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FOC | Family List | FOC Vol. 11 | Euphorbiaceae | Trigonostemon

1. Trigonostemon xyphophylloides (Croizat) L. K. Dai & T. L. Wu, Acta Phytotax. Sin. 8: 277. 1963.

剑叶三宝木 jian ye san bao mu

Cleidion xyphophylloides Croizat, J. Arnold Arbor. 21: 503. 1940.

Shrubs ca. 3 m tall; branchlets dark brown, scabrous. Leaves densely clustered in apparent whorls; stipules small; petiole 3-6 mm, with paired glands at apex; leaf blade oblanceolate to subspatulate, 25-50 × 7-11 cm, both surfaces glabrous, base cuneate, obtuse, margins sparsely glandular-serrulate, apex acute to acuminate; lateral veins 14-22, arcuate anastomosing before margins. Racemes axillary, less than 3 cm, bisexual; bracts 2-3 mm, abaxially hirsute. Male flowers: pedicel 4-8 mm; sepals elliptic, ca. 1.2 mm, hirsute; petals oblanceolate, ca. 4 mm, yellow, glabrous; disk glands 5; stamens 3; filaments connate. Female flowers: pedicel ca. 6 mm; sepals narrowly ovate, ca. 3 mm, abaxially hirsute; petals as in male; disk glands 5; ovary glabrous; styles short; stigmas capitate and retuse. Capsules slightly depressed globose, 1-1.5 × ca. 1.5 cm, shallowly 3-grooved. Seeds depressed globose, ca. 8 mm in diam., brown, with stripes of yellow spots. Fl. Jun-Sep, fr. Aug-Nov.

● Dense forests; 400-500 m. Hainan.


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