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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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HIBISCUS SORORIUS L. f.
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PlaceOfPublication
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Suppl. P1. Syst. Veg. 311. 1781.-Fig. 2 (F, G).
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Synonym
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Hibiscus sororius f. albiflorus Standley, Contr. Arnold Arb. 5: 101. 1933.
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Description
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Herb or suffrutex up to 2 m high, the stem sparsely to densely scabridulous- puberulus with appressed stellate hairs. Leaves with the petiole terete, 1.5-11 cm long, densely scabridulous-puberulus with appressed stellate hairs, the stipules small, linear below and abrupty dilated at the apex into a more or less deltoid blade, velutinous; blade broadly ovate to suborbicular, rarely more or less angulate, deeply cordate at the base, obtuse at the apex, shallowly crenate at the margin, up to 16 cm long and 13 cm wide, 5- to 9-palminerved, scabridulous on both surfaces, stellate-puberulus above, more or less densely appressed-stellate-puberulus and with the venation slightly prominent beneath. Flowers solitary in the upper leaf axils, long-pedicellate, the pedicel articulated at or above the middle, up to 12 cm long, scabridulous-stellate-tomentellous; epicalyx of 8-10 bractlets, these linear be- low and abruptly dilated at the apex into a broad, more or less reniform blade, 0.7- 1.5 cm long and 0.55-1.2 cm wide (the blade), scabridulous-stellate-tomentellous; calyx lobed to below the middle, 2-3 cm long, accrescent, scabridulous-stellate- tomentellous to -puberulus, the lobes ovate, obtuse to subacute and 5- or 7-nerved; petals obovate, unguiculate, rounded at the apex, (3.5-)5-7.5 cm long, white or pink with a red center, stellate-puberulus near the apex outside; staminal tube 1/2 as long as the corolla, antheriferous throughout; style branches exceeding the staminal tube, the stigmas minutely fimbrillate. Capsule surrounded by and smaller than the accrescent calyx, broadly oblong-ellipsoid, rounded to slightly retuse and mucronulate at the apex, 1.2-2.5 cm long, densely hispid with long, simple hairs; seeds subglobose-reniform, ca 1.5-1.7 mm long, glabrous to very minutely papillate.
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Distribution
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Cuba and Central America to Bolivia and northern Argentina; usually in swamps.
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Specimen
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BOCAS DEL TORO: Changuinola Valley, Dunlap 435 (F). CANAL ZONE: Barro Colorado Island, Aviles 910 (F), L. H. & E. Z. Bailey 257 (F), 388 (F), Banghaim 511 (F., US,) 572 (F., US), Marjorie Brown 89 (F), Frost 117 (F), Kenoyer 437 (US), Shattuck 251 (F), Starry 122 (F), Wetmore & Abbe 24 (F), 25 (F, type of H. sororius f. albiflorus), 100 (F), 187 (F), 188 (F); between Frijoles and Monte Lirio, alt 30 m, Killip 12183 (US); Gigante Bay, Dodge 3475 (US), 3477 (US); Darien Station, Standley 31593 (US). DARIEN: S. loc., Macbride 2693 (F., US). PANAMA: viC of Arenoso, Rio Trinidad, alt 26-50 m, Seibert 634 (MO).
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