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Plants of Taiwan

  • Platanthera mandarinorum Rchb. f. ssp. formosana T. P. Lin & K. Inoue
    惠粉蝶蘭   Endemic

    形態特徵

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    相關連結

    作者

    SU, Horng-Jye

    形態特徵

    • Plants 10-25 cm tall. Tuberoids ovoid to fusiform, 2-4 cm long, 4-7 mm thick, producing new shoot from base. Stem short, distinctly ridged, with one or two larger basal leaves and few bract-like smaller leaves toward inflorescence.
    • Basal leaves nearly perpendicular to stem, sessile, ovate, oblong to lanceolate, 3-6 cm long, 1.2-3 cm wide, acute to acuminate at apex, truncate and embracing stem at base.
    • Inflorescence 3-10 cm long, 3-10-flowered; bracts lanceolate, 10-15 mm long, 3-5 mm wide, acute or acuminate, lower ones larger; pedicel and ovary 10-16 mm long. Flowers greenish; dorsal sepal deltoid, 5-7 mm long, 4-4.5 mm wide, apex obtuse, 3-nerved; lateral sepals reflexed, obliquely linear-lanceolate, 7-9 mm long, 1.3-2 mm wide, acute or obtuse at apex; petals spreading, not forming hood with dorsal sepal, obliquely ovate-lanceolate, 6-8 mm long, 3.5 mm wide, acute or obtuse; lip fleshy, descending, linear-lanceolate, 8-10 mm long, 2-2.5 mm wide, apex obtuse, slightly dilated into square base, spur cylindrical, slightly curved, 12-18 mm long, obtuse or sharp at tip; column 3-4 mm tall; anther cells clavate, 2.5 mm long, widely separated and somewhat divergent at bases, staminodes elongate ellipsoid, 1.5 mm long; pollinia ovoid-ellipsoid, 1.5 mm long, caudicle ca. 1.5 mm long, viscidium orbicular discoid; stigma concave, transversely broad; rostellum narrow tape-like, slightly curved, situated between connective and stigma.

    分布

    Taiwan: Moist grasslands and forest edges, also in moss on wet rocks, 1,600-2,700 m.

    引證標本

    TAIPEI: Peichiatienshan, Lin 145. ILAN: Chilanshan, Lin 223; Logging road no. 170, Su & Chen 8295. PINGTUNG: Peitawushan, Su 9358.

    資料來源

    SU, Horng-Jye. 2000. 38. ORCHIDACEAE. Flora of Taiwan, second edition (台灣植物誌第二版). 5: 1013.

    本種於 1980 年由 T. P. Lin & K. Inoue 在台灣記錄到後,目前已有 1 種學名、 1 種中文名及 0 種其他語言俗名曾在台灣被使用。

    本種共有 1 份 典藏標本

    <em>Platanthera mandarinorum</em> Rchb. f. ssp. <em>formosana</em> T. P. Lin & K. Inoue惠粉蝶蘭