大钟杜鹃Rhododendron ririei Wils.
大钟杜鹃Rhododendron ririei Wils.
116.大钟杜鹃（中国高等植物图鉴）来丽杜鹃（峨眉植物图志）图版51：1-3
Rhododendron ririei Hemsl. et Wils. in Kew Bull. Misc. Inform. 1910: 111. 1910; Tagg in Stevenson, Spec. Rhodod. 34. 1930; Fang in Contr. Biol. Lab. Sci. Soc. China Bot. 12: 26. 1939; et Icon. Pl. Omei. 1(1): pl. 21. 1942;中国高等植物图鉴3: 119. 图4192. 1974; Cullen et Chamb. in Not. Bot. Gard. Edinb. 37: 329. 1979; Chamb. in Not. Bot. Card. Edinb. 39: 328. 1982.
常绿灌木或小乔木，高约2-5米；树皮淡灰色或灰棕色，有裂纹及层状剥落；幼枝粗壮，嫩绿色，无毛。叶革质，常3-5枚密生于枝顶，叶片长圆状椭圆形或倒卵状椭圆形，长7.5-13厘米，宽2.5-4厘米，先端急尖，基部宽楔形或近于圆形，边缘质薄向下反卷，上面深绿色，无毛，下面有银白色紧贴的薄层毛被，中脉在上面下陷呈细沟纹，在下面显著隆起，侧脉13-14对，在两面仅微现，细脉在两面均微凸起，尤以在下面更明显；叶柄粗壮，长1-2厘米，无毛。顶生总状伞形花序，有花5-10朵；总轴长5-8毫米，有乳白色或淡黄色柔毛；花梗粗壮，长1-1.5厘米，有淡黄色短绒毛；花萼小，5裂，裂片三角状卵形，长2-3毫米，不等大；花冠钟状，基部宽阔，紫红色，长4-6厘米，口部直径5-6厘米，基部直径1.2-1.5厘米，有5个紫红色蜜腺囊，5裂，裂片近于圆形，长2厘米，宽2-3厘米，顶端有缺刻；雄蕊10，长2.5-5.5厘米，花丝紫色，无毛，花药椭圆形，长达5毫米；雌蕊长4-5.5厘米，子房圆柱状锥形，长5-8毫米，被灰白色短绒毛，花柱粗壮，长3.5-4.5厘米，无毛，柱头膨大成头状。蒴果圆柱形，长2-3厘米，直径9-12毫米，初被白毛，以后无毛，10室。花期3-5月，果期6-10月。
产四川西南部、峨眉山一带。生于海拔1 700-1 800的山坡林缘。模式标本采自四川峨眉山。
本种叶片长圆状椭圆形，细脉在上下两面均显著凸起；花梗粗壮而短，长仅1-1.5厘米，花冠淡紫色，长5-6厘米，钟状，基部宽阔，而与相近种银叶杜鹃 R． argyrophyllum Franch. 粉白杜鹃 R. hypoglaucum Hemsl. 显著不同，它们的花冠短，长仅2-3厘米，基部狭窄，区别甚易。
《Flora of China》 Vol. 14 (2005)
Rhododendron ririei Hemsley & E. H. Wilson
大钟杜鹃 da zhong du juan
Shrubs or small trees, 3–8 m tall; bark pale gray, exfoliating into thin and small irregular flakes; young shoots stout, pale green, glabrous. Petiole stout, 10–20 mm, glabrous; leaf blade oblong-elliptic to obovate-elliptic, 7.5–13 × 2.5–4 cm; base broadly cuneate or rounded; apex cuspidate and mucronate; abaxial surface indumentum silvery white, thin; adaxial surface dark green, glabrous, midrib prominent abaxially, impressed adaxially; lateral veins 13–14-paired, prominent abaxially. Inflorescence racemose-umbellate, 5–10-flowered; rachis 5–8 mm, whitish pilose. Pedicel 1–1.5 cm, with a white tomentum; calyx lobes 5, small, unequally triangular, sparsely pubescent; corolla campanulate, broad at base, purple-red, 4–6 cm, with 5 black-purple nectar pouches at the base of tube, lobes 5, orbicular, emarginate; stamens 10, subincluded in the corolla, 2.5–5.5 cm, filaments glabrous; ovary cylindric or conoid, 5–8 mm, 10-locular, densely gray felted-tomentose; style 3–3.5 cm, glabrous. Capsule oblong-cylindric, 2–3 × 9–12 mm, grayish tomentose when young, glabrescent. Fl. Mar–May, fr. Jul–Aug.
Forests; 1700–1800 m. SW Sichuan.
Rhododendron ririei subsp. leiboense M. Y. Fang (Acta Phytotax. Sin. 30: 556. 1992), described from Sichuan (Leibo), is said to differ in having the leaf blade more narrowly oblanceolate to elliptic-lanceolate, less leathery, with a silvery indumentum abaxially and a cuneate base, pedicels more slender, and corolla with a narrower base. This taxon was not included in FRPS.
别名：里腊氏杜鹃花;来丽杜鹃;
科名：杜鹃花科 Ericaceae
属名：杜鹃属 Rhododendron
116.大钟杜鹃（中国高等植物图鉴）来丽杜鹃（峨眉植物图志）图版51：1-3
Rhododendron ririei Hemsl. et Wils. in Kew Bull. Misc. Inform. 1910: 111. 1910; Tagg in Stevenson, Spec. Rhodod. 34. 1930; Fang in Contr. Biol. Lab. Sci. Soc. China Bot. 12: 26. 1939; et Icon. Pl. Omei. 1(1): pl. 21. 1942;中国高等植物图鉴3: 119. 图4192. 1974; Cullen et Chamb. in Not. Bot. Gard. Edinb. 37: 329. 1979; Chamb. in Not. Bot. Card. Edinb. 39: 328. 1982.
常绿灌木或小乔木，高约2-5米；树皮淡灰色或灰棕色，有裂纹及层状剥落；幼枝粗壮，嫩绿色，无毛。叶革质，常3-5枚密生于枝顶，叶片长圆状椭圆形或倒卵状椭圆形，长7.5-13厘米，宽2.5-4厘米，先端急尖，基部宽楔形或近于圆形，边缘质薄向下反卷，上面深绿色，无毛，下面有银白色紧贴的薄层毛被，中脉在上面下陷呈细沟纹，在下面显著隆起，侧脉13-14对，在两面仅微现，细脉在两面均微凸起，尤以在下面更明显；叶柄粗壮，长1-2厘米，无毛。顶生总状伞形花序，有花5-10朵；总轴长5-8毫米，有乳白色或淡黄色柔毛；花梗粗壮，长1-1.5厘米，有淡黄色短绒毛；花萼小，5裂，裂片三角状卵形，长2-3毫米，不等大；花冠钟状，基部宽阔，紫红色，长4-6厘米，口部直径5-6厘米，基部直径1.2-1.5厘米，有5个紫红色蜜腺囊，5裂，裂片近于圆形，长2厘米，宽2-3厘米，顶端有缺刻；雄蕊10，长2.5-5.5厘米，花丝紫色，无毛，花药椭圆形，长达5毫米；雌蕊长4-5.5厘米，子房圆柱状锥形，长5-8毫米，被灰白色短绒毛，花柱粗壮，长3.5-4.5厘米，无毛，柱头膨大成头状。蒴果圆柱形，长2-3厘米，直径9-12毫米，初被白毛，以后无毛，10室。花期3-5月，果期6-10月。
产四川西南部、峨眉山一带。生于海拔1 700-1 800的山坡林缘。模式标本采自四川峨眉山。
本种叶片长圆状椭圆形，细脉在上下两面均显著凸起；花梗粗壮而短，长仅1-1.5厘米，花冠淡紫色，长5-6厘米，钟状，基部宽阔，而与相近种银叶杜鹃 R． argyrophyllum Franch. 粉白杜鹃 R. hypoglaucum Hemsl. 显著不同，它们的花冠短，长仅2-3厘米，基部狭窄，区别甚易。
《Flora of China》 Vol. 14 (2005)
Rhododendron ririei Hemsley & E. H. Wilson
大钟杜鹃 da zhong du juan
Shrubs or small trees, 3–8 m tall; bark pale gray, exfoliating into thin and small irregular flakes; young shoots stout, pale green, glabrous. Petiole stout, 10–20 mm, glabrous; leaf blade oblong-elliptic to obovate-elliptic, 7.5–13 × 2.5–4 cm; base broadly cuneate or rounded; apex cuspidate and mucronate; abaxial surface indumentum silvery white, thin; adaxial surface dark green, glabrous, midrib prominent abaxially, impressed adaxially; lateral veins 13–14-paired, prominent abaxially. Inflorescence racemose-umbellate, 5–10-flowered; rachis 5–8 mm, whitish pilose. Pedicel 1–1.5 cm, with a white tomentum; calyx lobes 5, small, unequally triangular, sparsely pubescent; corolla campanulate, broad at base, purple-red, 4–6 cm, with 5 black-purple nectar pouches at the base of tube, lobes 5, orbicular, emarginate; stamens 10, subincluded in the corolla, 2.5–5.5 cm, filaments glabrous; ovary cylindric or conoid, 5–8 mm, 10-locular, densely gray felted-tomentose; style 3–3.5 cm, glabrous. Capsule oblong-cylindric, 2–3 × 9–12 mm, grayish tomentose when young, glabrescent. Fl. Mar–May, fr. Jul–Aug.
Forests; 1700–1800 m. SW Sichuan.
Rhododendron ririei subsp. leiboense M. Y. Fang (Acta Phytotax. Sin. 30: 556. 1992), described from Sichuan (Leibo), is said to differ in having the leaf blade more narrowly oblanceolate to elliptic-lanceolate, less leathery, with a silvery indumentum abaxially and a cuneate base, pedicels more slender, and corolla with a narrower base. This taxon was not included in FRPS.