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Pycreus sulcinux

墾丁扁莎

Pycreus sulcinux (C. B. Clarke) C. B. Clarke
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名彙資訊

學名發表文獻

C. B. Clarke, The Flora of British India 6: 593. 1893.  (Fl. Brit. Ind.)

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

各語言俗名

特徵描述

生活型

herb

形態特徵

  • Rather low annual, tufted with red-brown fibrous roots. Culms slender, 5-(-35) cm tall, smooth.
  • Leaves 2-4 to a culm, narrowly linear, 1/4 to nearly as long as culm, 0.5-2 mm wide; sheaths to 4 cm long, stained with reddish or brownish purple.
  • Corymbs simple, lax to subdense, rarely subcapitate, 1-7 cm long and as wide; bracts 3 or 4, longer ones equalling corymb, longest to 15 cm long; rays 2-6, short or to 7 cm long. Spikes ovoid-globose, bearing 4-10 spikelets on short rachis. Spikelets divergent, linear to linear-lanceolate, 12.5 cm long, 1-1.5 mm wide, flattened, straw-colored, acute, 10-55-flowered; rachilla narrowly winged.
  • Glumes erect-patent, oblong-obovate to ovate, 1.5-1.8 mm long, 1-1.3 mm wide, keeled, obtuse, nerveless sides stramineous to straw-brown, with rather broad pale hyaline margins, keel greenish, 3-nerved. Achenes oblong, laterally lenticular, 1.25-1.3 mm long, 0.5 mm wide, longitudinally furrowed on both sides, truncate at apex, brown, puncticulate; style 0.5 mm long, 2-cleft.

分布

  • 台灣 : Open semi-dry grounds at low altitudes.
  • 世界 : Tropical Asia, from India to southeastern mainland China and Taiwan, and eastwards to Australia.

引證標本

PINGTUNG: Kentin, Kuoh 2151.

參考文獻

典藏標本

共有 1 份典藏標本

    025622
    鈴木 Suzuki, Kamikoti
    雲林 Yunlin

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