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(Last Modified On 3/12/2013)
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(Last Modified On 3/12/2013)
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Species
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SIDA LINIFOLIA Cav.
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PlaceOfPublication
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Mon. Cl. Diss. Dec. 14, t. 2(1). 1785.
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Description
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Herb, annual or biennial, the stem erect, simple or more or less branched above, up to more than 1 m high, the branches suberect, pubescent with simple and/or stellate hairs. Leaves short-petiolate, the petiole 3-10 mm long, pilose, the stipules filiform to narrowly lanceolate, 4-7 mm long, pilose; blade linear or nar- rowly lanceolate, rounded or truncate or infrequently shallowly subcordate at the base, acute at the apex, entire-margined, 2-14 cm long and 2-15 mm broad, 3-nerved from the base, pubescent with simple and/or stellate hairs, the indumentum usually denser beneath, the main veins prominulous beneath. Inflorescences termi- nal, corymbiform or short-racemose, 8- to 20-flowered. Flowers with the pedicel 6-15 mm long, articulated 2-3 mm below the apex, hirtellous; calyx campanulate, subterete, 4.8-7 mm long, hirtellous to hirsute, persistent, the lobes triangular, acute, ca 2-4 mm long and 2.5-3 mm broad at the base; petals obovate, 8-15 mm long and 4-5 mm wide, cream-colored or whitish, usually with a maroon or dark purple center; staminal tube ca 2-3 mm long, minutely hyaline-puberulus near the apex, the filaments 0.5-1.0 mm long; styles 5-6 mm long, connate basally. Mericarps (5-)7-9, trigonous, shortly 2-apiculate, 2.5-3.5 mm long, papyraceolus, dull, brownish-black, glabrous, the lateral walls fragile and fragmenting at ma- turity; seeds ca 2 mm long, dull, dark brown, glabrous except for a few minute hairs around the hilum.
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Habit
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Herb
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Distribution
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Tropical America and tropical Africa; dry savannas, brushy and grassy slopes, grassy fields.
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Specimen
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CANAL ZONE: along drowned Rio Azote Caballo, alt 66-70 m, Dodge et al. 16829 (MO); along the old Las Cruces Trail, between Fort Clayton and Corozal, Standley 29161 (US); Gorozal, Standley 27363 (US); Cerro Ancon, 1. M. & M. T. Greenman 5118 (MO), Bro. Heriberto 60 (US), Standley 25170 (US), 26320 (US). CHIRIQUI: Boquete, elev 4000 ft, M. E. Davidson 752 (F); vie of Boquete, Llanos Francia, alt 3300 ft, Stern et al. 1179 (MO, US). COCLEf: Penonome and vie, R. S. Williams 180 (US). PANAMA: Nueva Gorgona, Duke 4542 (MO); along road toward top of Cerro Campana, Duke 6015 (MO); Cerro Campana, Ebinger 911 (MO); N of Panama City, Bro. Paul 550 (US); vie of Juan Franco Race Track, Standley 27824 (US); nr Punta Paitilla, Standley 26298 (US); Las Sabanas, Bro. Heriberto 144 (US); between Las Sabanas and Matias Hernandez, Standley 31867 (US); Rio Tapia, Standley 28177 (US); Rio Tocumen, Standley 29478 (US); Pacora, Killip 3280 (US); Laguna de Portala, nr Chepo, alt 50 m, Pittier 4596 (US); nr Chepo, alt 30 m, Hunter & Allen 32 (F, MO, US); Taboga Island, alt 0-250 m, Pittier 3595 (US); San Jose Island, Erlanson 288 (GH, US), Johnston 927 (GH, MO, US), 946A (GH), 1162 (GH), 1182 (GH), 1213 (GH, MO).
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