Rhododendron is a very large genus of about 1,024 species of woody plants and in the heath family (Ericaceae). They can be either evergreen or deciduous. Most species are native to eastern Asia and the Himalayan region, but smaller numbers occur elsewhere in Asia, and in North America, Europe and Australia.
Rhododendron luteum, the yellow azalea or honeysuckle azalea, is a species of flowering plant in the heath family Ericaceae, native to southeastern Europe and southwest Asia. In Europe, it occurs from southern Poland and Austria, south through the Balkans, and east to southern Russia; and in Asia, east to the Caucasus.
Cornus controversa, syn. Swida controversa, is a species of flowering plant in the dogwood family Cornaceae. It is native to China, Korea, the Himalayas and Japan. It is a deciduous tree growing to 50 ft (15 m), with multiple tiered branches. Flat panicles of white flowers appear in summer, followed by globose black fruit. Ovate dark green leaves are glaucous underneath and turn red-purple in autumn. It is cultivated in gardens and parks in temperate regions.
Rhododendron concinnum (秀雅杜鹃) is a species of flowering plant in the family Ericaceae. It is native to Guizhou, Henan, Hubei, Shaanxi, Sichuan, and Yunnan in China, where it grows at altitudes of 2300–3000 meters. It is a shrub that grows to 1.5–3 m in height, with leaves that are oblong, elliptic, ovate, oblong-lanceolate or ovate-lanceolate, 2.5–7.5 by 1.5–3.5 cm in size. Flowers are pale pink to deep purplish red.
Rhododendron fulvum is a species of flowering plant in the heath family Ericaceae, native to northern Myanmar and China. In China, it is found in southwest Sichuan, southeast Xizang, and western Yunnan. It grows at altitudes of 2,700–4,400 m (8,900–14,400 ft). It is an evergreen shrub or small tree growing to 2–8 m (6.6–26.2 ft) in height, with leathery leaves that are oblanceolate to oblong-lanceolate or obovate, 8–20 by 3–7.5 cm in size. The undersides are felted with a striking cinnamon colour. The flowers, borne in trusses in spring, are loosely bell-shaped, pale rose pink, with a crimson basal blotch and sometimes red spots.
Rhododendron insigne (不凡杜鹃) is a species of flowering plant in the family Ericaceae. It is native to southern Sichuan in China, where it grows at altitudes of 700–2,000 m (2,300–6,600 ft). This evergreen shrub grows to 1.5–6 m (4.9–19.7 ft) in height, with leathery leaves that are obovate-elliptic, obovate-lanceolate, oblong, or oblong-lanceolate, 8–13 by 2.5–4.5 cm in size. The flowers are pale to dark pink.
Rhododendron watsonii (无柄杜鹃) is a species of flowering plant in the family Ericaceae. It is native to southern Gansu and western Sichuan in China, where it grows at altitudes of 2,500–3,000 m (8,200–9,800 ft). It is an evergreen shrub or small tree growing to 1.5–6 m (4.9–19.7 ft) in height, with leathery leaves that are oblong-elliptic to broadly oblanceolate or obovate, 10–33 by 4–10 cm in size. The flowers are white.
Rhododendron dauricum is a species of flowering plant in the heath family Ericaceae native to forests and forest margins in Eastern Siberia, Mongolia, North China and Hokkaido, Japan. The Latin specific epithet dauricum means "from Siberia" – Transbaikal is also known as Dauria.
Rhododendron sinogrande (凸尖杜鹃) is a species of flowering plant in the family Ericaceae. It is commonly called the great Chinese rhododendron, and is native to alpine regions at 2,100–3,600 m (6,900–11,800 ft) in southeastern Xizang and western Yunnan in China and in northeastern Myanmar.
Rhododendron augustinii, called the blue rhododendron or Augustine's rhododendron, is a species of flowering plant in the genus Rhododendron native to central China and Tibet. Its Electra Group has gained the Royal Horticultural Society's Award of Garden Merit.
Rhododendron calostrotum is a species of flowering plant in the genus Rhododendron native to Tibet, south-central China, and Myanmar. Its putative subspecies Rhododendron calostrotum subsp. keleticum, called the beautiful-covering rhododendron, and its cultivar 'Gigha' have both gained the Royal Horticultural Society's Award of Garden Merit.
Rhododendron caucasicum, the Caucasian rhododendron or the Georgian snow rose, is a species of flowering plant in the genus Rhododendron native to the Transcaucasus and Anatolia. Its hybrid cultivar 'Christmas Cheer' has gained the Royal Horticultural Society's Award of Garden Merit.
Rhododendron edgeworthii, the Edgeworth rhododendron, is a species of flowering plant in the genus Rhododendron native to the eastern Himalaya, south-central China, Tibet, and Myanmar. It has gained the Royal Horticultural Society's Award of Garden Merit.
Rhododendron oreodoxa is a species of flowering plant in the genus Rhododendron native to central China. Its variety Rhododendron oreodoxa var. fargesii, called the Père Farges rhododendron, has gained the Royal Horticultural Society's Award of Garden Merit.
Rhododendron primuliflorum is a species of flowering plant in the genus Rhododendron native to central China. It has gained the Royal Horticultural Society's Award of Garden Merit.
Rhododendron roxieanum is a species of flowering plant in the family Ericaceae, native to central China and Tibet. Its variety Rhododendron roxieanum var. oreonastes, called the mountain rolled-leaf rhododendron, has gained the Royal Horticultural Society's Award of Garden Merit.
Rhododendron russatum, the purplish-blue rhododendron, is a species of flowering plant in the genus Rhododendron native to south-central China and Myanmar. It has gained the Royal Horticultural Society's Award of Garden Merit.
Rhododendron wiltonii, called the Wilton rhododendron and the wrinkled-skin rhododendron, is a species of flowering plant in the genus Rhododendron native to south‑central China. It has gained the Royal Horticultural Society's Award of Garden Merit.
Euonymus cornutus is a species of flowering plant in the genus Euonymus, native to Tibet, central China and Myanmar. Its putative variety Euonymus cornutus var. quinquecornutus, called the five‑horned spindle, has gained the Royal Horticultural Society's Award of Garden Merit.
Euonymus carnosus, called the fleshy‑flowered spindletree, is a species of flowering plant in the genus Euonymus, native to southeast and south‑central China, Taiwan, the Bonin Islands, the Ryukyu Islands, and Japan. It has gained the Royal Horticultural Society's Award of Garden Merit.
