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資料編號: | HK-5752 |
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中文名稱: | 雲南叉柱蘭# |
學名: | Cheirostylis yunnanensis var. yunnanensis [找同屬植物] |
植物科名: (APG新系統) | ORCHIDACEAE蘭科 [找同科植物] |
標室舊系統 | ORCHIDACEAE蘭科[找同科] |
生長習性: | 草本 |
圖片花色: | white |
發現開花: | March |
資料更新: | 20240316 11:35:58 pm |
備註: #標室沒收錄-香港攝 Reference 香港野地生態摘記: 《香港植物誌》中將雲南叉柱蘭 Cheirostylis yunnanensi var.yunnanensi鑑定為 C. chinensis 中華叉柱蘭,惟《The Wild Orchids of Hong Kong》並不認同,在比對國外館藏,發現與 C. yunnanensis 雲南叉柱蘭完全吻合,推翻前者結論。就台灣所見的 C. chinensis 中華叉柱蘭比較,本種唇瓣較大,裂片齒數較多,個人意見或可以下列列表作區分︰ C. chinensis 中華叉柱蘭 唇瓣:長 7–8 mm 蕊柱臂狀附屬物:較蕊喙的裂片稍短 裂片:縱裂 1/2–2/3 唇辨長度,4–5 齒 裂片斑點:長圓形 C. yunnanensis 雲南叉柱蘭 唇瓣:長 10–12 mm 蕊柱臂狀附屬物:與蕊喙的裂片等長或稍長 裂片:深裂,5–7 不整齊齒 裂片斑點:囊狀,於裂口處往外彎曲並膨大 REF:pwflora.blogspot.com 別名:大花石上藕、大毛蟲蘭 香港野生地生蘭,生於較高海拔的林下濕潤處。之前一直認為是中華叉柱蘭 (Cheirostylis chinensis),但本種的花比之明顯更大。 匍匐根狀莖肉質,狀如蓮藕,故名大花石上藕;總狀花序頂生,總花梗被毛,包括唇瓣在內的花瓣白色,唇瓣前部擴大成扇狀,2裂,邊緣具裂條 (或長齒)。 據香港野生蘭花 (The Wild Orchids of Hong Kong) 一書,本種現況屬瀕危 (EN)。 FOC(eng.): Plants 10-18 cm tall. Rhizome moniliform, 1-3.5 × 0.6-1.5 cm; roots in broad, raised bands along rhizome internodes. Stem pale green, usually less than 1 cm, 2- or 3-leaved. Leaves congested, often withered or absent at anthesis, green, ovate, 1.5-3.5 × 0.8-2 cm, membranous, base subrounded, apex acute; petiole-like base and sheath 0.6-1.5 cm. Inflorescence 8-16 cm, sparsely villous, with 3 or 4 sterile bracts; rachis 0.4-2 cm, 2-5(-10)-flowered; floral bracts ovate, concave, 5-6.5 mm, shorter than ovary, abaxially villous, apex acuminate. Flowers often erect; ovary cylindric-fusiform, 7-9 mm including pedicel, sparsely villous. Sepals 5-6.5 mm, basal 1/2 connate and forming a tube, membranous, outer surface sparsely villous, 1-veined; free apical lobes triangular-ovate, 2.5-3 mm, apex subobtuse. Petals appressed to dorsal sepal, white, narrowly oblanceolate-oblong, oblique, 5-6.5 × 1.5-1.8 mm, membranous, 1-veined, entire or sometimes with 2 or 3 obtuse teeth, apex obtuse; lip erect, white, 9-12 mm, 3-partite; hypochile saccate, containing 2 comblike calli, each callus 3- or 4-toothed; mesochile ca. 2 mm, narrow, with 2 lamellae; epichile with green spots at base, flabellate, 5-6 mm, deeply 2-lobed; lobes 4-6 mm wide, margin irregularly 5-7-dentate, teeth triangular with acute tips. Column ca. 2.5 mm; stelidia erect, nearly as long as rostellum arms; anther ovoid, ca. 1 mm; rostellum arms ca. 1.5 mm. Fl. Mar-Apr. | |
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