弯尖杜鹃Rhododendron adenopodum Franch
弯尖杜鹃Rhododendron adenopodum Franch
109. 弯尖杜鹃（中国高等植物图鉴）图版47：1-4
Rhododendron adenopodum Franch. in Journ. de Bot. 9: 391. 1895; Tagg in Stevenson, Spec. Rhodod. 569. 1930; Cullen et Chamb. in Not. Bot. Gard. Edinb. 37: 328. 1979; Chamb. in Not. Bot. Gard. Edinb. 39: 318. 1982.——R. youngae Fang in Contr. Biol. Lab. Sci. Soc. China Bot. 12:24. 1939;中国高等植物图鉴3: 122. 图4198. 1974.——R. simiarum Hance subsp. youngae (Fang) Chamb. ex Cullen et Chamb. in ibid. 37: 329. 1979; Chamb. in ibid. 39: 319. 1982.
常绿灌木，高约3米；树皮深灰色或灰白色，干后呈块状剥落；小枝有灰白色绒毛及少许腺体。叶多密生于枝顶，革质，倒卵状椭圆形或长倒卵形，长6-13厘米，宽2-4厘米，先端急尖，常有歪曲的短尖尾，基部楔形或近于圆形，边缘向下反卷，上面无毛，中脉微下陷，侧脉微现，约10-12对，下面有灰白色的薄毛被，中脉显著隆起，侧脉为毛被所覆盖；叶柄圆柱形，长1-1.5厘米，幼时被灰白色绒毛，后变无毛。总状伞形花序，有花4-8朵；总轴长1-1.5厘米，密被淡黄色柔毛，后变无毛；每花下有一膜质的苞片，倒卵形，长约2厘米，宽约1厘米，外面有密长柔毛，内面仅顶部有毛，其余无毛，开花后即脱落；花梗长1-2.5厘米，密被淡棕色长柄腺体及疏柔毛；花萼小，5裂，裂片三角状卵形，长3-5毫米，膜质，外面有少许硬毛，内面无毛；花冠漏斗状钟形，长4-4.5厘米，粉红色，有深红色斑点，5裂，裂片圆形，长1.5厘米，宽2厘米；雄蕊10，长1.5-3厘米，不等长，花丝线形，基部有开展的柔毛，花药长卵圆形，长3毫米，直径2毫米；子房卵圆形，长5毫米，有棕色的长柄腺体；花柱长4.5厘米，无毛，柱头膨大，3-5浅裂。蒴果圆柱状或长圆状椭圆形，长1.5-2厘米，直径6-10毫米，密被开展的腺头刚毛，成熟后5裂。花期4-5月，果期7-8月。
产四川东部、湖北西部。生于海拔1000-2200米的山坡灌木林中。模式标本采自四川城口。
本种叶片下面有灰白色毛被，先端急尖，有歪曲的短尖尾，花序总轴较长并有柔毛，花梗有长柄腺体等特征，在银叶杜鹃亚组中是十分特殊的，区别较易。
《Flora of China》 Vol. 14 (2005)
Rhododendron adenopodum Franchet
弯尖杜鹃 wan jian du juan
Shrubs, evergreen, 2–3 m tall; bark gray; young shoots with a dense grayish tomentum and a few glandular hairs. Petiole 10–15 mm; leaf blade leathery, obovate-elliptic or long-obovate, 6–13 × 2–4 cm; base cuneate; apex acuminate, shortly curved-cuspidate; abaxial surface indumentum grayish to pale fawn; adaxial surface glabrous when mature; midrib prominent abaxially, grooved adaxially; lateral veins 10–12-paired, inconspicuous. Inflorescence a lax racemose corymb, 4–8-flowered; rachis 10–15 mm, with a fawn-tomentum. Pedicel 1–2.5 cm, with glandular hairs; calyx lobes 5, 3–5 mm, membranous glandular on the back, triangular-ovate, margin glandular-ciliate; corolla funnel-campanulate, pale rose, usually crimson-spotted, 4–4.5 cm, puberulent within at the base, outside glabrous, lobes 5, orbicular, ca. 1.5 × 2 cm; stamens 10, unequal, 1.5–3 cm, filaments densely hairy in lower 1/4; ovary ovoid, ca. 5 mm, ca. 5–6-locular, densely clad with long-glandular hairs; style slender, glabrous. Capsule oblong-cylindric, ca. 15 × 7 mm, glandular. Fl. Apr–May, fr. Jul–Aug.
Thickets, mountain slopes, roadsides; 1000–2200 m. Chongqing, W Hubei.
别名：腺柄杜鹃;腺枝杜鹃;
科名：杜鹃花科 Ericaceae
属名：杜鹃属 Rhododendron
109. 弯尖杜鹃（中国高等植物图鉴）图版47：1-4
Rhododendron adenopodum Franch. in Journ. de Bot. 9: 391. 1895; Tagg in Stevenson, Spec. Rhodod. 569. 1930; Cullen et Chamb. in Not. Bot. Gard. Edinb. 37: 328. 1979; Chamb. in Not. Bot. Gard. Edinb. 39: 318. 1982.——R. youngae Fang in Contr. Biol. Lab. Sci. Soc. China Bot. 12:24. 1939;中国高等植物图鉴3: 122. 图4198. 1974.——R. simiarum Hance subsp. youngae (Fang) Chamb. ex Cullen et Chamb. in ibid. 37: 329. 1979; Chamb. in ibid. 39: 319. 1982.
常绿灌木，高约3米；树皮深灰色或灰白色，干后呈块状剥落；小枝有灰白色绒毛及少许腺体。叶多密生于枝顶，革质，倒卵状椭圆形或长倒卵形，长6-13厘米，宽2-4厘米，先端急尖，常有歪曲的短尖尾，基部楔形或近于圆形，边缘向下反卷，上面无毛，中脉微下陷，侧脉微现，约10-12对，下面有灰白色的薄毛被，中脉显著隆起，侧脉为毛被所覆盖；叶柄圆柱形，长1-1.5厘米，幼时被灰白色绒毛，后变无毛。总状伞形花序，有花4-8朵；总轴长1-1.5厘米，密被淡黄色柔毛，后变无毛；每花下有一膜质的苞片，倒卵形，长约2厘米，宽约1厘米，外面有密长柔毛，内面仅顶部有毛，其余无毛，开花后即脱落；花梗长1-2.5厘米，密被淡棕色长柄腺体及疏柔毛；花萼小，5裂，裂片三角状卵形，长3-5毫米，膜质，外面有少许硬毛，内面无毛；花冠漏斗状钟形，长4-4.5厘米，粉红色，有深红色斑点，5裂，裂片圆形，长1.5厘米，宽2厘米；雄蕊10，长1.5-3厘米，不等长，花丝线形，基部有开展的柔毛，花药长卵圆形，长3毫米，直径2毫米；子房卵圆形，长5毫米，有棕色的长柄腺体；花柱长4.5厘米，无毛，柱头膨大，3-5浅裂。蒴果圆柱状或长圆状椭圆形，长1.5-2厘米，直径6-10毫米，密被开展的腺头刚毛，成熟后5裂。花期4-5月，果期7-8月。
产四川东部、湖北西部。生于海拔1000-2200米的山坡灌木林中。模式标本采自四川城口。
本种叶片下面有灰白色毛被，先端急尖，有歪曲的短尖尾，花序总轴较长并有柔毛，花梗有长柄腺体等特征，在银叶杜鹃亚组中是十分特殊的，区别较易。
《Flora of China》 Vol. 14 (2005)
Rhododendron adenopodum Franchet
弯尖杜鹃 wan jian du juan
Shrubs, evergreen, 2–3 m tall; bark gray; young shoots with a dense grayish tomentum and a few glandular hairs. Petiole 10–15 mm; leaf blade leathery, obovate-elliptic or long-obovate, 6–13 × 2–4 cm; base cuneate; apex acuminate, shortly curved-cuspidate; abaxial surface indumentum grayish to pale fawn; adaxial surface glabrous when mature; midrib prominent abaxially, grooved adaxially; lateral veins 10–12-paired, inconspicuous. Inflorescence a lax racemose corymb, 4–8-flowered; rachis 10–15 mm, with a fawn-tomentum. Pedicel 1–2.5 cm, with glandular hairs; calyx lobes 5, 3–5 mm, membranous glandular on the back, triangular-ovate, margin glandular-ciliate; corolla funnel-campanulate, pale rose, usually crimson-spotted, 4–4.5 cm, puberulent within at the base, outside glabrous, lobes 5, orbicular, ca. 1.5 × 2 cm; stamens 10, unequal, 1.5–3 cm, filaments densely hairy in lower 1/4; ovary ovoid, ca. 5 mm, ca. 5–6-locular, densely clad with long-glandular hairs; style slender, glabrous. Capsule oblong-cylindric, ca. 15 × 7 mm, glandular. Fl. Apr–May, fr. Jul–Aug.
Thickets, mountain slopes, roadsides; 1000–2200 m. Chongqing, W Hubei.