Andropogoneae

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Andropogoneae
Andropogon scoparius.jpg
Andropogon scoparius
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Clade: PACMAD clade
Subfamily: Panicoideae
Supertribe: Andropogonodae
Tribe: Andropogoneae
Dumort. (1824)
Subtribes

See text.

Synonyms [1]
  • Sacchareae Dumort. (1824)
  • Coiceae Nakai (1943)
  • Euchlaeneae Nakai (1943)
  • Imperateae Godr. & Gren. (1855)
  • Maydeae Dumort. (1824, nom. illeg.)
  • Ophiureae Dumort. (1824)
  • Rottboellieae Kunth (1829)
  • Sacchareae Rchb. ex Horan. (1847, as Saccharinae)
  • Tripsaceae C.E. Hubb. ex Nakai (1943)
  • Zeeae Rchb. (1828, unranked)
  • Zeeae Nakai (1943)

The Andropogoneae, sometimes called the sorghum tribe, are a large tribe of grasses (family Poaceae) with roughly 1,200 species in 90 genera, mainly distributed in tropical and subtropical areas. They include such important crops as maize (corn), sugarcane, and sorghum. [2] All species in this tribe use C4 carbon fixation, which makes them competitive under warm, high-light conditions. [3]

Contents

Andropogoneae is classified in supertribe Andropogonodae, together with its sister group Arundinelleae. Subdivisions include 12 subtribes, but the position of several genera within them is still unresolved ( incertae sedis ). Hybridisation was probably important in the evolution of the Andropogoneae, and the tribe's systematics are still not completely resolved. [3] From the morphological point of view, the merging of the former subtribe 'Dimeriinae' (having solitary spikelets borne in 'robust' raceme rachis ) into the subtribe Ischaeminae (having paired spikelets borne in 'fragile' raceme rachis) is doubtful. Affinities within the tribe are complex and still under investigation. [4] Mr. Shahid Nawaz, a grass specialist at the Blatter Herbarium, is working on the phylogenomics of the tribe from India.[ citation needed ]

According to preliminary phytogeographic research on the tribe by MS Kiran Raj, Peninsular India, home to 54 genera (incl. 9 endemic genera, viz., Bhidea, Lophopogon, Glyphochloa, Pogonachne, Trilobachne, Pseudodichanthium, Triplopogon, Nanooravia, and Manisuris ) and roughly 500 species, is thought to be the primary or secondary centre of diversity for Andropogonoid grasses. About 40% of the representative taxa are exclusively endemic to peninsular India, with the highest species diversity and endemicity found in genera like Arthraxon, Chrysopogon , Cymbopogon , Dichanthium , Dimeria , Heteropogon, Ischaemum, Ophiorus, Sehima, and Themeda. [5] [4]

Description

Spikelets within the inflorescence (flower cluster) are generally arranged on spicate racemes in pairs. A fertile, unstalked spikelet is subtended by a sterile, stalked spikelet. In species where awns are present they are found on the fertile, unstalked spikelet as an extension of the lemma. [6]

Subtribes and genera

2017 classification

Classification following Soreng et al. (2017): [1]

incertae sedis
Arthraxoninae
Tripsacinae
Chionachninae
Coicinae
Rottboelliinae
Ischaeminae
Germainiinae
Saccharinae
Andropogoninae

2020 classification

Classification following Welker et al. (2020) (one asterisk * marks genera not sampled in their analyses that were tentatively placed based on previously published phylogenetic analyses; two asterisks ** marks genera placed solely on morphology): [7]

Tribe Andropogoneae Dumort. – 14 subtribes, 92 genera, and about 1224 species

Related Research Articles

<i>Saccharum</i> Genus of grasses

Saccharum is a genus of tall perennial plants of the broomsedge tribe within the grass family.

<i>Calamagrostis</i> Genus of grasses

Calamagrostis is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of Calamagrostis generally occur at higher elevations. These tufted perennials usually have hairless narrow leaves. The ligules are usually blunt. The inflorescence forms a panicle. Some may be reed-like.

<span class="mw-page-title-main">Panicoideae</span> 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.

<i>Cenchrus</i> Genus of grasses

Cenchrus is a widespread genus of plants in the grass family. Its species are native to many countries in Asia, Africa, Australia, the Americas, and various oceanic islands.

<i>Bothriochloa</i> Genus of plants

Bothriochloa is a common and widespread genus of plants in the grass family native to many countries on all inhabited continents and many islands. They are often called beardgrass, bluegrass or bluestem. Some species are invasive in areas where they have been introduced.

<i>Ischaemum</i> Genus of grasses

Ischaemum is a genus in the tribe Andropogoneae, belonging to the grass family, widespread in tropical and semitropical regions in many countries. Many species are known commonly as murainagrass.

<i>Setaria</i> Genus of grasses

Setaria is a widespread genus of plants in the grass family. The name is derived from the Latin word seta, meaning "bristle" or "hair", which refers to the bristly spikelets.

<i>Chloris</i> (plant) Genus of grasses

Chloris is a widespread genus of monophyletic grasses belonging to the family Poaceae, known generally as windmill grass or finger grass. The genus is found worldwide, but especially in the tropical and subtropical regions, and more often in the Southern Hemisphere. The species are variable in morphology, but in general, the plants are less than 0.5 m in height. They bear inflorescences shaped like umbels, with several plumes lined with rows of spikelets. The genus is characterized by the series of sterile florets above the lowest fertile ones, spikes usually 4–10 in numbers, approximated or in a slightly separated series of 10–20 spikes, rarely an indefinite numbers of terminal spikes. In India, 11 species are known to occur in which only two are endemic viz. Chloris wightiana Nees ex Steud. and Chloris bournei Rangachariar & Tadulingam.

<span class="mw-page-title-main">Tussock grass</span> Species of grass

Tussock grasses or bunch grasses are a group of grass species in the family Poaceae. They usually grow as singular plants in clumps, tufts, hummocks, or bunches, rather than forming a sod or lawn, in meadows, grasslands, and prairies. As perennial plants, most species live more than one season. Tussock grasses are often found as forage in pastures and ornamental grasses in gardens.

<i>Schizachyrium</i> Genus of grasses

Schizachyrium is a widespread genus of plants in the grass family. The name is derived from the Ancient Greek words σχίζειν, meaning "to split," and ἄχυρον, meaning "chaff." It refers to either the glume or the toothed lemmas.

<i>Mnesithea</i> Genus of grasses

Mnesithea, or jointtail grass, is a genus of Asian, Australian, and Pacific Island plants in the grass family. The number of species placed in the genus varied considerably as of November 2024 depending in large part on how the genus Coelorachis was treated. Sources that synonymized Coelorachis with Mnesithea accepted about 26 species. Those that synonymized Coelorachis with Rottboellia accepted about seven.

<span class="mw-page-title-main">Stipeae</span> Tribe of grasses

The Stipeae are a tribe of grasses within the subfamily Pooidae, with up to 600 described species.

<i>Ischaemum rugosum</i> Species of grass

Ischaemum rugosum, also known as saramollagrass, is a flowering plant belonging to the grass family Poaceae in the genus Ischaemum, and is native to tropical and temperate regions of Asia, growing in marshes and other wet habitats. It is a vigorous annual, and is an invasive species in South America and Madagascar. It reaches heights of up to 1 m and is primarily recognized by the ridged surface of its sessile spikelet’s lower glume. Despite its historic importance as fodder in Asia, the grass has become a major weed in mid-latitude rice paddies throughout Asia and South America.

Claviceps pusilla, also known as bluestem ergot, is a parasitic fungus primarily of the grass tribe Angropogoneae, particularly those in the tribe referred to as "bluestem". C. pusilla occasionally manifests characteristic triangular conidia which appear to be unique among Claviceps species.

<i>Nanooravia</i> Genus of plants

Nanooravia is a monotypic genus of flowering plants belonging to the family Poaceae. The only species is Nanooravia santapaui, an annual grass, and its native range is Southern India.

References

  1. 1 2 Soreng, Robert J.; Peterson, Paul M.; Romaschenko, Konstantin; Davidse, Gerrit; Teisher, Jordan K.; Clark, Lynn G.; Barberá, Patricia; Gillespie, Lynn J.; Zuloaga, Fernando O. (2017). "A worldwide phylogenetic classification of the Poaceae (Gramineae) II: An update and a comparison of two 2015 classifications". Journal of Systematics and Evolution. 55 (4): 259–290. doi: 10.1111/jse.12262 . hdl: 10261/240149 . ISSN   1674-4918.
  2. Also called "kaoliang": "Shensi", in The Columbia-Viking Encyclopedia (1953), New York: Viking. Another spelling is "gaoliang."
  3. 1 2 Soreng, Robert J.; Peterson, Paul M.; Romschenko, Konstantin; Davidse, Gerrit; Zuloaga, Fernando O.; Judziewicz, Emmet J.; Filgueiras, Tarciso S.; Davis, Jerrold I.; Morrone, Osvaldo (2015). "A worldwide phylogenetic classification of the Poaceae (Gramineae)". Journal of Systematics and Evolution. 53 (2): 117–137. doi:10.1111/jse.12150. hdl: 11336/25248 . ISSN   1674-4918. Open Access logo PLoS transparent.svg
  4. 1 2 Kiranraj, MS (2008). "Taxonomic revision of the subtribe Dimeriinae Hack of Andropogoneae Panicoideae Poaceae in Peninsular India". Shodhganga : a reservoir of Indian theses @ INFLIBNET.
  5. Raj, Kiran, MS, M. Sivadasan and N. Ravi (2003). Grass Diversity of Kerala Endemism and its Phytogeographical Significance. In MK Jananrdhanan & D. Narasimhan (Eds.) Plant diversity, Human welfare and conservation. Goa: Goa University. pp. 8–30.{{cite book}}: CS1 maint: date and year (link)
  6. Skendzic, Elizabeth; Columbus, J. Travis; Rosa, Cerros-Tlatilpa (2007). "Phylogenetics of Andropogoneae (Poaceae: Panicoideae) Based on Nuclear Ribosomal Internal Transcribed Spacer and Chloroplast trnL–F Sequences". Aliso: A Journal of Systematic and Evolutionary Botany. 23 (1): 530–544. doi: 10.5642/aliso.20072301.40 . Retrieved 14 April 2020. Open Access logo PLoS transparent.svg
  7. Welker, Cassiano A. D.; McKain, Michael R.; Estep, Matt C.; Pasquet, Rémy S.; Chipabika, Gilson; Pallangyo, Beatrice & Kellogg, Elizabeth A. (2020). "Phylogenomics enables biogeographic analysis and a new subtribal classification of Andropogoneae (Poaceae—Panicoideae)". Journal of Systematics and Evolution. 58 (6): 1003–1030. doi:10.1111/jse.12691.