1. Pentacoelium bontioides Siebold & Zuccarini, Abh. Math.-Phys. Cl. Königl. Bayer. Akad. Wiss. 4(3): 151. 1846.
苦槛蓝 ku jian lan
Myoporum bontioides (Siebold & Zuccarini) A. Gray; M. chinense (A. Candolle) A. Gray; Polycoelium bontioides (Siebold & Zuccarini) A. Candolle; P. chinense A. Candolle.
Shrubs 1-2 m tall. Stems erect, branched; twigs pale brown, terete, 3-5 mm in diam. Leaves alternate, glabrous; petiole 1-2 cm; leaf blade narrowly elliptic, elliptic, or oblanceolate-elliptic, 4-13 × 1.5-4 cm, softly leathery, secondary veins 3 or 4 on each side of midvein, base attenuate, margin entire or rarely obscurely serrulate, apex acute to shortly acuminate and often mucronate. Flowers axillary, 1 or 2(-4) in fascicles. Pedicel 1-2.7 cm, apically thickened, glabrous. Sepals 5, ovate-elliptic to triangular-ovate, 3.5-5.5 mm, with some translucent glands, glabrous, persistent, apex acute. Corolla white to pale pinkish purple with purple spots or streaks, funnel-shaped to campanulate, 5-lobed, outside glabrous; tube 1.2-1.5 cm, throat 5-6 mm broad; lobes ovate to broadly ovate, ca. 8 mm, inside basally sparsely pubescent, apex rounded. Stamens inserted in corolla tube ca. 1 mm from base, glabrous; filaments 1.5-1.8 cm; anthers ca. 2 mm. Gynoecium glabrous; ovary ovoid-spherical, ca. 2 mm, with 5-8 locules, apically tapering; style filiform, ca. 2.5 cm; stigma capitate, 5-lobed. Fruit purplish red but drying pale brown, ovoid-spherical, 1-1.5 × 0.9-1.2 cm, fleshy, 5-8-ribbed when dry, apically tapering, glabrous, with 5-8 seeds. Fl. Apr-Jun, fr. May-Jul.
Sandy sites or stony thickets along coasts; near sea level. E Fujian, S Guangdong, S Guangxi (Fangcheng, Hepu), Hainan (Wanning, Xisha Qundao), W Taiwan, E Zhejiang (Dongtou) [S Japan, N Vietnam].