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Fimbristylis umbellaris

繖形飄拂草

Fimbristylis umbellaris (Lam.) Vahl
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名彙資訊

學名發表文獻

Vahl, Enumeratio Plantarum 2: 291. 1805.  (Enum. Pl.)

台灣首次記錄發表文獻

Koyama, Flora of Taiwan 5: 281. 1978.  (Fl. Taiwan, 台灣植物誌)

異名

  • Fimbristylis hypsocolea Hosokawa
    Hosokawa, Transactions of the Natural History Society of Formosa 28: 152. 1938.  (Trans. Nat. Hist. Soc. Formos., 台灣博物學會會報)
  • Fimbristylis globulosa (Retz.) Kunth var. austrojaponica Ohwi
    Ohwi, Memoirs of the College of Science, Kyoto Imperial University. Series B. Biology 18: 71. 1944.  (Mem. Coll. Sci. Kyoto Imp. Univ., Ser. B, Biol.)
  • Fimbristylis globulosa (Retz.) Kunth
    Koyama, Journal of the Faculty of Science, Imperial University of Tokyo. Section III, Botany 8(3): 109. 1961.  (J. Fac. Sci. Univ. Tokyo, Sect. 3, Bot., 東京帝國大學理學部紀要, 第三類, 植物學)

各語言俗名

特徵描述

生活型

herb

形態特徵

  • Perennial with short, horizontal rhizome, clothed with brownish scales; culms densely tufted, obtusely trigonous, 20-90 cm by 1-5 mm, smooth, glabrous, light green, clothed at base with 2 or 3 bladeless sheaths.
  • Leaves cauline reduced to bladeless sheath, sterile shoot ones usually short-bladed; sheaths cylindrical, 2-18 cm long, obliquely truncate at orifice; balde linear when well-developed, 7-25 cm by 1.5-2 mm; ligule absent.
  • Inflorescence simple to compound, 2-10 cm by 1.5-7 cm; involucre 2-3, narrowly lanceolate, margins scarious, longest 0.5-1 cm long; primary branche 2-10, unequal, 1-5 cm long. Spikelets 3-40 per inflorescence, solitary, broadly ovate to broadly elliptic, 3-8 mm by 3-4 mm wide, obtuse, terete, densely many-flowered.
  • Glumes many per spikelet, spiral, ovate to ovate-elliptic, 1.8-2.7 mm by 1-1.5 mm, obtuse to mucronate, membranaceous, yellow- or rusty-brown, scarcely keeled, 3-nerved in center. Stamens 2-3; anthers c. 0.5 mm long. Style triquetrous or trifid, glabrous, dilated at base; stigmas 3, rarely 2. Achenes obovate or obovate-orbicular, 0.8-1 mm by 0.5-0.7 mm, shortly stiputate, maturing milky-yellow, obscurely cancellated with transversely oblong cells, rarely sparsely verruculose.

分布

  • 台灣 : in marshy places, rice fields and wet grasslands.
  • 世界 : India, Indochina, southern China, Japan, Malesia, Micronesia and Polynesia.

引證標本

TAIPEI: Nankang, Kuoh 2219. NANTOU: Sun Moon Lake, Hsu 12450.

引用文獻

典藏標本

共有 1 份典藏標本 所有標本模式標本

    118668
    Palau (帛琉)

    共有 1 份典藏標本所有標本模式標本

      118668
      Palau (帛琉)

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