| Rhododendron spinuliferum | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Ericales |
| Family: | Ericaceae |
| Genus: | Rhododendron |
| Species: | R. spinuliferum |
| Binomial name | |
| Rhododendron spinuliferum | |
Rhododendron spinuliferum is a species of flowering plant in the family Ericaceae, native to Yunnan and Sichuan, China.
Rhododendron spinuliferum grows as an evergreen shub 0.5 to 3.5 m (1.6 to 11.5 ft) high. It has delicate oval or lanceolate (spear-shaped) leaves 3 to 10.5 cm (1.2 to 4.1 in) long by 1.8 to 3.8 cm (0.71 to 1.50 in) wide, with cuneate (wedge-shaped) bases and pointed tips. [1] The red tube-shaped flowers appear from February to June. [1] [2] These tubular corollas and tapered ends are unusual for the genus. [3]
French botanist Adrien René Franchet described Rhododendron spinuliferum in 1895. Two subspecies are recognised. [1] Within the genus Rhododendron , it lies in the subgenus Rhododendron and section Rhododendron. Analysis of its DNA shows it is most closely related to R. triflorum , the two sister species having R. keiskei as the next closest relative. However, the section appears to be polyphyletic, with these species early offshoots of the section Vireya. [4]
The range is southwestern Sichuan and northeastern to western Yunnan at altitudes ranging from 1,900 to 2,500 m (6,200 to 8,200 ft), in coniferous forests with Keteleeria , or mixed conifer and deciduous forest with oak ( Quercus ), [1] in shaded areas and thickets. [2]
In cultivation, Rhododendron spinuliferum grows best in acidic soils of pH 4–6 with a shady aspect and significant organic material in the soil, [2] although excess shade will result in few flowers and leggy habit. Readily propagated by seed or cuttings, it flowers in four to five years from seed. [3]
Hybrid cultivars derived from this species include:
Rhododendron spinuliferum has been used in Chinese traditional medicine to remove phlegm and treat asthma. [5]
Rhododendron is a very large genus of about 1,024 species of woody plants 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 lochiae is a species of plant in the family Ericaceae, and is one of only two species of the genus Rhododendron that are native to Australia. It is found only in restricted areas of mountain–top cloud forest habitats within the Wet Tropics of Queensland World Heritage Site. The other species, Rhododendron viriosum, was only formally classified as a separate species in 2002.
Ypsilandra is a genus of at least six herbaceous plant species, first described as a genus in 1888. This genus is a member of the Melanthiaceae and is native to East Asia.
Rhododendron section Vireya (vireyas) is a tropical group of Rhododendron species, numbering about 300 in all. Vireyas are native to southeastern Asia and range from Thailand to Australia.
Rhododendron aganniphum is a species of flowering plant in the heath family Ericaceae, native to Tibet and southwestern China, where it grows at altitudes of 2,700–4,700 m (8,900–15,400 ft). It is a compact evergreen shrub that grows to 1–4 m (3.3–13.1 ft) in height, with thick, leathery leaves that are oblong to elliptic-oblong and 4.5–12 by 2–6 cm in size. The flowers are rose-flushed white with maroon flecks, and often pink streaks.
Rhododendron bureavii, the Bureau rhododendron, is a species of flowering plant in the heath family Ericaceae. It is native to western Sichuan and northern Yunnan, China, where it lives at altitudes of 2,800–4,500 m (9,200–14,800 ft).
Rhododendron argyrophyllum (银叶杜鹃) is a species of flowering plant in the heath family Ericaceae. It is native to forested slopes at 1,600–2,300 m (5,200–7,500 ft) in E and NW Guizhou, S and W Sichuan, and NE Yunnan in China.
Rhododendron decorum, the great white rhododendron is a species of flowering plant in the heath family Ericaceae. It is an evergreen shrub native to high forested regions of northern Myanmar and Guizhou, Sichuan, Xizang, and Yunnan, China growing at altitudes of 1,800–4,000 m (5,900–13,100 ft). Depending on the growing environment it can be found as a shrub or small tree of 1–6 m (3.3–19.7 ft), with leathery leaves that are oblong, oblong-ovate or oblong-elliptic in shape and between 5–19 cm in length and 3–11 cm in width. Flowers are borne in trusses, white to pale pink, with a yellow throat, large and very fragrant.
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 phaeochrysum (栎叶杜鹃) is a species of flowering plant in the family Ericaceae. It is native to western Sichuan, southeastern Xizang, and northwestern Yunnan in China, where it grows at altitudes of 3,000–4,800 m (9,800–15,700 ft). It is an evergreen shrub that grows to 1–4.5 m (3.3–14.8 ft) in height, with leathery leaves that are oblong-elliptic to ovate-oblong, 5–14 by 2–5.5 cm in size. The flowers are white to pale pink, with purplish spots.
Rhododendron selense (多变杜鹃) is a rhododendron species native to southwestern Sichuan, eastern Xizang, and western Yunnan in China, where it grows at altitudes of 2,700–4,000 m (8,900–13,100 ft). It is an evergreen shrub that grows to 1–2 m (3.3–6.6 ft) in height, with leaves that are oblong-elliptic or obovate to elliptic, 4–8 by 2–4 cm in size. The flowers are pink.
Rhododendron subsection Brachycalyx is a subsection of the genus Rhododendron, in section Tsutsusi, subgenus Azaleastrum, consisting of fifteen species of Azaleas from Asia.
Rhododendron subsection Tsutsusi is a subsection of the genus Rhododendron, in section Tsutsusi, subgenus Azaleastrum, consisting of 66 species of Azaleas.
Iris goniocarpa is a plant species in the genus Iris, it is also in the subgenus of Iris and in the section Pseudoregelia. It is a rhizomatous perennial, from China, India, Burma and Bhutan. It has yellow green to dark green, long leaves, slender stem and, one flower between blue, lavender-blue, lilac, blue-violet or blue-purple. It is cultivated as an ornamental plant in temperate regions.
Rhododendron griersonianum is a species of flowering plant in the family Ericaceae. It is native to western Yunnan (China) and Myanmar, where it grows in mixed forests and thickets at altitudes of 1,600–2,700 m (5,200–8,900 ft). This evergreen shrub reaches an average height of 1.3 m (4.3 ft). The 5–12-flowered inflorescences appear from May to June, with the seeds ripening in March of the following year.
Rhododendron davidsonianum, the concave-leaf rhododendron, is a species of flowering plant in the heath family Ericaceae that is native to the forests of Sichuan, China, where it lives at altitudes of 1,500–2,800 m (4,900–9,200 ft). Growing to 4 m (13 ft) tall and 2.5 m (8.2 ft) broad, it is an upright evergreen shrub. The glossy leaves are lanceolate and up to 6 cm (2.4 in) long. In Spring trusses of bell-shaped, pale pink or purple flowers are produced.
Rhododendron orbiculare, the round-leaved rhododendron, is a species of flowering plant in the heath family Ericaceae that is native to forests and slopes at an elevation of 1,400–3,500 m (4,600–11,500 ft) in northeastern Guangxi and southwestern Sichuan, China. It is a compact evergreen shrub growing to 3 m (9.8 ft) tall and broad, with matt-textured round leaves and trusses of deep pink flowers in spring.
Rhododendron racemosum, the racemose rhododendron, is a species of flowering plant in the heath family Ericaceae, native to forest and grassland at 1,500–3,500 m (4,900–11,500 ft) in northwestern Guizhou, southwestern Sichuan, and Yunnan, China.
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 williamsianum, the Williams rhododendron, is a species of flowering plant in the heath family Ericaceae. It is native to forested slopes at 1,800–2,800 m (5,900–9,200 ft) in western Guizhou, southwestern Sichuan, southeastern Xizang and northeastern Yunnan in southern and western China.