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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 atrorubens Poit.
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PlaceOfPublication
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Ann. Mus. Hist. Nat. Paris 7: 466 pl. 27, f. 3, 1806.-Fig. 8.
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Synonym
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Mesosphaerum atrorubens (Poit.) 0. Ktze., Rev. Gen. P1. 2: 525, 1891.
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Description
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Herbs, slender, prostrate, rooting at the nodes, stems to 3 m long, lightly pubescent. Leaves ovate, acute, crenate-serrate, the bases rounded and attenuate, 2.5-3.5 cm long and 1-1.5 cm wide, sparsely pubescent, resin-dotted; petioles ca 0.5-1.5 cm long, narrowly margined. Inflorescences capitula, axillary, hemis- pheric, 8-10 mm in diam, the peduncles ca 0.5-2.5 cm long, the bracts obovate, 4-.6 mm long, ciliate. Flowers sessile, tufts of hair at the bases; calyx tubular, ca 3.5-4 mm long at maturity, naked within, the teeth acicular to setaceous, ca 1-1.2 mm long, pubescent between; corolla ca 4-5 mm long, white, the lower lip ca 1 mm long, pubescent; stamens shortly exserted, the filaments lightly pubescent, the anthers ca 0.2 mm long; gynobase weakly lobed, the style ca 4-5 mm long, minutely bifid near the tip. Nutlets 4, ovoid-oblong, ca 0.6-0.8 mm long, the pericarp verrucose.
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Habit
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Herbs
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Distribution
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Mexico, Guatemala, Panama, the West Indies, and northern South America.
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Specimen
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BOCAS DEL TORO: Col6n I, SW of Bocas del Toro at Macaw Hills, von Wedel 526 (MO).
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Note
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Known only from a single collection in Panama, Hyptis atrorubens has been characterized as a widespread tropical weed (Epling, 1937)-its paucity in this area may be due to poor collecting. Superficially, it resembles H. lantanaefolia, but lacks the pilose-annulate condition of the calyx tube associated with the latter species.
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