討論:西施花
山羊百科,林文智老師的植物、山岳、攝影紀錄
6. Leaves 10-12 cm long; bud scales pubescent; calyx ciliate on the margins,緣被羽狀腺毛 .......20. R. tanakai
6. Leaves 7-10 cm long; bud scales glabrous,緣被捷毛; calyx not ciliate ............2. R. ellipticum
2. Rhododendron ellipticum Maxim 西施花(青紫木)
Rhododendron leptosanthum Hayata, Icon. Pl. Form. 3: 137. 1913; Kanehira, Form. Trees 319.f. 2. 323. 1917; Mori in Masamune, op. cit. 160. 1936.
A small shrub, the branches slender, rigid, glabrous; winter buds clustered, acute, glabrous, the scales ciliolate. Leaves glabrous, subcoriaceous, clustered at ends of branches, oblanceolate-oblong to oblong-lanceolate, 6-12 cm long, 2-4.5 cm broad, the apex acute or short-acuminate, mucronulate, the base narrowed, cuneate, the margins more or less recurved, the upper surface lustrous dark green, the lower pale green to pallid, the secondary veins spreading; petiole 0.5-1.5 cm long, glabrous. Flowers 2-3-clustered around ends of branches, lateral; pedicels 2.5-3.5 cm long, glabrous; calyx glabrous, annular, 5-toothed, the teeth unequal and variable, 2-4 mm long; corolla pink, funnelform- campanulate, about 5-6 cm long and broad, deeply 5-lobed, the lobes spatulate to obovate, rounded; stamens 10, included, the filaments flattened and villous in the lower half; ovary cylindric, glabrous; style stout, equaling the stamens in length, glabrous, the stigma capitate.
The Ryukyus to Fukien. In Taiwan, common in broad-leaved forests at 160-2,600 m throughout the island.
TAIPEI: Sasaki s. n. in 1911 (Type of R. leiopodum Hayata), Faurie 163, 1871. KAOHSIUNG: Kawakami s. n. in 1904 (Type of R. leptosanthum Hayata).
20. Rhododendron tanakai Hayata 阿里山石楠
- Rhododendron tanakae Hayata → Rhododendron latoucheae Franch.
A shrub or small tree 2-6 m tall, the branches nearly whorled, slender, rigid, glabrous; bud scales acute, gray-pubescent, ciliolate. Leaves thinly coriaceous, glabrous, clustered at the ends of the branches, lanceolate-oblong, 5-12 cm long, 1.5-4 cm broad, the apex acute or short-acuminate, apiculate, the base narrowed, cuneate, the margins slightly recurved, the upper surface lustrous dark green, the lower pale green, the secondary veins 6-8 per side, spreading, inconspicuous; petiole glabrous, 1-1.8 cm long. Flowers 3-5-fascicled, the fascicles lateral, near the end of branches, 1-flowered; pedicels glabrous, spreading, 2.5-3 cm long; calyx discoid, with 5 minute, rounded, pectinate-ciliate teeth; corolla pink, funnelform-campanulate, about 5 cm long and broad, deeply 5- lobed, the lobes spreading; stamens 10, included, the filaments papillose- pubescent on the lower half; ovary cylindric, glabrous. Capsules dark brown, cylindric, 2-3.5 cm long.
Endemic. Very local in occurrence; known so far from Alishan only, common at 1,650-2,650 m, on cliffs and among rocks in the open, forested regions.
CHIAYI: Mt. Alishan, Wilson 9725, Hayata & Tanaka s. n. in 1914.
This species is very near R. ellipticum Maxim, differing chiefly in its shorter but broader leaves, pectinate-ciliate calyx, and pubescent winter buds.
セイシカ Rhododendron latoucheae
アマミセイシカ Rhododendron latoucheae var. amamiense
5, 花序具花1-2朵。
10, 叶卵状椭圆形或长圆披针形,长5-8厘米,宽2.5-5.5厘米;芽鳞边缘具微柔毛或细腺点;花粉红色。, 鹿角杜鹃, Rhododendron latoucheae Franch.
10, 叶狭椭圆状披针形或倒披针形,长7-11.2厘米,宽1.4-3厘米;芽鳞边缘具细睫毛;花粉红色至白色。, 西施花, Rhododendron ellipticum Maxim.
267. 鹿角杜鵑 Rhododendron latoucheae Franch.
- 常綠灌木或小喬木,高2-3(-5)米;小枝開展,灰色或淡白色,無毛。葉集生枝頂,近於輪生,革質,卵狀橢圓形或長圓狀披針形,長5-8(-13)釐米,寬2.5-5.5釐米,先端短漸尖,基部楔形或近於圓形,邊緣反卷,上面深綠色,具光澤,下面淡灰白色,中脈和側脈顯著凹陷,下面凸出,兩面無毛;葉柄長1.2釐米,無毛。花芽長圓狀錐形,頂端銳尖,鱗片倒卵形,外面無毛,邊緣具微柔毛或細腺點。花單生枝頂葉腋,枝端具花1-4朵;花梗長1.5-2.7釐米,無毛;花萼不明顯;花冠白色或帶粉紅色,長3.5-4釐米,直徑約5釐米,5深裂,裂片開展,長圓形,頂端微凹,被微柔毛,花冠管長1.2-1.5釐米,向基部漸狹;雄蕊10,不等長,長2.7-3.5釐米,部分伸出花冠外,花絲扁平,中部以下被微柔毛;子房圓柱狀,長7-9毫米,褐色,具縱溝,無毛,花柱長約3.5釐米,無毛,柱頭5裂。蒴果圓柱形,長3.5-4釐米,直徑約4毫米,具縱肋,先端截形,花柱宿存。花期3-4月,稀5-6月,果期7-10月。
產浙江、江西、福建、湖北、湖南、廣東、廣西、四川和貴州。生於海拔1 000-2 000米的雜木林內。模式標本采自福建。 上海植物园 武汉植物园 湖南张家界 安徽省宣城市绩溪县 浙江省丽水市丽水市 湖南省长沙市长沙市市区周边 湖南省长沙市长沙市中南林业科技大学 湖南省衡阳市衡山县树木园至藏经殿 浙江省丽水市庆元县百山祖 广东省广州市天河区华南植物园 湖南省湘西州永顺县 浙江省杭州市临安市清凉峰 江西省上饶市德兴市梧风洞景区 浙江省杭州市临安市大明山 湖南省怀化市中方县 浙江省杭州市杭州市杭州植物园
本種與西施花R. ellipticum Maxim. 相近,但不同在於本種的葉卵狀橢圓形或長圓狀披針形;花芽鱗片邊緣被微柔毛或細腺點,易於區別。 作者仔細研究鄂西杜鵑 R. wilsonae Hernsl. et Wils. 及其變種紫蘭花杜鵑 R. wilsonae Hemsl. et Will. var. ionanthum Fang模式標本的特徵,認為與鹿角杜鵑相同,故將此二種歸併于鹿角杜鵑之中。
- 葉柄具溝紋,花冠散生黃色斑點,裂片倒卵狀長橢圓形,
268. 西施花 Rhododendron ellipticum Maxim.
- 常綠灌木,高2-3米;幼枝粗壯,直徑2.5毫米,幹後淡紫色,無毛,老枝灰褐色。葉革質,常5-7輪生枝頂,狹橢圓狀披針形或倒披針形,長7-11.2釐米,寬1.4-3釐米,先端短漸尖,基部狹楔形,邊緣微反卷,上面幹後深褐色,有光澤,下面蒼白色,兩面無毛,中脈在上面凹陷,下面凸起,側脈和細脈在兩面稍凸起;葉柄長達1.5厘,無毛。花序側生枝端葉腋,具花1-2朵;花梗粗壯,基部關節明顯,長約3.5釐米,無毛;花萼裂片不明顯,常呈三角狀小齒,稀發育為線狀,長達1釐米,邊緣及先端具細睫毛;花冠漏斗形,粉紅色至白色,長4.8釐米,5裂,裂片長卵形,無毛;雄蕊10,不伸出於花冠外,花絲扁平,中部以下被短柔毛;子房圓柱形,長8毫米,寬2毫米,黑褐色,無毛,花柱褐色,長4.8釐米,伸出於冠外,無毛。蒴果圓柱形,長4釐米,直徑4毫米,先端截平,花柱脫落,無毛。花期4-5月。
特產臺灣。生於海拔160-2 600米的石質山坡上。模式標本采自臺灣。
本種與鹿角杜鵑 R. latoucheae Franch. 相似,但本種的葉系狹橢圓狀披針形或倒披針形;花1-2朵側生枝頂葉腋;花芽鱗片邊緣具細睫毛,易於區別。
- 葉芽光滑無毛,葉柄略溝紋,花冠散生紫紅色斑點,裂片舌形或倒卵形
- 別稱青紫木、阿里山杜鵑。
- 常綠性小喬木。葉長橢圓狀倒披針形至長橢圓狀披針形,叢生枝梢。莖頂萌發2~5朵白色至淡紅色花,花冠漏斗形,5深裂,裂片匙形至倒卵形,雄蕊10枚,離生。花型大、色澤美,花如其名,像西施一樣美的杜鵑花。
- 族群分布:海拔200~2400m山區,植株散生於闊葉林與針闊葉混合林,中海拔的國家森林遊樂區步道都可以輕鬆見到植株蹤影。
- 最佳賞花地點:東眼山國家森林遊樂區自導式步道與親子峰步道;阿里山國家森林遊樂區觀日步道入口、阿里山賓館、慈雲寺;藤枝國家森林遊樂區的瞭望台步道C段及太平山國家森林遊樂區的原始森林公園、翠峰湖景觀道路與步道等地區是最佳賞花與拍攝地點。
- 最佳賞花時間:西施花的萌芽期與花期最容易吸引遊客的目光,4月至5月是花季高峰期,淡紅色至暗紅色嫩葉,也是吸引遊客的焦點。
沖縄県西表島、 石垣島の植物,バンナ公園ではセイシカの橋という場所があり、その橋の周辺に植えられたセイシカをご覧頂ける事が出来ます。、