Peristylus formosanus

台灣鷺草

Peristylus formosanus (Schltr.) T. P. Lin

名彙資訊

特徵描述

典藏標本

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T. P. Lin, Native Orchids of Taiwan 2: 274. 1977. (Native Orch. Taiwan)

同發表文獻

Coeloglossum formosanum Makino & Hayata ex Hayata

Hayata, Enumeratio Plantarum Formosanarum 420. 1906. nom. nud. (Enum. Pl. Formos.)
Habenaria tentaculata Rchb. f. var. acutifolia Hayata

Hayata, Materials for a flora of Formosa 354. 1911. (Mat. Fl. Formos.)
Habenaria formosana Schltr.

Schltr., Repertorium specierum novarum regni vegetabilis 4: 127. 1919. (Rep. Sp. Nov. Regni Veg.)
Habenaria brevicalcarata Fukuy.

Fukuy., Transactions of the Natural History Society of Formosa 42. 1935. (Trans. Nat. Hist. Soc. Formos., 台灣博物學會會報)
Habenaria lacertifera auct. non (Lindl.) Benth.

Fukuyama, Short Flora of Formosa 293. 1936. (Short Fl. Formos., 最新台灣植物總名錄)
Peristylus flagellifer (Makino) Ohwi var. acutifolius (Hayata) Hatusima

Hatusima, Flora of Ryukyus 840. 1971. (Fl. Ryukyus)
Peristylus lacertiferus (Lindl.) J. J. Smith var. formosana (Makino & Hayata) S. S. Ying

Ying, Coloured illustrations of indigeous orchids of Taiwan 2: 631. 1990. (Col. Ill. Indig. Orch. Taiwan, 台灣蘭科植物彩色圖鑑)
Peristylus tentaculata auct. non (Lindl.) J.J. Sm.

Ormerod, Taiwania 56(1): 46. 2011.

herb

Plants 20 to 45 cm high. Tuberoids globose to ovoid, 1-2 cm long. Stems often concealed by leaves, leafy near ground, sheathing below.
Leaves 2-4, closely clustered or slightly spaced, green on upper surface, pale on lower surface, oblong or lanceolate, 6-10 cm long, 2-3 cm wide, apex acute.
Peduncle straight and slender, 10-15 cm long, with many linear-lanceolate scales; rachis 10-20 cm long; bracts ovate-lanceolate, 8-12 mm long, 2-3 mm wide, acuminate; pedicel and ovary closed to rachis, 8-10 mm long. Flowers 20 or more, whitish; dorsal sepal concave, ovate, 4 mm long, 2.5 mm wide, apex obtuse; lateral sepals oblong, 4-5 mm long, 2 mm wide, apex acute, slightly concave near base; petals ovaterhombic, 5 mm long, 3 mm wide, apex acute, contracted at base; lip 3-lobed from near spurred base, lateral lobes horizontally spreading, perpendicular to central lobe, filiform, 5-12 mm long, central lobe ligulate, 2-3 mm long, apex obtuse, disc with round callus, spur ovoid, 2 mm long, with narrow mouth on lip-base; column ca. 1.5 mm tall, with small auricle on both sides; anther cells 1.5 mm long, rather close; pollinia obovoid, 1 mm long, caudicle 0.3 mm long, viscidia oblong; stigma shortly cylindrical, placed beside auricle; rostellum protruding from between base of anther cells, narrowly horse-shoe shaped, with longitudinal slit and 2 short diverging lateral arms.
Capsules fusiform, ca. 1 cm long.