(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 brevipes Poit.
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PlaceOfPublication
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Ann. Mus. Hist. Nat. Paris 7: 465, 1806.
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Synonym
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Mesosphaerum brevipes 0. Ktze., Rev. Gen. P1. 2: 525, 1891.
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Description
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Herbs, annual, erect or sometimes sprawling, to 60 cm, pubescent, the hairs long and uniseriate. Leaves lanceolate-elliptic, rarely rhomboid-ovate, acute, doubly or irregularly serrate, the bases attenuate, to 5 cm long and 2 cm wide, pubescent on both surfaces, more so on the veins beneath, resin-dotted; sessile to petioles ca 1 cm long. Inflorescences capitula, ca 1 cm in diam, the peduncles ca 0.5-1 cm long, the bracts awl-shaped and ciliate, ca 4-6 mm long. Flowers sessile, tufts of hairs at the bases; calyx ? campanulate, 3-3.5 mm long at maturity, lightly pubescent within near the orifice, obscurely 10-nerved, the teeth spinulose, ca 1.5-2 mm long; corolla ca 3 mm long, white, the lower lip ca 0.6-0.8 mm long, pubescent, the hairs uniseriate; stamens weakly exserted, the filaments ? pubescent, the anthers ca 0.2 mm long; styles ca 3 mm long, the lobes small. Nutlets 4, oblong-ovoid, ca 0.6 mm long, the pericarps slightly roughened, dark brown.
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Habit
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Herbs
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Distribution
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A widely distributed weed in tropical America, from Mexico to Argentina, but probably native to Brazil (Epling, 1949).
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Specimen
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CANAL ZONE: Barro Colorado I, Miller Trail, Shattuck 479 (F). COLON: along Rio Sirri, Trinidad Basin, Pittier 4023 (F).
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