討論:高山白珠樹

山羊百科,林文智老師的植物、山岳、攝影紀錄

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1. Gaultheria itoana Hayata 高山白珠樹

A small evergreen shrub; stems and branchlets pubescent to glabrescent. Leaves thickly chartaceous, short-petiolate, oblong, 10-15 mm long, 3-7 mm broad, acute to obtuse, acute at base, serrate and slightly recurved on margins, glabrous, the midrib and veins impressed to indistinct above, slightly raised to obscure beneath, the lateral veins 2-3 per side, inconspicuous; petioles scarcely 1 mm long. Flowers in pseudo-terminal racemes about 2 cm long; pedicels 2-3 mm long; bracts usually 2, ovate, about 2 mm long, acute, pubescent, persistent; calyx 5-lobed, the lobes ovate; corolla white, ovoid-tubular, 4-5 mm long, the lobes minute; ovary pubescent. Berry globose, white, about 6 mm thick.

Endemic, in central ranges, on high mountain peaks in open places at altitudes of 2,250-3,600 m or higher.

ILAN: Taipingshan, Keng 1210. TAICHUNG: Hsiaohsuehshan, Liu et al. 298. NANTOU: Luantashan, Kawakami & Hayata s. n. in 1908. CHIAYI: Mt. Alishan, Keng 1154; Yushan, Mori 1887. HUALIEN: Nengkaoshan, Bartlett 6213; Mukuashan, Liu et al. 276.

Gaultheria itoana is very close to G. borneensis Rendle (Including G. benguetensis Copel.) of the Philippines and Borneo, but differs by a shorter distinctly globose-suburceolate corolla (see Sleumer, Fl. Males. I. 6(5): 679. 1967).

Co's Digital Flora of the Philippines

25.臺灣白珠 Gaultheria taiwaniana S. S. Ying in Quart. Journ. Chin. For. 9(4): 136. 1976.

小灌木,莖枝無毛,纖細,高10-30釐米。葉長圓形、卵狀長圓形或長圓狀披針形,長1-1.5釐米,寬4-7毫米,先端鈍或漸尖,基部楔形,革質,兩面無毛,邊緣上部有小鋸齒,下部全緣,中脈在背面隆起,在表面下陷,側脈每邊2-3,在背面稍明顯;葉柄長1-2毫米,無毛。花單生葉腋,苞片卵形,長1-2毫米,寬0.5-0.8毫米,先端急尖,全緣,花梗長3-4毫米,纖細,無毛;花萼倒圓錐形,小,綠色,5裂,裂片三角形,長1-1.5毫米,先端急尖;花冠壇形,白色,長3.5-4.5毫米,寬3-3.5毫米,先端縊縮明顯,5裂,裂片小,卵狀三角形,長0.2-0.3毫米,先端鈍;雄蕊10枚,內藏,著生於花冠基部,花絲長約1.5毫米;子房球形,被短柔毛,花柱絲狀,長約1毫米。果未見。

產我國臺灣。模式標本采自南投合歡山。

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