阔叶杜鹃Rhododendron platyphyllum Franch. ex Balf. F. et W. W. Smith
阔叶杜鹃Rhododendron platyphyllum Franch. ex Balf. F. et W. W. Smith
155. 阔叶杜鹃(中国高等植物图鉴)
Rhododendron platyphyllum Franch. ex Balf. f. et W. W. Smith in Not. Bot. Gard. Edinb. 9: 259. 1916; Hutch. in Stevenson, Spec. Rhodod. 214. 1930; Cowan et David-ian in R. H. S. Rhodod. Year Book, 2: 73. 1947; 中国高等植物图鉴3: 759. 1974; Diavidian, Rhodod. Spec. 1: 60. 1982;云南植物志4: 531. 图版150, 9-11. 1986. ——R. cephalanthum Franch. var. platyphyllum Franch. ex Diels in Not. Bot. Gard. Edinb. 7: 211. 1912, nom. nud. ——R. cephalanthum Franch. subsp. platy-phyllum (Franch. ex Balf. f. et W. W. Smith) Cullen in Not. Bot. Gard. Edinb. 37: 327. Fig. 4ba, p. 21. 1979.
常绿小灌木,直立或半匍匐状,高0.15-1.5米,分枝短。小枝密被鳞片,无毛。叶芽鳞宿存,较大,宽卵形、倒卵形或近圆形,具小突尖头。叶革质,宽椭圆形、长圆状卵形或卵形,长3-5厘米,宽2-2.8厘米,顶端圆或钝并凹陷,基部楔形或圆钝,上面暗绿色,有光泽,无鳞片,具深网纹,下面密被鳞片,鳞片褐色或暗棕褐色,有长短不一柄而成多层;叶柄长3-6毫米,被鳞片。花序顶生,6-10花密集成头状,花芽鳞宿存;花梗长3-5毫米,被鳞片,花萼大,5深裂;长(3-)5-7毫米,裂片长圆形或椭圆形,外面被鳞片,边缘被长睫毛;花冠狭管状漏斗形,长约1.8-2厘米,白色,乳白色、粉色,罕蔷薇色或带黄色,肉质,外面无鳞片和毛,花管长13-14毫米,长于裂片,内面喉部被髯毛;雄蕊5(-8)枚,内藏于花管,花丝基部被毛;子房长约1毫米,被鳞片,花柱短,约与子房等长,光滑。蒴果卵圆形,长约3毫米,密被鳞片,被包于宿萼内。花期5-6月。果期7-8月。
产云南西北部、中部及西部。生于开阔草坡、岩崖、高山灌丛或竹丛中,海拔3 000-4 500米。模式标本采自大理(苍山)。
形态特征:常绿小灌木,直立或半匍匐状,高0.15---1.5米,分枝短。小枝密被鳞片,无毛。叶芽鳞宿存,较大,宽卵形、倒卵形或近圆形,具小突尖头。叶革质,宽椭圆形、长圆状卵形或卵形,长3—5厘米,宽2—2.8厘米,顶端圆或钝并凹陷,基部楔形或圆钝,上面暗绿色,有光泽,无鳞片,具深网纹,下面密被鳞片,鳞片褐色或暗棕褐色,有长短不一柄而成多层;叶柄长3—6毫米,被鳞片。花序顶生,6—10花密集成头状,花芽鳞宿存;花梗长3—5毫米,被鳞片,花萼大,5深裂;长(3--)5—7毫米,裂片长圆形或椭圆形,外面被鳞片,边缘被长睫毛;花冠狭管状漏斗形,长约1.8--2厘米,白色,乳白色、粉色,罕蔷薇色或带黄色,肉质,外面无鳞片和毛,花管长13—14毫米,长于裂片,内面喉部被髯毛;雄蕊5(--8)枚,内藏于花管,花丝基部被毛;子房长约1毫米,被鳞片,花柱短,约与子房等长,光滑。蒴果卵圆形,长约3毫米,密被鳞片,被包于宿萼内。 花期5--6月。果期7—8月。
产地分布:产云南西北部、中部及西部。生于开阔草坡、岩崖、高山灌丛或竹丛中,海拔3000—4500米。模式标本采自大理(苍山)。
参考文献:Rhododendron platyphyllum Franch.Ex Ball.F.Et W.W.Smith in Not.Bot.Card.Edinb.9:259.1916;Hutch.In Stevenson,Spec.Rhodod.214.1930;Cowmle(David—ian in K.H.S.Rhodod.Year Book,2:73. 1947;中国高等植物图鉴3:759.1974;Diavidian,Rhodod.Spec. 1:60. 1982;云南植物志4:531. 图版150.9—11.1986.——R.cephalanthum Franch.Var.Platyphyllum Franch.Ex Diels in Not.Bot.Gard.Edinb.7:211.1912,Bom.Nud.---R.Cephalanthum Franch.Subsp.Platy—phyllum (Franch.Ex Balf.F.Et W.W.Smith)Cullen in Not.Bot.Gard.Edinb.37:327.Fig.4ba,p.21.1979.
亚组概述:Subsect.Baileya Sleurner in Bot.Jahrb.74:531. 1949.——Ser.Lepidotum sensu Hutch.In Stevenson,Spec.Rhodod.437.1930,pro parte---Ser.Lepidotum subser.Baileyi Davidian,Rhodod.Spec.1:218.1982.常绿小灌木。叶下面密被鳞片,鳞片一式大小,片状,相重叠,边缘有细钝齿。花 序顶生,短总状,有花5—10(--18)朵;花梗细长,长于花冠;花冠辐状;雄蕊10, 花丝被毛;子房5室,密被鳞片,花柱短而粗,强度弯弓。蒴果小,种子无翅、被不明 显的鳍纹。 亚组的模式种:辐花杜鹃Rhododendron baileyi Balf.F. 本亚组仅1种,产东喜马拉雅山区。
《Flora of China》 Vol. 14 (2005)
Rhododendron platyphyllum (Franchet ex Diels) I. B. Balfour & W. W. Smith
阔叶杜鹃 kuo ye du juan
Erect or semiprostrate shrubs, 0.15–1.5 m tall; branchlets short, scaly; bud scales persistent, large, broadly ovate or rounded. Petiole 3–6 mm, scaly; leaf blade aromatic, broadly elliptic, oblong-ovate or ovate, 0.3–0.5 × 0.2–0.3 cm; base rounded or cuneate; apex obtuse or rounded, rarely emarginate; abaxial surface scales overlapping, arranged in 2–3 tiers, unequal, brown, dark brown, or rust-colored; adaxial surface dark green, shiny, glabrous. Inflorescence 6–10-flowered. Pedicel 0.3–0.5 cm, scaly; calyx lobes (3–)5–7 mm, oblong or elliptic, persisting to enclose mature capsule, scaly, margin ciliate; corolla narrowly tubular-funnelform, white, creamy white or pink, rarely yellowish or rose, 1.8–2 cm, tube 13–14 mm, outer surface glabrous, inner surface densely pilose; stamens 5(–8), included in corolla tube, filaments slightly puberulous towards base; ovary ca. 1 mm, scaly; style as long as ovary, glabrous. Capsule ovoid, ca. 3 mm, densely scaly. Fl. May–Jun, fr. Jul–Aug.
Bamboo brakes, among rocks in open alpine pastures, cliffs, ledges; 3000–4500 m. C and NW Yunnan.
This taxon is treated as a subspecies of Rhododendron cephalanthum by some authors.
别名:阔枘杜鹃;
科名:杜鹃花科 Ericaceae
属名:杜鹃属 Rhododendron
《中国植物志》第57(1)卷177页
155. 阔叶杜鹃(中国高等植物图鉴)
Rhododendron platyphyllum Franch. ex Balf. f. et W. W. Smith in Not. Bot. Gard. Edinb. 9: 259. 1916; Hutch. in Stevenson, Spec. Rhodod. 214. 1930; Cowan et David-ian in R. H. S. Rhodod. Year Book, 2: 73. 1947; 中国高等植物图鉴3: 759. 1974; Diavidian, Rhodod. Spec. 1: 60. 1982;云南植物志4: 531. 图版150, 9-11. 1986. ——R. cephalanthum Franch. var. platyphyllum Franch. ex Diels in Not. Bot. Gard. Edinb. 7: 211. 1912, nom. nud. ——R. cephalanthum Franch. subsp. platy-phyllum (Franch. ex Balf. f. et W. W. Smith) Cullen in Not. Bot. Gard. Edinb. 37: 327. Fig. 4ba, p. 21. 1979.
常绿小灌木,直立或半匍匐状,高0.15-1.5米,分枝短。小枝密被鳞片,无毛。叶芽鳞宿存,较大,宽卵形、倒卵形或近圆形,具小突尖头。叶革质,宽椭圆形、长圆状卵形或卵形,长3-5厘米,宽2-2.8厘米,顶端圆或钝并凹陷,基部楔形或圆钝,上面暗绿色,有光泽,无鳞片,具深网纹,下面密被鳞片,鳞片褐色或暗棕褐色,有长短不一柄而成多层;叶柄长3-6毫米,被鳞片。花序顶生,6-10花密集成头状,花芽鳞宿存;花梗长3-5毫米,被鳞片,花萼大,5深裂;长(3-)5-7毫米,裂片长圆形或椭圆形,外面被鳞片,边缘被长睫毛;花冠狭管状漏斗形,长约1.8-2厘米,白色,乳白色、粉色,罕蔷薇色或带黄色,肉质,外面无鳞片和毛,花管长13-14毫米,长于裂片,内面喉部被髯毛;雄蕊5(-8)枚,内藏于花管,花丝基部被毛;子房长约1毫米,被鳞片,花柱短,约与子房等长,光滑。蒴果卵圆形,长约3毫米,密被鳞片,被包于宿萼内。花期5-6月。果期7-8月。
产云南西北部、中部及西部。生于开阔草坡、岩崖、高山灌丛或竹丛中,海拔3 000-4 500米。模式标本采自大理(苍山)。
形态特征:常绿小灌木,直立或半匍匐状,高0.15---1.5米,分枝短。小枝密被鳞片,无毛。叶芽鳞宿存,较大,宽卵形、倒卵形或近圆形,具小突尖头。叶革质,宽椭圆形、长圆状卵形或卵形,长3—5厘米,宽2—2.8厘米,顶端圆或钝并凹陷,基部楔形或圆钝,上面暗绿色,有光泽,无鳞片,具深网纹,下面密被鳞片,鳞片褐色或暗棕褐色,有长短不一柄而成多层;叶柄长3—6毫米,被鳞片。花序顶生,6—10花密集成头状,花芽鳞宿存;花梗长3—5毫米,被鳞片,花萼大,5深裂;长(3--)5—7毫米,裂片长圆形或椭圆形,外面被鳞片,边缘被长睫毛;花冠狭管状漏斗形,长约1.8--2厘米,白色,乳白色、粉色,罕蔷薇色或带黄色,肉质,外面无鳞片和毛,花管长13—14毫米,长于裂片,内面喉部被髯毛;雄蕊5(--8)枚,内藏于花管,花丝基部被毛;子房长约1毫米,被鳞片,花柱短,约与子房等长,光滑。蒴果卵圆形,长约3毫米,密被鳞片,被包于宿萼内。 花期5--6月。果期7—8月。
产地分布:产云南西北部、中部及西部。生于开阔草坡、岩崖、高山灌丛或竹丛中,海拔3000—4500米。模式标本采自大理(苍山)。
参考文献:Rhododendron platyphyllum Franch.Ex Ball.F.Et W.W.Smith in Not.Bot.Card.Edinb.9:259.1916;Hutch.In Stevenson,Spec.Rhodod.214.1930;Cowmle(David—ian in K.H.S.Rhodod.Year Book,2:73. 1947;中国高等植物图鉴3:759.1974;Diavidian,Rhodod.Spec. 1:60. 1982;云南植物志4:531. 图版150.9—11.1986.——R.cephalanthum Franch.Var.Platyphyllum Franch.Ex Diels in Not.Bot.Gard.Edinb.7:211.1912,Bom.Nud.---R.Cephalanthum Franch.Subsp.Platy—phyllum (Franch.Ex Balf.F.Et W.W.Smith)Cullen in Not.Bot.Gard.Edinb.37:327.Fig.4ba,p.21.1979.
亚组概述:Subsect.Baileya Sleurner in Bot.Jahrb.74:531. 1949.——Ser.Lepidotum sensu Hutch.In Stevenson,Spec.Rhodod.437.1930,pro parte---Ser.Lepidotum subser.Baileyi Davidian,Rhodod.Spec.1:218.1982.常绿小灌木。叶下面密被鳞片,鳞片一式大小,片状,相重叠,边缘有细钝齿。花 序顶生,短总状,有花5—10(--18)朵;花梗细长,长于花冠;花冠辐状;雄蕊10, 花丝被毛;子房5室,密被鳞片,花柱短而粗,强度弯弓。蒴果小,种子无翅、被不明 显的鳍纹。 亚组的模式种:辐花杜鹃Rhododendron baileyi Balf.F. 本亚组仅1种,产东喜马拉雅山区。
《Flora of China》 Vol. 14 (2005)
Rhododendron platyphyllum (Franchet ex Diels) I. B. Balfour & W. W. Smith
阔叶杜鹃 kuo ye du juan
Erect or semiprostrate shrubs, 0.15–1.5 m tall; branchlets short, scaly; bud scales persistent, large, broadly ovate or rounded. Petiole 3–6 mm, scaly; leaf blade aromatic, broadly elliptic, oblong-ovate or ovate, 0.3–0.5 × 0.2–0.3 cm; base rounded or cuneate; apex obtuse or rounded, rarely emarginate; abaxial surface scales overlapping, arranged in 2–3 tiers, unequal, brown, dark brown, or rust-colored; adaxial surface dark green, shiny, glabrous. Inflorescence 6–10-flowered. Pedicel 0.3–0.5 cm, scaly; calyx lobes (3–)5–7 mm, oblong or elliptic, persisting to enclose mature capsule, scaly, margin ciliate; corolla narrowly tubular-funnelform, white, creamy white or pink, rarely yellowish or rose, 1.8–2 cm, tube 13–14 mm, outer surface glabrous, inner surface densely pilose; stamens 5(–8), included in corolla tube, filaments slightly puberulous towards base; ovary ca. 1 mm, scaly; style as long as ovary, glabrous. Capsule ovoid, ca. 3 mm, densely scaly. Fl. May–Jun, fr. Jul–Aug.
Bamboo brakes, among rocks in open alpine pastures, cliffs, ledges; 3000–4500 m. C and NW Yunnan.
This taxon is treated as a subspecies of Rhododendron cephalanthum by some authors.