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Poaceae, also known as the true grasses, is the fourth largest plant family in the world with around 12,000 species and roughly 800 genera. [ 1 ] [ 2 ] They contain, among others, the cereal crop species and other plants of economic importance, such as the bamboos , and several important weeds .
3.1 Family Psittacidae. 3.1.1 Subfamily Psittacinae. 3.1.2 Subfamily Arinae ... The following classification is based on the most recent proposals as of 2012. [9] [10 ...
[2] [3] The name of the genus is a diminutive of the Latin word psittacus for a "parrot". [4] The genus includes 16 species, of which three are extinct. [5] †Newton's parakeet, Psittacula exsul - extinct (c.1875) Echo parakeet, Psittacula eques †Réunion parrot, Psittacula eques eques - extinct mid-18th century
The family Psittacidae or holotropical parrots is one of three families of true parrots. It comprises the 12 species of subfamily Psittacinae (the Afrotropical parrots) and 167 of subfamily Arinae (the New World or Neotropical parrots ) including several species that have gone extinct in recent centuries.
The Pooideae are the largest subfamily of the grass family Poaceae, with about 4,000 species in 15 tribes and roughly 200 genera. They include some major cereals such as wheat, barley, oat, rye and many lawn and pasture grasses. They are often referred to as cool-season grasses, because they are distributed in temperate climates. [1]
The four families are the Psittaculidae (Old World parrots), Psittacidae (African and New World parrots), Cacatuoidea (cockatoos), and Strigopidae (New Zealand parrots). One-third of all parrot species are threatened by extinction, with a higher aggregate extinction risk (IUCN Red List Index) than any other comparable bird group. [3]
The genus Poicephalus belongs to the subfamily Psittacinae of the true parrots (Psittacidae) and comprises ten species of parrots native to various regions of the Afrotropical realm, which encompasses Sub-Saharan Africa, ranging from Senegal in the west, Ethiopia in the east, and to South Africa in the south.
The name combines the Ancient Greek αγάπη agape meaning "love" and όρνις ornis meaning "bird". [5] The type species is the black-collared lovebird ( Agapornis swindernianus ), [ 6 ] which was originally placed into the genus Psittacus within a section called Psittacula by naturalist Heinrich Kuhl . [ 4 ]