Pharoideae

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Pharoideae
Pharus parvifolius Nash ssp. parvifolius Judz. (14730968949).jpg
Pharus parvifolius
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Pharoideae
L.G.Clark & Judz. (1996)
Tribe: Phareae
Stapf (1898)
Genera
Synonyms
  • Leptaspidoideae C.O. Morales (1998)
  • supertribe Pharoidae L. Liu (1980)

Pharoideae is a subfamily of the true grass family Poaceae, containing the single tribe Phareae with the two genera Leptaspis and Pharus . Its members grow on the shaded floors of tropical to warm temperate forests.

This subfamily is one of the earliest-diverging grass lineages, older than the big BOP and PACMAD clades: [1]

Poaceae

Anomochlooideae

Pharoideae

Puelioideae

BOP clade

PACMAD clade

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Crambidae Family of moths

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Panicoideae Subfamily of plants

Panicoideae is the second-largest subfamily of the grasses with over 3,500 species, mainly distributed in warm temperate and tropical regions. It comprises some important agricultural crops, including sugarcane, maize, sorghum, and switchgrass.

Centotheceae

Centotheceae is a small tribe of grasses with six species in two genera, distributed in Africa and Asia. It belongs to a basal lineage in subfamily Panicoideae, sometimes referred to as "centothecoid clade". Unlike many other clades in the subfamily Panicoideae, they use the C3 photosynthetic pathway.

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Stylidiaceae

The family Stylidiaceae is a taxon of dicotyledonous flowering plants. It consists of five genera with over 240 species, most of which are endemic to Australia and New Zealand. Members of Stylidiaceae are typically grass-like herbs or small shrubs and can be perennials or annuals. Most species are free standing or self-supporting, though a few can be climbing or scrambling.

BOP clade Clade of grasses

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Aristideae Tribe of plants

The Aristideae is the sole tribe of grasses in the monotypic subfamily Aristidoideae of the true grass family Poaceae. Its members are herbaceous annuals or perennials found in the tropics, subtropics and temperate zones. The tribe has over 300 species in three genera: The subfamily is a member of the PACMAD clade of grasses, the evolutionary group in which C4 photosynthesis independently evolved a number of times.

Oryzoideae Subfamily of plants

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Puelioideae Subfamily of plants

The Puelioideae is a subfamily of the true grass family Poaceae with two genera, Guaduella and Puelia, each in its own tribe. Its members grow in the understory of rainforests.

Anomochlooideae is a subfamily of the true grass family Poaceae. It is sister to all the other grasses. It includes perennial herbs that grow on the shaded floor of forests in the Neotropics. There are two genera, Anomochloa and Streptochaeta, each in its own tribe.

Danthonioideae Subfamily of plants

Danthonioideae is a mainly southern hemisphere subfamily of grasses, containing the single tribe Danthonieae and one unplaced genus, with altogether roughly 300 species. It includes herbaceous to partially woody perennial or annual (less common) grasses that grow in open grasslands, shrublands, and woodlands. It belongs to the PACMAD clade of grasses, but unlike some other lineages in that clade, grasses in the Danthonioideae exclusively use the C3 photosynthetic pathway. Its sister group is the subfamily Chloridoideae.

PACMAD clade A major clade in the grass family Poaceae

The PACMAD clade (previously PACCMAD, PACCAD, or PACC) is one of two major lineages (or clades) of the true grasses (Poaceae), regrouping six subfamilies and about 5700 species, more than half of all true grasses. Its sister group is the BOP clade. The PACMAD lineage is the only group within the grasses in which the C4 photosynthesis pathway has evolved; studies have shown that this happened independently multiple times.

Colubroidea Superfamily of snakes

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Micrairoideae Subfamily of plants

Micrairoideae is a subfamily of the grass family Poaceae, distributed in tropical and subtropical regions. Within the PACMAD clade, it is sister to subfamily Arundinoideae.

Paspaleae

Paspaleae is a tribe of the Panicoideae subfamily in the grasses (Poaceae), native mainly to the tropical and subtropical Americas but with a number of species introduced to other regions. It includes roughly 680 species in 39 genera. Species in this tribe use either of the C3 or C4 photosynthetic pathways.

References

  1. Grass Phylogeny Working Group II (2012). "New grass phylogeny resolves deep evolutionary relationships and discovers C4 origins". New Phytologist. 193 (2): 304–312. doi:10.1111/j.1469-8137.2011.03972.x. hdl: 2262/73271 . PMID   22115274. Open Access logo PLoS transparent.svg