資料編號: | HK-6987 |
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中文名稱: | 錨鈎金唇蘭(2020年新種記錄) |
學名: | Chrysoglossum assamicum [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 |
特別特徵: | 2020年香港新發現的4隻新種 |
資料更新: | 20230406 11:54:03 pm |
備註: Reference: 香港野地生態摘記 生境︰林蔭潮濕處; 花期︰4–6月;假球莖相距 1–2 cm,一葉;葉5脈,葉基楔形,葉尖短尖;葉柄約 10 cm;花綠帶啡紅斑點,唇瓣黃白帶紫點;一菖花約10朵 本種於 2015 年末首見於網上,後證實為本港新屬新種。與帶唇蘭屬(Tainia)易混淆,惟前者假球莖距離較長,葉脈亦明顯清晰,葉柄亦較長,或可作初步判別。本種曾由金唇蘭屬(Chrysoglossum)歸入吻蘭(Collabium)屬。 Four new additions and a taxonomic amendment to the orchid flora of Hong Kong Terrestrial herb up to 90 cm tall. Rhizome creeping, cylindrical, 3–12 mm in diameter, dark olive-green, irregularly many-noded, each internode 2–11 mm long and producing 1 wiry root up to 9 cm long, each node bearing the remnants of a caducous papery sheath. Pseudobulbs placed at 2–5 cm intervals along the rhizome, cylindrical to narrowly conical, dark olive-green, either vegetative (leafbearing) or generative (inflorescence-bearing); vegetative pseudobulbs 2.5–5 cm long, 0.5–1.3 cm in diameter, enclosed in fibrous sheath; generative pseudobulbs 1–3 cm long, 0.4–0.8 cm in diameter. Leaf solitary, ellipticlanceolate, 14–35 cm long, 4–10 cm wide, papery, plicate, prominently veined, base cuneate, apex acuminate-acute, dark green, borne on a slender petiole-like stalk 3–9.5 cm long. Inflorescence erect, 40–90 cm long, terete, dark purplish-brown flushed green, bearing 2 or 3 scattered sterile bracts, laxly 10–24-flowered, arching slightly or curved downwards at apex; floral bracts narrowly triangular, 12–16 mm long, apex acuminate. Flowers patent, opening widely; pedicel and ovary curved, 15–18 mm long, 2–3 mm in diameter, light green; sepals and petals pale yellowishgreen flushed white at base with purple flecks and blotches; dorsal sepal linear-oblong, curving forwards, 14–17 mm long, 2.5–3.2 mm wide, apex acute-acuminate; lateral sepals linear-oblong, falcate, 17–19 mm long, 2.3–2.8 mm wide, slightly expanded and attached to column-foot at base, lower margin somewhat in-rolled, deflexed towards apex, apex acute; petals oblong, falcate, 16–19 mm long, 4.5–5 mm wide, arching over the column, slightly reflexed towards apex, apex obtuse; labellum broadly oblong-ovate, 12–14.2 mm long, 7.5–10 mm wide, 3-lobed, attached to column-foot and with a spur at base, strongly deflexed at the middle, white with purple blotches on side lobes and mid-lobe; hypochile 4.5–5.5 mm long, slightly saccate at base, lateral margins raised and distinctly twice-pleated; side lobes raised, broadly ovate, 3.8–4 mm long, 3.8–4.5 mm wide, apex rounded; mid-lobe broadly elliptic-ovate, 3.4–4.5 mm long, 5.8–7.8 mm wide when flattened, lateral margins and most of the apical margin in-rolled; disc bearing 3 tall, slightly fleshy keels, the median one straight and terminating slightly above the base of the side lobes, the lateral ones straight at base then diverging and curved at apex, terminating just below the middle of the mid-lobe; spur projecting backwards, slightly curved in horizontal plane, 5–6 mm long, not tapering, apex rounded; column elongate, 7–9 mm long, curving forwards, slightly expanded at base, ventrally with a pair of parallel keels in lower half and a pair of prominent hooked wings slightly above the middle, white flushed orange-yellow at base and yellow at apex; wings 1–1.5 mm long, spotted purple at apex; column-foot 2–2.5 mm long, with a slit-like opening to the spur at middle and a pair of globular, orange-yellow calli below; anther broadly helmet-shaped, 1–1.2 mm long; pollinia 2, obovoid; rostellum broad, raised; stigma semicircular, with a pair of narrowly conical teeth on basal margin. | |
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