(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 GLABRA Mill.
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PlaceOfPublication
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Gard. Dict. ed. 8. 1768.
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Synonym
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Sida ulmifolia Cav., Mon. Cl. Diss. Dec. 15, t. 2(4). 1785. Sida arguta Sw., Nov. Gen. Sp. P1. Prodr. 101. 1788.
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Description
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Herb or suffrutex, the stem erect or ascending or sprawling, up to 1.2 m long, the branches slender, rather sparsely and finely stellate-puberulus to glabrescent. Leaves slender-petiolate, the petiole up to 4 cm long, flattened and hirsute on the adaxial side, rounded and nearly glabrous on the abaxial side, the stipules linear- subulate, 3-4 mm long, hirsute, persistent; blade broadly ovate, cordate at the base, acuminate at the apex, coarsely crenate-serrate at the margin, up to 3.2 cm long and 2.6 cm wide, thin, nearly concolorous, 5(-7)-palminerved, with both surfaces more or less sparsely strigose-pubescent, and with the venation prominulous. Flow- ers axillary, solitary, the pedicel capillaceous, obscurely articulated above the middle or inarticulated, 1.5-2.5 cm long, up to 4.5 cm long in fruit, finely stellate-puberulus especially above; calyx campanulate, subplicate-5-angulate, ca 5-5.5 mm long, thin, 10-ribbed, puberulus on the veins and ciliate at the margin, very moderately accrescent, the lobes deltoid, from the base long-acuminate, ca 2.5-3 mm long and broad at the base; petals ca 6-7 mm long, yellow. Mericarps 5, trigonous, narrow, ca 4 mm long (awns included), apically 2-aristate, the awns ca 1-1.5 mm long, very minutely antrorsely pilosulose as is the dorsal upper part, thin-walled, dorsally and laterally finely reticulate, dehiscent apically.
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Habit
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Herb suffrutex
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Distribution
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West Indies and Mexico; to! northern South America.
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Specimen
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CANAL ZONE: in Government forest along Las Cruces Trail, alt 75 m, Hunter & Allen 716 (MO).
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Note
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This species is variable and not well understood. It is closely related and perhaps even conspecific with S. veronicaefolia Lam. (S. humilis Cav., S. hederifolia Cav., S. dombeyana DC.), which is widely distributed in the tropics of both hemi- spheres.
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