leaflet blades lanceolate or occasionally ovate, elliptic-oblong, or elliptic, 9-25 × 3.5-8.5 cm, abaxially often glaucous and sometimes subpapillate, secondary veins 13-22 on each side of midvein, reticulate veinlets abaxially usually inconspicuous, base in lateral leaflets rounded to narrowly cuneate and in terminal leaflet cuneate, margin crenulate or rarely entire, apex acuminate. Inflorescences 7-24 cm. Flowers 4(or 5)-merous. Sepals 0.5-1.5 mm. Petals green to pale yellow but drying brown, 3.5-6.5 mm, outside glabrous, inside glabrous to villous. Ovary glabrous or appressed pubescent; ovules 2 per carpel, subcollateral. Fruit (including abortive carpels, if any) usually 4-carpelled; follicles compressed subglobose, 5.5-10 mm, glabrous to sparsely pubescent, apex not beaked; endocarp glabrous or sparsely pubescent. Seeds 2 per follicle, subtrigonous, 4-5 mm, attached in dehisced follicle to a fleshy funiculate aril; seed coat with thick inner layer of dense black sclerenchyma and spongy outer layer bounded externally by a reddish brown to brownish black shiny pellicle. Fl. May and Nov, fr. Jul-Nov.

Forests, thickets; 700-3000 m. SE Xizang, Yunnan [Bhutan, India, Myanmar, Nepal, Thailand, N Vietnam].


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