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| 資料編號: | HK-6575 |
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| 中文名稱: | 閉花天麻# |
| 中文別名: | 閉花赤箭(台灣名稱) |
| 學名: | Gastrodia clausa [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: | 腐生草本 |
| 圖片花色: | brown_black |
| 發現開花: | Feb_March |
| 特別特徵: | 2020年香港新發現的4隻新種 |
| 資料更新: | 20240311 12:59:30 pm |
| 備註: 天麻屬 Gastrodia #:標室沒收錄 香港近年已發現另一種腐生蘭—閉花天麻（台灣稱為閉花赤箭），不過尚未公開發表. thanks Berry Chu's info Reference link Reference photos Four new additions and a taxonomic amendment to the orchid flora of Hong Kong Miniature leafless, holomycotrophic herb up to ca. 4 cm tall in flower, elongating to ca. 37 cm tall in fruit. Rhizome not seen. Peduncle erect, 8–12 mm long, 2–4- noded, dark brown flushed pinkish-brown, scabrous, with a small sheathing scale-like bract at each node; rachis erect, 2–7 mm long, dark brown, bearing 1–3 flowers; floral bracts ovate, 5–7 mm long, 4–6 mm wide, apex sub-acute, dark brown. Flowers erect, tubular, cleistogamous; pedicel and ovary erect, 7–12 mm long, slightly grooved, dark brown flushed pinkish-brown at base; pedicel elongating to ca. 35 cm in fruit; sepals, petals and labellum connate for ca. 2/3 of their length and forming a perianth tube; perianth tube not opening or sometimes with a very small aperture at apex, 8–13 mm long, 4.5–6 mm in diameter, slightly flared above the middle, dark brown, outer surface verrucose, obscurely lobed at apex; apical lobes of sepals triangular-ovate, 3–4.5 mm long, slightly concave and converging to a point; apical lobes of petals ovate, slightly oblique, 3–3.5 mm long, apex rounded, light brown; labellum petaloid, fused to the perianth tube like the petals, the free portion orbicular-ovate, 3–3.5 mm long, 2.5–3 mm wide, lateral margins slightly erose, apex rounded, light brown; column clavate, straight, 5– 6.5 mm long, pale yellowish-white, ventrally with a prominent appendage and a pair of broad, low, rounded, bright orange wings that terminate in projecting acute stelidia; appendage attached to the reduced column-foot at base, held parallel to the column, ovate-rhombic, ca. 5 mm long, apex bifid, bright orange; anther globular, ca. 1.2 mm in diameter, containing 2 mealy pollinia; rostellum reduced; stigma placed midway along the column on ventral surface, broadly ovate. Capsule erect, fusiform, up to ca. 2.5 cm long, dark brown with pinkishbrown suture lines. | |
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