Digitaria insularis, (L.) Fedde

Medico, Julia Mariela Lo, Tosto, Daniela Sandra, Rua, Gabriel Hugo, Agrasar, Zulma Esther Rúgolo de, Scataglini, Maria Amalia & Vega, Andrea Susana, 2017, Phylogeny of Digitaria Sections Trichachne and Trichophorae (Poaceae, Panicoideae, Paniceae): A Morphological and Molecular Analysis. New Circumscription and Synopsis, Systematic Botany (Basel, Switzerland) 42 (1), pp. 37-53 : 45-48

5. DIGITARIA INSULARIS (L.) Fedde , Just’ s Bot. Jahresber. 31: 778. 1904.

Andropogon insularis L. , Syst. Nat. (ed. 10) 2: 1304. 1759. Panicum insulare (L.) G. Mey ., Prim. Fl. Esseq.: 60. 1818. Trichachne insularis (L.) Nees , Fl. Bras. Enum. Pl. 2: 86. 1829. Tricholaena insularis (L.) Griseb., Abh. Königl. Ges. Wiss. Göttingen 7: 265. 1857 . Syntherisma insulare (L.) Millsp. & Chase, Publ. Field Columb. Mus., Bot. Ser. 1: 473. 1902 . Valota insularis (L.) Chase, Proc. Biol. Soc. Wash. 19: 188. 1906 . Digitaria insularis (L.) Mez ex Ekman, Ark. Bot. 11 (4): 17. 1912 , comb. superfl.

— TYPE: JAMAICA. P. Browne s. n. (lectotype: LINN –1211.20, designated by A. S. Hitchcock, Contr. U.S. Natl. Herb. 12: 126. 1908) .

Panicum leucophaeum Kunth , Nov. Gen. Sp. (quarto ed.) 1: 97. 1815 [1816]. Panicum insulare var. leucophaeum (Kunth) Kuntze, Revis. Gen. Pl. 3 (3): 361. 1898. Digitaria leucophaea (Kunth) Stapf, Fl. Cap. 7: 382. 1898.

— TYPE: VENEZUELA. Cumaná , A. Humboldt & A. J.A. Bonpland s. n. (holotype: P00128872 !; isotypes: BAA –634!, P00128873!, US –2578918) .

Panicum falsum Steud. , Syn. Pl. Glumac. 1: 67. 1853.

— TYPE: “Ins. Cuba ” (holotype: P) .

Panicum duchaissingii Steud. , Syn. Pl. Glumac. 1: 93. 1853.

— TYPE: “ Duchaissing legit in Guadaloupe ” (holotype: P) .

Iconography — Henrard (1950: 347, spikelet and upper floret); Vega and Rúgolo de Agrasar (2012: 298).

Geographical Distribution and Ecology — U. S. A. to Argentina. It is frequent in varied habitats as a weed in tropical and subtropical crops, also along the roadsides and sandy lands from sea level to 1,900 m.