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Species of plant From Wikipedia, the free encyclopedia
Adenium obesum, more commonly known as a desert rose, is a poisonous species of flowering plant belonging to the tribe Nerieae of the subfamily Apocynoideae of the dogbane family, Apocynaceae.[3] It is native to the Sahel regions south of the Sahara (from Mauritania and Senegal to Sudan), tropical and subtropical eastern and southern Africa, as well as the Arabian Peninsula. Other names for the flower include Sabi star, kudu, mock azalea, and impala lily. Adenium obesum is a popular houseplant and bonsai in temperate regions.
| Adenium obesum (Desert rose) | |
|---|---|
| |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Gentianales |
| Family: | Apocynaceae |
| Genus: | Adenium |
| Species: | A. obesum |
| Binomial name | |
| Adenium obesum | |
| Subspecies | |
|
See text | |
| Synonyms[2] | |
|
Adenium coetaneum Stapf | |
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It is an evergreen or drought-deciduous succulent shrub (which can also lose its leaves during cold spells, or according to the subspecies or cultivar). It can grow to 0.12–5 m (0.39–16.40 ft) in height, with pachycaul (disproportionately large) stems and a stout, swollen basal caudex (a rootstock that protrudes from the soil). The leaves are spirally arranged, clustered toward the tips of the shoots, simple entire, leathery in texture, 5–15 cm (2.0–5.9 in) long and 1–8 cm (0.39–3.15 in) broad. The flowers are tubular, 2–5 cm (0.79–1.97 in) long, with the outer portion 4–6 cm (1.6–2.4 in) diameter with five petals, resembling those of other related genera such as Plumeria and Nerium. The flowers tend to be red and pink, often with a whitish blush outward of the throat.
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Some taxonomies consider some other species in the genus to be subspecies of Adenium obesum.
Adenium swazicum is a critically endangered African species native to Eswatini and Mozambique, growing up to 0.7 m (2.29 ft) tall.
Adenium somalense is also native to Africa, inhabiting Tanzania, Kenya, and Somalia, and reaching heights of 5 m (16.40 ft), which makes it the largest of these four subspecies.
Adenium socotranum is native exclusively to the island of Socotra, and can grow to be 4.6 m (15 ft), but despite its small range, it is of least concern regarding endangerment. It can swell up to 8 feet (2.5 meters) in diameter at the base.[4]
Adenium oleifolium is near threatened in the wild and is the smallest of these subspecies, growing at the tallest to 0.4 m (1.31 ft).
Adenium Arabicum a species is a monoecious and self-sterile, common names include desert rose, elephant's foot, and Adan bush, arabicum is native to Saudi Arabia and Yemen.
Caterpillars of the polka-dot wasp moth (Syntomeida epilais) are known to feed on the desert rose, along with feeding on oleanders.[5]
In areas with year-round warm weather, they can bloom throughout the year.[6]
Adenium obesum produces a sap in its roots and stems that contains cardiac glycosides. This sap is used as arrow poison for hunting large game throughout much of Africa[7] and as a fish toxin.[8]
Adenium obesum is a popular houseplant and bonsai[9] in temperate regions. It requires a sunny location and a minimum indoor temperature in winter of 10 °C (50 °F). It thrives on a xeric watering regime as required by cacti. A. obesum is typically propagated by seed or stem cuttings. The numerous hybrids are propagated mainly by grafting on to seedling rootstock. While plants grown from seed are more likely to have the swollen caudex at a young age, with time many cutting-grown plants cannot be distinguished from seed-grown plants. Like many plants, Adenium obesum can also be propagated in vitro using plant tissue culture.[10]
This plant has gained the Royal Horticultural Society's Award of Garden Merit.[11]
The species has been depicted on postage stamps issued by various countries.[12]
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