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    台灣植物誌 第二版  Flora of Taiwan, 2nd edition    Vol. 4

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    台灣植物誌第二版  Flora of Taiwan, 2nd edition  4: 744

    3. Lonicera hypoglauca Miq., Ann. Mus. Bot. Lugd.-Bat. 2: 270. 1866; Li, Fl. Taiwan 4: 707. 1978.
    ̥էԥV Pl. 342

    Lonicera affinis Hook. & Arn. Var. pubescens Maxim., Mel. Biol. 10: 58. 1887.
    Lonicera affinis var. hypoglauca Rehd., Ann. Rep. Missouri Bot. Gard. 14: 158. 1903.
    Lonicera rubropunctata Hayata, Icon. Pl. Formosan. 9: 48. 1920.
    Lonicera affinis var. mollissima Mak., New Ill. Fl. Jap. 600. 1961.

    Climbing woody vines; branchlets pubescent. Leaves thin-chartaceous, ovate-oblong, 6-8 cm long, 2.5-3.5 cm broad, base rounded, truncate to subcordate, apex acuminate, entire, upper surface dark, glabrous to pubescent along midrib, lower surface slightly paler, pubescent, minutely red glandular, midrib impressed on upper surface, raised on lower surface; petiole 5-10 mm long, densely pubescent. Inflorescences axillary cymes or congested toward end of branches, densely pubescent. Peduncles 5 mm long, pubescent; bracts spatulate-lanceolate, ca. 4 mm long; bracteoles orbicular, ciliate; calyx minutely 5-lobed; corolla white tinged with pink, tube slender, ca. 2 cm long, sparsely pubescent without, limb 2-lipped, ca. 2 cm long, upper lip 4-lobed; stamens 5, exserted, adnate to throat of corolla. Fruit globose to broadly elliptic, black.

    China, Japan. Taiwan, in forests and thickets, in the northern and central parts.

    TAIPEI: Yangmingshan, S. T. Chiu & S. J. Chen 1234; Tanshui, S. T. Chiu 2127; Neihu, C. L. Huang 366. ILAN: Chilanshan, S. T. Chiu & S. J. Chen 1175; Jiauhsi, S. L. Chen s. n. 1991. HSINCHU: Hsinpu, C. M. Wang 760; Ssumakussu, S. T. Chiu 2403. MIAOLI: Tahu, S. J. Chen s. n. 1993; Kuantaoshan, Ou et al. s. n. 1989. TAICHUNG: Kukuan, Huang, Kao & Chou 9632; Chinshan, S. F. Huang 603. NANTOU: Luku, K. Y. Wang 164. CHIAYI: Meishan, Y. R. Lin & C. H. Chen 500; Laichi, J. C. Wang et al. 6967. KAOHSIUNG: Taoyuan, C. C. Wang et al. 102. HUALIEN: Chenghsi, L. Y. Lin et al. 33.

    4. Lonicera japonica Thunb., Fl. Jap. 89. 1784; Li, Fl. Taiwan. 4: 709. 1978.
    ԥV ( Ȫ) Photo 375

    Lonicera affinis Thunb. Var. sempervillosa Hayata, Icon. Pl. Formosan. 9: 47. 1920.
    Lonicera shintenensis Hayata, Icon. Pl. Formosan. 9: 48. 1920.

    Semi evergreen twining to scandent woody vines; branchlets pubescent. Leaves chartaceous, broadly lanceolate, ovate to elliptic, 3-8 cm long, 2-3 cm broad, base rounded to subcordate, apex acute to obtuse or rounded, entire, upper surface slightly pubescent, lower surface densely so, midrib distinct, raised on both surfaces; petiole 3-10 mm long, densely pubescent. Inflorescences axillary, 2-flowered cymes; peduncle usually solitary, ca. 3-15 mm long, pubescent; bracts below each pair of flowers foliaceous, petiolate, densely pubescent; bracteoles suborbicular, pubescent. Flowers in pairs; calyx tube conical, pubescent; corolla 3-4 cm long, pubescent and glandular without, white tinged with purple, turning yellow in age, tube ca. 2 cm long, limb ca. 2 cm long; style 1; stamens 5, exserted. Fruit globose, black, 3-4 mm across.

    China, Japan. Taiwan, common in thickets at low elevations mostly in the northern part.

    TAIPEI: Kuanyinshan, S. F. Huang 1237; Pali, S. T. Chiu 1585. TAOYUAN: Yungan, M. T. Kao 8763; Tayuan, Huang, Hsieh & Lin 8658; HSINCHU: Lienhuassu, K. C. Yang et al. 4883; Emei, C. M. Wang 369. MIAOLI: Chunan, C. H. Lin et al. 603. TAICHUNG: Tachia, S. T. Chiu 3007; Taichung, Ou et al. s. n. 1986; PENGHU: Shakang, K. C. Yang & W. L. Chiou 4839.

    This species is highly variable in indumentum and leaf shape, resulting in many infraspecific taxa being named and many hybrids with other species suspected. Lonicera shintenensis, with limited specimens available, is difficult to distinguish from this species, differing only by its small triangular bracts. It is possible that L. shintenensis is a hybrid between L. japonica and L. hypoglauca or a related species, or that it might be recognizably distinct below specific rank.