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(Last Modified On 11/6/2013)
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Subspecific
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Ichnanthus procurrens var. procurrens
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Synonym
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Panicum procurrens Nees ex Trin. var. genuinum Doell in C. Martius, Fl. Bras. 2(2): 272. 1887, name invalid, not an autonym (Greuter et al., 1988). Panicum procurrens Nees ex Trin. var. genuinum forma villosum Doell in C. Martius, Fl. Bras. 2(2): 272. 1887. Panicum procurrens Nees ex Trin. var. genuinum forma glabratum Doell in C. Martius, Fl. Bras. 2(2): 272. 1887. TYPE: Brazil. 1814-1820, Sellow 1249 (lectotype, designated by Stieber (1987), US frag- ment ex B).
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Distribution
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Brazil
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Description
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Culms 30-80 cm long, internodes 0.7-1.5 mm diam.; leaf blades lanceolate to linear (length: width ratio 6.2-17.8:1). Panicles 35-70 mm long; ra- cemes 5-10(-18), each with a medial cluster of 2- 5 paired spikelets separated by internodes 1-2.5 mm long, pedicels unequal, 0.5 mm long and 1.5- 3.0 mm; spikelets 3-3.9 mm long, lower glume 12 to 34 as long as the spikelet; apex of upper glume and lower lemma blunt; upper floret 2.0-2.5 mm long.
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Specimen
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BOLIVIA. SANTA CRUZ: Sara, Buena Vista, 500 m, 17 Feb. 1921, Steinbach 7012 (F, MO, NY); Nuflo de Chavez, Estancia Santa Maria, 5 km S of Concepci6n, 480 m, 21 Jan. 1986, Killeen 1642 (F, ISC, MO); Estancia Salta, 10 km SE of Concepci6n, 490 m, 8 Jan. 1987, Killeen 2285 (F, ISC, MO); Velasco, 10 km E of Santa Rosa de la Roca, 400 m, 22 Jan. 1985, Killeen 776 (F, ISC, MO). BENI: Ixiamas, 300 m, 13 Dec. 1921, Cardenas 1909 (F, NY); Mamor6, 2 mi. S of San Joaquin, 7 Mar. 1964, Tyson & Kuns 951 (MO); Yacuma, Estaci6n Biolo6gica del Beni, 200 m, 18 July 1987, Killeen 2590 (US). BRAZIL. BAHIA: Espigao Mestre, 100 km WSW of Barreiras, 750 m, 5 Mar. 1972, Anderson et al. 36619 (F, MO, NY, US). DISTRITO FEDERAL: E of Lagoa Paranoa, 975 m, 10 Dec. 1967, Irwin et al. 11167 (F, MO, NY); Reserva Ecol. do IBGE-DF, 3 Dec. 1981, Filgueras 942, (US). GOIAS: Annapolis, 1,000 m, 18 Mar. 1930, Chase 11347 (US); 25 km S of Niquelandia, 750 m, 24 Jan. 1972, Irwin et al. 34970 (MO, US); Serra do Rio Preto, 8 km E of Cabeceiras, 18 Nov. 1965, Irwin et al. 10445 (F, MO, NY, US); Goiania, 1,000 m, 20 Mar. 1930, Chase 11415 (F, MO, US); Chapada dos Veadeiros, 8 km NW of Veadeiros on road to Cavalcante, 1,200 m, 22 Oct. 1965, Irwin et al. 9496 (F, NY, US); Serra dos Pirineus, 21 km E of Piren6polis, 1,000 m, 16 Jan. 1972, Irwin et al. 34381 (F, MO, NY, US). MARANHAO: Carolina to San Antonio de Balsas, 20-25 Mar. 1934, Swallen 4019 (US); Grajahu to Porto Franco, 8-13 Mar. 1934, Swallen 3791 (US). MATO GROSSO: Rio Sangrador prope Cuyaba, 9 Dec. 1893, Lindman 2575 (US); 85 km N of Xav- antina, 2 June 1966, Hunt & Ramos 5727 (NY, US); 209 km NNE of Xavantina, Landicos Restaurant, Eiten & Eiten 9821 (US). MATO GROSSO DO SUL: Tres Lagoas, 300-325 m, 4 Feb. 1930, Chase 10724 (F, US); Co- rumba, Niquelandia, 19 Nov. 1977, Allem & Vieira 1355 (MO); Paiaguas, Fazenda Santana, 18 June 1977, Allem & Vieira 938 (MO); Fazenda Santo Estevao, 14 Dec. 1977, Allem & Vieira 1190 (MO); Caceres, Fa- zenda Descalvados, 5 Nov. 1978, Allem et al. 2430 (MO). MINAS GERAIS: Sao Miguel, NW of Formiga, 600- 625 m, Chase 10554 (US); Lavras, 6 Mar. 1925, Chase 8743 (F, NY, MO); Faria, Serra da Bocaina, 100-1,200 m, 9 Jan. 1930, Chase 10554 (F, MO, NY); Buritys, near Rio Sao Francisco, 1 Jan. 1930, Chase 10451 (US); Belo Horizonte, Vila Progresso, 10 Jan. 1940, Magalhdes 1 (US); Serra do Cabral, 2.5 km W of Cantoni, 850 m, Irwin et al. 27278 (F, MO, NY). PARA: Serra do Ca- chimbo, 425 m, 16 Dec. 1956, Pires et al. 6354 (NY, US); Munic. Conceiqao do Araguaia, 20 km W of Re- den;ao, 350-620 m, Plowman et al. 8724 (NY, US); 4 km W of Redendao on PA- 150, 200 m, 21 Feb. 1980, Plowman et al. 8986 (MO, NY, US). SAO PAULO: Ita- petininga, Sorocaba, 600 m, 4 Feb. 1965, Clayton 4513 (NY, US); Itapetininga, 11 Dec. 1887, Loefgren s.n. (US); Ypiranga, Dec. 1910, Luederwaldt 9923 (NY, US) Yti, 20 Oct. 1897, Russel 35 (US). PARAGUAY. In regione cursus superioris fluminis Apa, Nor 7818 (MO, NY).
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Note
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Flowering from December to June. Occurring throughout central Brazil and eastern Bolivia (Fig. 3). This species most commonly occurs in the sea- sonally humid microhabitats of valley-side campos and pantanal complexes; it is less common in sea- sonally inundated savanna and rarely occurs in well- drained cerrado savanna. Specimens from Para and northern Mato Grosso are intermediate to I. annuus; I. procurrens var. procurrens intergrades with the subsequent variety.
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