討論:西施花
山羊百科，林文智老師的植物、山岳、攝影紀錄
- 長卵葉馬銀花 Rhododendron lamprophyllum Hayata
- 青紫木 Rhododendron ellipticum Maxim. ／ 沖繩
- 西施杜鵑 Rhododendron leptosanthum Hayata ／ 阿里山、浸水營
- 大屯杜鵑 Rhododendron leiopodum Hayata ／ 大屯山～馬拉邦山
- 阿里山杜鵑 Rhododendron tanakai Hayata ／ 阿里山
- 台灣樹木誌 Formosan Trees : indigenous to the island (revised) 1936
- Rhododendron leiopodum Hayata 金平亮三 台灣樹木誌 Formosan Trees : indigenous to the island (revised) https://tai2.ntu.edu.tw/ebook/ebookpage.php?book=Formos.%20Trees%20rev.%20ed.&volume=0&list=15475
- Rhododendron ellipticum Maxim.
- Rhododendron tanakai Hayata 金平亮三 台灣樹木誌 Formosan Trees : indigenous to the island (revised) https://tai2.ntu.edu.tw/ebook/ebookpage.php?book=Formos.%20Trees%20rev.%20ed.&volume=0&list=15484
- 第一版
6. Leaves 10-12 cm long; bud scales pubescent; calyx ciliate on the margins， .......20. R. tanakai
6. Leaves 7-10 cm long; bud scales glabrous; 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.
- 第二版
2. Rhododendron ellipticum Maxim., Bull. Acad. Sci. St. Petersb. 32: 497. 1888, Li, Fl. Taiwan 4: 24. 1978; Lu & Yang, Taiwan For. Res. Inst. New Series, 4(4): 155. 1989. 西施花
Rhododendron ellipticum Maxim. Var. leptosanthum (Hayata) Ying, Quart. J. Chin. Forest. 9(4): 122.1976.
Small shrubs; branches slender, rigid, glabrous; winter buds clustered, acute, glabrous, scales ciliolate. Leaves subcoriaceous, clustered at ends of branches, glabrous, oblanceolate-oblong to oblong-lanceolate, 6-12 cm long, 2-4.5 cm broad, apex acute or short acuminate, mucronulate, base narrowed, cuneate, margin more or less recurved, upper surface lustrous dark green, lower surface pale green to pallid, secondary veins spreading; petiole 0.5-1.5 cm long, glabrous. Flowers in clusters of 2 or 3 near end of branches; pedicel 2.5-3.5 cm long, glabrous; calyx glabrous, 5-toothed, teeth unequal and variable, 2-4 mm long; corolla pink, funnelform-campanulate, 5-6 cm long and broad, deeply 5-lobed, lobes spatulate to obovate, rounded; stamens 10, included, filaments flattened, villous; ovary cylindrical, glabrous, style stout, equaling stamens in length, glabrous, stigma capitate.
The Ryukyus to Fukien. Taiwan, common in broad-leaved forests from 300 to 2,400 m throughout the island.
TAIPEI: Chihsingshan, S. Sasaki s. n. in 1911 (Type of R. leiopodum Hayata). CHIAYI: Alishan, Hayata, Kanehira & Tanaka s. n. in 1914 (Tape of R. tanakai Hayata); Mienyueh, Lu 14639. ILAN: Tulishan, Lu 15606.
セイシカ Rhododendron latoucheae
アマミセイシカ Rhododendron latoucheae var. amamiense
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。、
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。
478. Rhododendron latoucheae Franchet 西施花
Shrubs or small trees, 2–7 m tall; shoots stout. Petioles to 15 mm, glabrous; leaf blade narrowly elliptic-lanceolate oblanceolate or ovate-elliptic, 5–11(–13) × 1.4–5.5 cm; base cuneate to broadly cuneate; margin slightly revolute; apex acuminate; both surfaces glabrous; midrib impressed adaxially, obsolete abaxially; lateral veins net-veined, slightly prominent on both surfaces. Inflorescence subapical, 1(–2)-flowered. Pedicel stout, 2–3 cm, glabrous; calyx lobes obscure or fine and triangular, rarely linear, then to 10 mm, margin and apex finely ciliate; corolla funnelform, pink to white, 3.5–4.8 cm, lobes long-ovate, glabrous, emarginate; stamens 10, included in tube or partly exserted, filaments flat, puberulent below middle; ovary cylindric, truncate below insertion of style, 3.5–8 × 0.2–0.4 mm, dark brown, glabrous; style 4–8 cm, exserted, glabrous. Capsules cylindric, ca. 40 × 4 mm; style deciduous. Fl. Mar–May, fr. Sep–Oct.
Mixed forests, rocky mountain slopes; 100–2700 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Sichuan, Taiwan, Zhejiang [Japan (including Ryukyu Islands)].
Gao Lianming (pers. comm.) notes that field observations indicate that the degree of calyx development and the size of the leaves are variable, even within a single population. There is therefore no justification for maintaining Rhododendron ellipticum Maximowicz as distinct from R. latoucheae (and anyway the former name cannot be used because it is an illegitimate later homonym).
