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Plants of Taiwan

  • Dendrobium leptocladum Hayata
    細莖石斛   Endemic

    形態特徵

    TYPE! <em>Dendrobium leptocladum</em> Hayata

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    相關連結

    作者

    SU, Horng-Jye

    形態特徵

    • Stems tufted, wiry, slender, often curved or slightly pendulous, 20-50 cm long, 1.5 mm in diam.; internodes 2-2.5 cm long.
    • Leaves linear, 4-10 cm long, 3-5 mm wide, apex acute, base narrowed, articulated with sheath; sheaths as long as internodes.
    • Inflorescence lateral, arising from nodes of leafy or defoliated stem, with 1-3, usually 2 flowers; peduncle ca. 1 cm long; bract triangular, 2 mm long; pedicel and ovary 1 cm long. Flowers white, perianth not opening widely; sepals subequal, dorsal one oblong, 10-12 mm long, 4 mm wide, apex obtuse, base narrowed; lateral sepals 13 mm long, 5 mm wide, apex acute, base oblique, adnate to foot of column and forming mentum 4 mm long, mentum greenish at apex; petals rhomboid-lanceolate, 11 mm long, 3-4 mm wide, apex acute, base cuneate; lip elongate rhomboid, obscurely 3-lobed or unlobed, 13-15 mm long, 7-8 mm wide, lacerate-ciliate in upper part, base attenuate, entire, disc hirsute, with long longitudinal raised ridges; column 2 mm long, foot 4-5 mm long; anther white, 1.3 mm long; pollinia yellow, clavate.
    • Capsules fusiform, 1.5-2 cm long.

    分布

    Taiwan: Forests at low elevations in the central and southern mountainous regions, often on rocks.

    引證標本

    NANTOU: Shuangtung, Ito s. n. Sep 1916; Tungpu, Su et al 9056. PINGTUNG: Wutai, Su 8080; Taiwu, Yang 3442. TAITUNG: Tawushan, Su 164.

    資料來源

    SU, Horng-Jye. 2000. 38. ORCHIDACEAE. Flora of Taiwan, second edition (台灣植物誌第二版). 5: 844.

    本種於 1914 年由 Hayata 在台灣記錄到後,目前已有 2 種學名、 1 種中文名及 1 種其他語言俗名曾在台灣被使用。

    本種共有 2 份 典藏標本

    <em>Dendrobium leptocladum</em> Hayata細莖石斛