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(Last Modified On 6/3/2013)
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(Last Modified On 6/3/2013)
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Species
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Pseudelephantopus spiralis (Less.) Cronq.
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PlaceOfPublication
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Madrofio 20: 255. 1970.
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Synonym
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Distreptus spiralis Less., Linnaea 6: 690. 1831. TYPE: Jamaica, Herb. Thunberg 20920 (UPS, not seen, IDC 1036. 878. I, 4). Spirochaeta funckii Turcz., Bull. Soc. Imp. Naturalistes Moscou 24: 167. 1851. TYPE: Venezuela, La Guayra, Funck 358, Galeotti Herb. 380 (G-Delessert Herb. 28530, not seen, MO, US, photos). Chaetospira funckii (Turcz.) Blake, Jour. Wash. Acad. Sci. 25: 311. 1935. Pseudelephantopus funckii (Turcz.) Philipson, Jour. Bot. 76: 301. 1938.
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Description
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Erect, perennial stoloniferous herbs 10-80 cm tall; stem sometimes hollow, the branches few, ascending, generally with one branch distinctly dominant, the branches to 35 cm long, hispid, with trichomes 1.3-2.5 mm long. Leaves cauline, the lower obovate to oblanceolate, basally cuneate, acute or sometimes rounded at apex, sinuate and sparsely serrate, 2-7(-14) cm long, 1.2-2.0(-4.5) cm wide, chartaceous, resin-dotted beneath when young, merely punctate later, hispid or sometimes strigose on both surfaces, the pubescence at first yellowish, later whitish, persistent, the trichomes 2.0-3.5 mm long, shorter in depauperate individuals, the leaves becoming abruptly shorter, oblong-elliptic upwards; venation somewhat obscure above; petioles winged, basally broadly expanded, apically constricted. Inflorescences several racemose-spicate branches or solitary, the flowering nodes with oblong bracts mostly to 1.5 cm long, 2-10 mm apart; clusters of heads subsessile, solitary in the axils, generally overlapping, capitate, obconic, to 9 mm high and 12 mm across, dense, 5-10-headed, the individual heads overlapping and ? distinguishable. Heads with 4 florets; involucral bracts 8, similar, in 4 decussate pairs, the outer pairs progressively shorter, the inner 2 pairs subequal, oblong-lanceolate, boat-shaped, 7-8 mm long, 1-2 mm wide, mucronate, not keeled, scabridulous and somewhat greener toward the apex, hyaline basally and along the margins; corolla blue-violet, the tube slender, ca. 3.5 mm long, the limb ca. 2.5 mm long,- -deeply divided on the adaxial side, 5-parted, the lobes ca. 1 mm long; anthers ca. 1.2 mm long, basally sagittate, the lobes ca. 0.15 mm long, apically appendaged; style branches flattened and stigmatic adaxially, ca. 1.0 mm lcng, minutely strigulose on the abaxial side of the branches and slightly
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Habit
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herbs
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Description
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below the dichotomy. Achenes obovoid, slightly flattened, 10-ribbed, 2.5-3.3 mm long, ca. 0.8 mm wide, strigulose, the trichomes 0.1 mm long, usually resin-dotted; pappus in 1 series of 5-10 bristles of approximately equal length, curled or loosely spiralled toward the apex, usually slender throughout, rarely to 0.3 mm wide at the base.
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Note
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Pseudelephantopus spiralis occurs in fields and waste areas, particularly near streams and marshes
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Distribution
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rom Costa Rica and the Lesser Antilles throughout northern South America and along the eastern slope of the Andes to Bolivia and northern Argentina. Although rare in Panama, this species is common in Colombia
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Common
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suelda con suelda
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Specimen
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DARIEN: Manene, Kirkbride & Bristan 1570 (MO, PMA). VERAGUAS: Mouth of Rio Concepcion, Lewis et al. 2775 (MO, OS, PMA).
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