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(Last Modified On 4/4/2013)
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(Last Modified On 4/4/2013)
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Species
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Hyptis capitata Jacq.
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PlaceOfPublication
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Coll. 1: 102, 1787.
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Synonym
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Mesosphaerum capitatum (Jacq.) 0. Ktze., Rev. Gen. P1. 2: 525, 1891. Hyptis capitata var. pilosa Briq., Ann. Conserv. Jard. Bot. Geneve 2: 224, 1898.
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Description
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Herbs, perennial, sparsely pubescent, to 2 m. Leaves ovate to ? rhomboid, acute, irregularly serrate, the bases obtuse to ? attenuate, to 12 cm long and 6 cm wide, glabrous to sparsely pubescent; subsessile to petioles ca 2-3 cm long. Inflorescences capitula, densely-flowered, axillary, 2-3 cm in diam, the peduncles ca 2-7 cm long; the bracts ovate-lanceolate, ca 5-7 mm long, sparsely pubescent, frequently reflexed and hidden at maturity. Flowers sessile; calyx tubular, ca 6-8 mm long at maturity, membranaceous, pilose-annulate within above the nutlets, sometimes only sparsely so, teeth spinulose, ca 1.5-2 mm long; corolla tube ca 3-3.5 mm long, white, the lower lip larger, ca 1 mm long, pubescent; stamens exserted, the filaments ? glabrous, the anthers ca 0.2 mm long. Nutlets (3-)4, ovoid, the lobes of the gynobase adhering, ca 1-1.2 mm long, pale to dark brown, the pericarp ? smooth.
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Habit
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Herbs
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Distribution
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A common weed of the American tropics, from Mexico to Colombia and Venezuela and west to Peru and Ecuador.
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Specimen
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BOCAS DEL TORO: region of Almirante, Cooper 82 (F). CANAL ZONE: Barro Col- orado I, Fairchild Pt, Ebinger 284 (MO); Wetmore & Abbe 59 (F); Barro Colorado I, nr Laboratory, Wetmore & Abbe 172 (F). CHIRIQUI: vic of Boquete, Woodson & Schery 798 (MO). COCLE: s. loc., Blum & Tyson 1888 (MO); El Valle de Anton, Lewis et al. 2527 (MO). DARIEN: ViC of Santa Fe, Duke 9489 (MO); vic of Mannene, Kirkbride & Bristan 1585 (MO); vic of Tucuti, Terry & Terry 1402 (MO); Punta Mala, Tyson 2716 (MO); Tonosi, on river bank, Tyson et al. 2998 (MO). LOS SANTOS: vic of headwaters of Rio Pedrogal, Lewis et al 2970 (MO). PANAMA: Isla del Rey, Duke 9522 (MO), 9567 (MO); E slope of Cerro Jefe, Tyson 3414 (MO). SAN BLAS: mainland opposite Ailigandi, Lewis et al. 69 (MO).
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