Английская Википедия:Dracaena (plant)

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Шаблон:Short description Шаблон:Other uses Шаблон:Automatic taxobox

Dracaena (Шаблон:IPAc-en[1]) is a genus of about 120 species of trees and succulent shrubs.[2] The formerly accepted genera Pleomele and Sansevieria are now included in Dracaena. In the APG IV classification system, it is placed in the family Asparagaceae,Шаблон:Sfn subfamily Nolinoideae (formerly the family Ruscaceae).Шаблон:SfnШаблон:Sfn It has also formerly been separated (sometimes with Cordyline) into the family Dracaenaceae or placed in the Agavaceae (now Agavoideae).

The name dracaena is derived from the romanized form of the Ancient Greek Шаблон:Lang – drakaina, "female dragon".[3]

The majority of the species are native to Africa, southern Asia through to northern Australia, with two species in tropical Central America.

Description

Species of Dracaena have a secondary thickening meristem in their trunk, termed Dracaenoid thickening by some authors,Шаблон:Citation needed which is quite different from the thickening meristem found in dicotyledonous plants. This characteristic is shared with members of the Agavoideae and Xanthorrhoeoideae among other members of the Asparagales.

Dracaena species can be classified in two growth types: treelike dracaenas (Dracaena fragrans, Dracaena draco, Dracaena cinnabari), which have aboveground stems that branch from nodes after flowering, or if the growth tip is severed, and rhizomatous dracaenas (Dracaena trifasciata, Dracaena angolensis), which have underground rhizomes and leaves on the surface (ranging from straplike to cylindrical).Шаблон:Citation needed

Many species of Dracaena are kept as houseplants due to tolerance of lower light and sparse watering.[4]

Species

Plants of the World Online currently includes:[5] Шаблон:Div col

Шаблон:Div col end

Formerly regarded as dracaena

Шаблон:Update

Uses

Ornamental

Some shrubby species, such as D. fragrans, D. surculosa, D. marginata, and D. sanderiana, are popular as houseplants. Many of these are toxic to pets, though not humans, according to the ASPCA among others. Rooted stem cuttings of D. sanderiana are sold as "lucky bamboo", although only superficially resembling true bamboos.

Dracaena houseplants like humidity and moderate watering. They can tolerate periods of drought but the tips of the leaves may turn brown.[10] Leaves at the base will naturally yellow and drop off, leaving growth at the top and a bare stem.[10] Dracaena are vulnerable to mealybugs and scale insects.[10]

Other

A naturally occurring bright red resin, dragon's blood, is collected from D. draco and, in ancient times, from D. cinnabari. Modern dragon's blood is however more likely to be from the unrelated Daemonorops rattan palms.Шаблон:Efn It also has social functions in marking graves, sacred sites and farm plots in many African societiesШаблон:Sfn

References

Notes

Шаблон:Notelist

Citations

Шаблон:Reflist

Sources

Шаблон:Refbegin

Шаблон:Refend

Further reading

Шаблон:Refbegin

Шаблон:Refend

External links

Шаблон:Taxonbar Шаблон:Authority control

Партнерские ресурсы
Криптовалюты
Магазины
Хостинг
Разное

  1. ↑ Ошибка цитирования Неверный тег <ref>; для сносок SunsetBooks1995 не указан текст
  2. ↑ Ошибка цитирования Неверный тег <ref>; для сносок theplantlist.org не указан текст
  3. ↑ Merriam-Webster Dictionary
  4. ↑ Шаблон:Cite web
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок plantsoftheworldonline.org не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок wcsp не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок exton-garten не указан текст
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок davesgarden.com не указан текст
  9. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MMPNDb не указан текст
  10. ↑ 10,0 10,1 10,2 Шаблон:Cite book
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