Phoenix: Date Palm
Tuesday, March 31, 2015 Category : Sacred Trees, Symbolism Off
| Phoenix | |
|---|---|
| Date palm (Phoenix dactylifera) | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Monocots |
| (unranked): | Commelinids |
| Order: | Arecales |
| Family: | Arecaceae |
| Subfamily: | Coryphoideae |
| Tribe: | Phoeniceae |
| Genus: | Phoenix L.[1][2] |
| Synonyms[3] | |
| |
Phoenix is a genus of 14 species of palms, native to the Canary Islands east across northern and central Africa, the extreme southeast of Europe (Crete), and southern Asia from Turkey east to southern China and Malaysia.[3] The diverse habitats they occupy include swamps, deserts, and mangrove sea coasts. Most Phoenix species originate in semiarid regions, but usually occur near highgroundwater levels, rivers, or springs. The genus is unusual among members of the subfamily Coryphoideae, with it and Arenga being the only ones with pinnate, rather than palmate leaves.[4] The generic name derives from φοῖνιξ (phoinix) or φοίνικος (phoinikos), the Greek word for the date palm used by Theophrastus and Pliny the Elder. It most likely referred to the Phoenicians; Phoenix, the son of Amyntor and Cleobule in Homer's Iliad; or the phoenix, the sacred bird of Ancient Egypt (Bennu).[5] The palms were more numerous and widespread in the past than they are at present.
Description[edit]
This genus is mostly medium to robust in size, but also includes a few dwarf species; trunks are solitary in four species, suckering and clumped in nine, of which one has a prostrate ground trunk. Many of the trunked species do not form above-ground stems for several years. The pinnate leaves, 1–6 m long, all share the common feature of metamorphosed lower-leaf segments into long, vicious spines (acanthophylls). The leaves have short or absent petioles and possess the rare feature among pinnate palms of induplicate (V-shaped) leaflets. The plants are dioecious, with male and female flowers on separate plants; pollination is by both wind and insect. The flowers are inconspicuous yellowish-brown and about 1 cm wide, but grouped on conspicuous large multibranched panicles 30–90 cm long. The inflorescence emerges from a usually boat-shaped, leathery bract, forming large, pendent clusters.Phoenix fruit develops from one carpel as a drupe, 1–7 cm long, yellow to red-brown or dark purple when mature, with one elongated, deeply grooved seed.
Ecology[edit]
A majority of the forest palms grow under the shade of dominating forests trees along fragile hill slopes and stream courses in warm, humid conditions. The palms are found growing on a wide variety of soils, often extending to degraded forest margins in grasslands. In the tropics, most are found below 1250 m altitude. Branching of the aerial trunk is rare and is mainly induced by injury to the terminal growing bud. Flowering and fruit are regular and annual. The reproduction is by seeds and by vegetative multiplication. Many species of Phoenix produce vegetative offshoots called bulbils from basal portions of their stems which, on rooting, develop new saplings. Close relationship among the 14 species is illustrated by the ease of hybridisation and cross-pollination. [6] Several natural hybrids were hence obtained: P. dactylifera X. P. sylvestris(India), P. dactylifera × P. canariensis (Morocco, Algeria and Israel), and P. dactylifera × P. reclinata (Senegal). Phoenix species are used as food plants by the larvae of some Lepidoptera species, including Paysandisia archon and the Batrachedra species B. amydraula (recorded on P. dactylifera), B. arenosella and B. isochtha (feeds exclusively on Phoenix spp.).