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廣西泉七檢視原始碼討論檢視歷史

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 廣西泉七

中文名:廣西泉七

拉丁學名:Steudnera kerrii Gagnepain

界:植物界

門:被子植物門 Angiospermae

綱:單子葉植物綱 Monocotyledoneae

目:天南星目 Arales

科:天南星科 Araceae

族:芋族 Trib. Colocasieae

屬:泉七屬 Steudnera

分布區域:中國廣西

廣西泉七(guǎng xī quán qī,學名:Steudnera kerrii Gagnepain),為單子葉植物綱天南星科泉七屬下的一個植物種。多年生草本,產於廣西。泰國也有分布。 [1]

形態特徵

Herbs, evergreen. Stem rhizomatous, epigeal, erect, later decumbent with age, 2-40 × 1-1.5 cm, densely covered with tattered cataphyll and leaf remains, older parts eventually naked.

Leaves solitary to several together at shoot tips; petiole pale green, terete, 35-40 cm × 3-7 mm, sheath very short;

leaf blade strongly glaucous abaxially, deep olive-green adaxially, peltate, ovate, 10-35 × 8-14 cm, membranous, base emarginate, sinus very shallow, posterior lobes almost absent, apex cuspidate.

Inflorescence solitary, very strongly fragrant of naphtha; peduncle mid-green, terete, 6-12 cm.

Spathe outside deep yellow, inside deep purple, lanceolate, 9-10 × 2-5 cm, reflexed on opening, apex long acuminate, distal part soon withering, marcescent, proximal part persistent into fruiting.

Spadix ca. 2.5 cm × 5 mm; female zone pale creamy white, cylindric, dorsally adnate to spathe; pistil subglobose, 2-3 mm high, 0.5-1 mm in diam.; style very short;

stigma 4-lobed, exceeding style width, style and stigma tinged purple; male zone pale creamy white, clavate, free;

synandria 4-6-androus, 1-2 mm high, 1.5-2.5 mm in diam., 10-16-lobed, shortly stipitate.

Infructescence consisting of few to many berries partially covered by persistent spathe base. Berry ripening dull red, ovoid, 6-11 × 4-7 mm.[2]

生境產地

Wet areas in seasonal evergreen forests, almost always associated with limestone; 400-600 m. SW Guangxi [N Thailand, N Vietnam].[3]

辨析

One of us (Boyce) has collected Steudnera kerrii on the Chinese border in N Vietnam. The population almost certainly extends into adjacent Guangxi.One of us (Boyce) has collected Steudnera kerrii on the Chinese border in N Vietnam. The population almost certainly extends into adjacent Guangxi.

參考來源

  1. 廣西泉七, 植物智, 2020-01-18
  2. 廣西泉七 Steudnera kerrii (1941) 中文名: 廣西泉七 異名: 別名: 分類系統: 界Plantae 門Angiospermae 綱Magnoliopsida 目Alismatales 科Araceae 屬Steudnera 分布地: Guangxi 分布地(...
  3. FOC >> Vol.23 (2010) >> Araceae >> Steudnera | eFloras.org Link