Cyperus digitatus Roxb.
  • Fl. Ind.

Cite taxon page as 'WFO (2020): Cyperus digitatus Roxb. Published on the Internet; Accessed on: 15 Jul 2020'

General Information

Perennials. Rhizomes woody, very short. Culms tufted, 0.5-1.5 m tall, stout, triquetrous, smooth, basally with leaves. Leaves nearly as long as culm; sheath purplish brown, long; leaf blade 4-15 mm wide, flat or folded, subleathery. Involucral bracts 5-7, leaflike, longer than inflorescence. Inflorescence a compound or decompound anthela; rays 6-10, usually to 18 cm, each with 4-7 raylets; raylets unequal in length. Spikes at apical part of raylets, cylindric, 3-6 × 0.4-2 cm, without a peduncle, with many laxly arranged spikelets. Spikelets subdistichous, linear to narrowly ovoid, 3-12 × 1-1.5 mm, slightly compressed to compressed, spreading to obliquely spreading, 4-40-flowered; rachilla winged, wings lanceolate and laterally detaching from rachilla with nutlet maturation, with successive glumes 0.9-1.2 mm apart. Glumes straw-colored, reddish brown, or golden-yellow on both surfaces, densely imbricate, ovate to elliptic, 3-5-veined, keel greenish, apex mucronate. Stamens 3; anthers yellow, linear, ca. 0.5 mm; connective not prominent beyond anther apex. Style long; stigmas 3, shorter than style. Nutlet dark gray at maturity, oblong-ellipsoid, 1/2-3/5 as long as subtending glume, 3-sided, puncticulate. Fl. Jul-Oct, fr. Aug-Dec. 2n = 84, 104, 108.

  • Provided by: [B].Flora Of CHina @
    • Source: [
    • 2
    • ]. 

    Herbs, perennial, rhizomatous, coarse. Culms trigonous, 50–150 cm × 2–15 mm, glabrous (rarely sparsely scabridulous on angles proximal to bracts). Leaves inversely W-shaped, 40–100 cm × 5–15 mm. Inflorescences: spikes 1–4, cylindric, (2.5–)3.5–5 × 1.2–1.5 cm; rays 8–10, (1–)15–35 cm; 2d order rays 1–3 cm; bracts 8–12, ascending at 45–60°, (5–)20–80 cm × 3–15 mm; 2d order bracts 3–7 cm × 2–4 mm; rachilla persistent, wings 0.3 mm wide, at achene maturation adaxial edge of wing detaching from rachilla, base remaining firmly attached. Spikelets 35–65, slightly compressed, linear, ± quadrangular, 5–8 × 0.8–1.1 mm; floral scales deciduous, 12–16, appressed, marginally clear, laterally reddish along midrib, medially green, laterally 1–2-ribbed, medially strongly 5-ribbed, ovate, 1.6–1.8 × 1.1–1.3 mm, apex mucronulate. Flowers: anthers 0.4–0.5 mm, connective blunt, at most 0.1 mm; styles 0.8–1 mm; stigmas 0.4 mm. Achenes brown or whitish, sessile, ellipsoid, slightly wider at base, 0.9 × 0.4 mm, surfaces finely puncticulate.

  • Provided by: [G].Flora of North America @
    • Source: [
    • 3
    • ]. 

    5. Cyperus digitatus Roxb., Fl. Ind. 1: 209 (1820). Tipo: India.

    Por C.D. Adams.

    Cyperus bourgaei C.B. Clarke ex Lundell, non C.B. Clarke, C. imbricatus auct, non Retz.

  • Provided by: [F].Flora Mesoamericana
    • Source: [
    • 4
    • 1
    • ]. 

    Cyperus digitatus Roxb., Fl. Ind. 1: 209. 1820.

    Perennes, cespitosas, rizomas endurecidos, 10–20 mm de largo y de grueso; culmos triquetros, 50–150 cm de alto. Hojas con láminas en forma de M, 40–100 cm de largo. Brácteas de la inflorescencia 8–12, ascendentes, 20–80 cm de largo, rayos 8–10, hasta 35 cm de largo, rayos secundarios hasta 3 cm de largo, espigas cilíndricas, 3.5–5 cm de largo; espiguillas 35–65, lineares, cuadrangulares, 5–8 mm de largo y 0.8–1.1 mm de ancho, amarillentas o blanco-argénteas, raquilla alada, persistente; escamas 12–16, ovadas, 1.6–1.8 mm de largo y 1.1–1.3 mm de ancho, 7–9-nervias, sin nervios laterales, caducas; estambres 3, anteras 0.4–0.5 mm de largo; estigmas 3. Fruto trígono, elipsoide, ca 0.9 mm de largo y 0.4 mm de ancho, apiculado, finamente punteado, café o crema, sésil.

    Ocasional en zanjas y pastizales muy húmedos, zona pacífica; 0–800 m; fl y fr todo el año; Fonseca 101, Sandino 812; pantropical.

  • Provided by: [C].Flora de Nicaragua
    • Source: [
    • 5
    • ]. 

    Plantas perennes o anuales, con rizomas; culmos 40–150 cm, robustos. Hojas 1–3, 40–100 cm; lámina hasta ca. 15 mm de ancho, escábrida. Infl. con brácteas primarias y secundarias, foliiformes; rayos desiguales, hasta ca. 30 cm; rayos secundarios hasta ca. 3 cm; espigas 2.5–6 1.5 cm, cilíndricas. Espiguillas numerosas, 5–10 × 0.8–1 mm; raquilla alada; glumas oblongo-ovadas, verde-carinadas, mucronadas. Fls. con 3 estambres. Aquenios 0.7–0.9 × 0.3–0.4 mm, oblongo-elipsoides, desigualmente trígonos, apiculados, subestipitados, punticulados, pardo grisáceo o pardo púrpura.

  • Provided by: [D].Manual de Plantas de Costa Rica
    • Source: [
    • 6
    • ]. 

    Distribution Map

    • Native distribution
    Found in
    • Southern America Brazil Amazonas
    • Parí
    • Bahia
    • Ceará
    • Maranh
    • Pernambuco
    • Minas Gerais
    • Mato Grosso

     Information From

    • A CC0 1.0 Universal (CC0 1.0).
    Flora Of CHina @
    'Flora of China @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • B Missouri Botanical Garden
    Flora de Nicaragua
    WD Stevens, CU Ulloa, A Pool and OM Montiel. Missouri Botanical Garden Press, 2001
    • C Missouri Botanical Garden
    Manual de Plantas de Costa Rica
    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
    Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
    Brazil Flora G (2014): Brazilian Flora 2020 project - Projeto Flora do Brasil 2020. v393.147. Instituto de Pesquisas Jardim Botanico do Rio de Janeiro. Dataset/Checklist. doi:10.15468/1mtkaw
    • E Group Brazil Flora, REFLORA Program
    Flora Mesoamericana
    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
    • F Missouri Botanical Garden
    Flora of North America @
    'Flora of North America @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • G Flora of North America Association
    World Flora Online consortium
    World Flora Online Data. 2018.
    • H CC0 1.0 Universal (CC0 1.0).