Dichanthium annulatum (Forssk.) Stapf
  • Fl. Trop. Afr.


Cite taxon page as 'WFO (2020): Dichanthium annulatum (Forssk.) Stapf. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000863549. Accessed on: 26 Oct 2020'

General Information

Perennial. Culms tufted, erect or sometimes straggling, 30–100 cm tall, nodes bearded with spreading hairs. Leaf sheaths terete, shorter than internodes; leaf blades flat, 8–30 × 0.2–0.4 cm, glabrous or adaxial surface stiffly pilose, margins smooth or scaberulous, apex acuminate; ligule 1–2 mm, lacerate. Inflorescence terminal; peduncle glabrous; racemes 2–8, subdigitate, suberect, 4–5 cm, with 0–6 pairs of homogamous spikelets. Sessile spikelet 3–5 mm; lower glume elliptic-oblong or oblong, firmly papery, 5–9-veined, subglabrous or pubescent to villous on lower back, upper flanks often with long spreading hairs, keels shortly ciliate, not or barely winged, apex obtuse; upper glume ciliate along keel and margins, apex acute or obtuse; awn 1.6–2.4 cm. Caryopsis obovate. Pedicelled spikelet many-veined, pubescent to villous with spreading tubercle-based hairs. Fl. and fr. Jun–Nov. 2n = 20, 40.

  • Provided by: [F].Flora Of CHina @ efloras.org
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    1. Dichanthium annulatum (Forsskal) Stapf in Prain, Fl. Trop. Afr. 9: 178 (1917).

    Por G. Davidse y R.W. Pohl.

    Andropogon annulatus Forsskal, Fl. Aegypt-Arab. 173 (1775). Holotipo: Egipto, Forsskal s.n. (C).

    Perennes. Tallos 50-90 cm, decumbentes, ramificados; nudos pilosos. Vainas glabras; lígula 1.1-1.5 mm; láminas 4-16 cm x 2-5 mm, esparcidamente piloso-papilosas en el haz. Inflorescencia 3-7 cm; pedúnculo glabro; racimos (1-)2-7, subdigitados, pedunculados; entrenudos del raquis c. 3 mm. Espiguillas sésiles 3-3.5 mm; gluma inferior oblonga, 9-11-nervia, obtusa, pilosa, ciliada, el ápice papiloso-ciliado; lema inferior 2.6-2.8 mm; arista 15-20 mm, geniculada, torcida; anteras 3, c. 2 mm. Escapada de cultivo y naturalizada. Y (Davidse et al. 20579, ISC); B (Dwyer 11181, MO); G (Walker 1431, MO); N (Stevens y Montiel 20618, ISC); CR (Pohl y Davidse 10914, ISC); P (Carrasquilla 1926, MO). 0-200 m. (Nativa de África y Asia tropical; introducida a América tropical.)

  • Provided by: [H].Flora Mesoamericana
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    DICHANTHIUM Willemet

    Por Gerrit Davidse y Richard W. Pohl

    Dichanthium annulatum (Forssk.) Stapf in Prain, Fl. Trop. Afr. 9: 178. 1917; Andropogon annulatus Forssk.

    Perennes cespitosas; tallos 50–90 cm de largo, decumbentes, ramificados; nudos pilosos; plantas hermafroditas. Vainas redondeadas, glabras; lígula una membrana ciliada 1.1–1.5 mm de largo; láminas 4–16 cm de largo y 2–5 mm de ancho, esparcidamente piloso-papilosas en la haz. Inflorescencia 3–7 cm de largo, pedúnculo glabro, racimos (1–) 2–7, subdigitados, pedunculados, raquis articulado con entrenudos ca 3 mm de largo, entrenudos del raquis y pedicelos sólidos, truncados a oblicuos en el ápice, ciliados marginalmente, pedicelos libres; espiguillas pareadas, los 1–varios pares inferiores homomorfos, con espiguillas estériles, bisexuales, sin aristas, los pares superiores dimorfos, con una espiguilla sésil, aristada y con una espiguilla pedicelada, estéril, no aristada; espiguillas sésiles 3–3.5 mm de largo, comprimidas dorsalmente, similares en tamaño y forma a las espiguillas pediceladas, marcadamente traslapadas, con 2 flósculos, callo obtuso, gluma inferior oblonga, obtusa, pilosa, ciliada, el ápice papiloso-ciliado, coriácea, redondeada en el dorso, 9–11-nervia, gluma superior tan larga como la inferior o un poco más corta que ella, membranácea, carinada, 3-nervia, flósculo inferior estéril, lema inferior 2.6–2.8 mm de largo, hialina, enervia, arista 15–20 mm de largo, geniculada, torcida, pálea inferior ausente, flósculo superior bisexual, lema superior entera, reducida a la base blanquecina de una arista geniculada, torcida y café, pálea superior ausente, lodículas 2, estambres 3, las anteras ca 2 mm de largo, estilos 2. Fruto una cariopsis; hilo punteado.

    Escapada de cultivo y naturalizada, Granada, Managua; 60 m; fl y fr ago, nov; Pedroza s.n., Stevens 20618; nativa de Africa y Asia tropical, introducida a América tropical. Género con 20 especies del Viejo Mundo; algunas especies introducidas en América.

  • Provided by: [G].Flora de Nicaragua
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    Plantas 40–85 cm. Hojas con lígula 1–1.5 mm; lámina 3.5–15(–17.5) cm × 3–6 mm, el haz espar-cidamente papiloso-pilosa. Infl. 2.5–7 cm, subdigitada, con (1)2–7 racimos; pedúnculo glabro; entrenudos del raquis ca. 3 mm. Espiguillas 3–3.6 mm; gluma inferior 9–11-nervada; lema inferior 2.5–2.8 mm; arista14–23 mm.

  • Provided by: [D].Manual de Plantas de Costa Rica
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    Morphology

    Tufted perennial up to 1 m. high.

  • Provided by: [E].Plants Of the World Online Portal - FWTA
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    Caespitose, decumbent or erect perennial with distinct short rhizomes; culms up to 200 cm high, woody and persistent, robust, geniculately ascending, simple or branched; nodes exposed and densely barbate; internodes glabrous; leaf sheaths glabrous or sparsely pilose; ligule a glabrous membrane c. 2 mm long; leaf laminas up to 30 cm × 4–4.5 mm, linear-lanceolate, glabrous for most of their length but long-pilose near the ligule.

  • Provided by: [C].Plants Of the World Online Portal - FZ
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    Sessile spikelets 2–6 mm long, oblanceolate; inferior glume slightly concave, pubescent below the middle, with long tubercle-based cilia above; superior glume slightly shorter than the inferior, glabrous except for the often shortly ciliate keel and apex; inferior floret barren, the lemma c. 3.8 mm long, ovate, hyaline; superior floret stipitiform, the lemma c. 3 mm long; awn c. 25 mm long, minutely hispidulous on both column and bristle; anthers c. 1.5 mm long.

  • Provided by: [C].Plants Of the World Online Portal - FZ
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    Racemes 2–many, subdigitate, shortly pedunculate, the peduncles glabrous; rhachis internodes and pedicels pilose, sometimes on one side only; the lowermost 1–6 spikelet pairs usually homogamous, male or neuter.

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    Pedicelled spikelets similar to the sessile spikelets in size and shape, often slightly smaller, male or neuter.

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    Leaf-blades 3–30 cm. long, 2–7 mm. wide.

  • Provided by: [A].Plants Of the World Online Portal - FTEA
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    Perennial; culms 25–100 cm. high, geniculately ascending.

  • Provided by: [A].Plants Of the World Online Portal - FTEA
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    Sessile spikelet narrowly oblong, 2–6 mm. long; lower glume firmly cartilaginous, slightly concave, pubescent to villous below the middle, with long bulbous-based hairs above, obtuse to subacute; awn 8–25 mm. long.

  • Provided by: [A].Plants Of the World Online Portal - FTEA
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    Inflorescence composed of (1–)2–15 subdigitate shortly pedunculate racemes, the peduncles glabrous; racemes 3–7 cm. long, the spikelets subimbricate with 0–6 smaller homogamous pairs at the base.

  • Provided by: [A].Plants Of the World Online Portal - FTEA
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    Densely tufted perennial, up to 1 m tall, nodes with a ring of spreading hairs. Leaves linear-lanceolate, ligule membranous. Inflorescence of 2-many digitate or subdigitate racemes (30-)60-80 mm long, spikelets paired in a sessile and pedicellate combination of dissimilar spikelets. Sessile spikelets 2.5-5 mm long, with long hairs, dorsiventrally compressed; lower glume obtuse to truncate, subapical fringe of long hairs present; lemma awn 8-25 mm long, curved, column (basal part of awn) twisted. Pedicellate spikelets awnless.

  • Provided by: [B].e-Flora of South Africa
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    Habitat

    Disturbed places.

  • Provided by: [B].e-Flora of South Africa
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    Distribution

    South Africa to Ethiopia.

  • Provided by: [B].e-Flora of South Africa
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     Information From

    Plants Of the World Online Portal - FTEA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • A
    e-Flora of South Africa
    e-Flora of South Africa. v1.21. 2018. South African National Biodiversity Institute. http://ipt.sanbi.org.za/iptsanbi/resource?r=flora_descriptions&v=1.21
    • B All Rights Reserved
    Plants Of the World Online Portal - FZ
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • C
    Manual de Plantas de Costa Rica
    http://www.tropicos.org/Project/Costa%20Rica
    Hammel, B. E.; Grayum, M. H.; Herrera, C.; Zamora, N. Manual de Plantas de Costa Rica. Missouri Botanical Garden Press, 2003-2014
    • D Missouri Botanical Garden
    Plants Of the World Online Portal - FWTA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • E The Trustees of the Royal Botanic Gardens, Kew
    Flora Of CHina @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=2
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • F Missouri Botanical Garden
    Flora de Nicaragua
    http://www.tropicos.org/projectwebportal.aspx?projectid=7&pagename=Home&langid=66
    WD Stevens, CU Ulloa, A Pool and OM Montiel. Missouri Botanical Garden Press, 2001
    • G Missouri Botanical Garden
    Flora Mesoamericana
    http://www.mobot.org/MOBOT/fm/
    Gerrit Davidse, Mario Sousa Sánchez, A. O. Chater, Universidad Nacional Autónoma de México. Instituto de Biología, Missouri Botanical Garden, Natural History Museum (London, England) UNAM, 1994
    • H Missouri Botanical Garden
    Poaceae
    • I CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • J CC0 1.0 Universal (CC0 1.0).