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(Last Modified On 3/8/2013)
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(Last Modified On 3/8/2013)
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Species
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URENA LOBATA L.
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PlaceOfPublication
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Sp. P1. 692. 1753.
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Description
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Suffrutex up to ca 3 m tall, the stem and branchlets sparsely to densely tomen- tose. Leaves with the petiole terete, up to 4 cm long, gradually shorter toward the apex of the stem and branchlets, sparsely to densely tomentose, the stipules ca 2-3 mm long; blade subcircular to ovate to oblong, subentire to angulate to 3-5-pal- matilobed or palmatiparted, cuneate or rounded or cordate at the base, the lobes entire to pinnatisect, with rounded or acute sinuses and acute to obtuse at the apex, the margins often irregularly serrate, up to 12 cm long and broad, discolor, soft to scabridulous, 3- to 9-palminerved, puberulus to tomentose on both surfaces but the indumentum usually denser beneath, the venation reticulate and slightly prominent beneath. Flowers with the pedicel ca 3-5 mm long, tomentose; epicalyx campanu- late, 4-7 mm long, the lobes narrowly ovate, connate in the lower 1/3, acute at the apex, pubescent; calyx usually slightly shorter than the epicalyx, the lobes narrowly ovate and acute, pubescent; petals obliquely obovate, rounded or truncate at the apex, shortly unguiculate, 10-18 mm long, flabellate-veined, puberulus outside, the claw barbate; staminal tube generally sparsely and minutely pilose; style branches exceeding scarcely the staminal tube. Fruit ca 10 mm in diam, the mericarps rounded at the apex, puberulus, dorsally densely glochidiate-echinate; seeds ca 2-3 mm long.
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Note
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Urena lobata, a weed of wet pastures, roadsides and moist thickets, is repre- sented in Panama by two varieties
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Key
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a. Leaf blades generally subentire to angulately lobed ........................................ var. LOBATA aa. Leaf blades deeply 3- to 5-palmatiparted, the sinuses of the segments broad and rounded ....... ............................................... var. SINUATA
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