วันเสาร์ที่ 21 พฤษภาคม พ.ศ. 2554

Plumeria

Plumeria rubra
Plumeria (common name Frangipani) is a genus of flowering plants of the family which includes Dogbane: the Apocynaceae.It contains 7-8 species of mainly deciduous shrubs and small trees. They are native to Mexico, Central America, the Caribbean and South America as far south as Brazil[3] but have been spread throughout the world's tropics.



Description

Plumeria is related to the Oleander, Nerium oleander, and both possess poisonous, milky sap, rather similar to that of Euphorbia. Contact with the sap may irritate eyes and skin.[4] Each of the separate species of Plumeria bears differently shaped alternate leaves and their form and growth habits are also distinct. The leaves of P. alba are quite narrow and corrugated, while leaves of P. pudica have an elongated shape and glossy, dark green color. P. pudica is one of the everblooming types with non-deciduous, evergreen leaves. Another species that retains leaves and flowers in winter is P. obtusa; though its common name is "Singapore," it is originally from Colombia.


Plumeria flowers are most fragrant at night in order to lure sphinx moths to pollinate them. The flowers have no nectar, and simply dupe their pollinators. The moths inadvertently pollinate them by transferring pollen from flower to flower in their fruitless search for nectar.

Plumeria species may be easily propagated from cuttings of leafless stem tips in spring. Cuttings are allowed to dry at the base before planting in well drained soil. Cuttings are particularly susceptible to rot in moist soil. Propagation can also be by tissue culture from cuttings of freshly elongated stems or aseptically germinated seed. Pruning is best accomplished in the winter for deciduous varieties, or when cuttings are desired.
There are more than 300 named varieties of Plumeria



Etymology and common names

The genus, originally spelled Plumiera, is named in honor of the seventeenth-century French botanist Charles Plumier, who traveled to the New World documenting many plant and animal species. The common name "Frangipani" comes from an Italian noble family, a sixteenth-century marquess of which invented a plumeria-scented perfume. Many English speakers also simply use the generic name "plumeria". In Hawaii the name is "melia". In Sri Lanka it is referred to as araliya and (in English) as the Temple Tree.

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