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(Last Modified On 1/28/2013)
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(Last Modified On 1/28/2013)
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Species
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ALTERNANTHERA PANAMENSIS (Standl.) Standl.
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PlaceOfPublication
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Field Mus. Bot. 8:9. 1930.
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Synonym
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Achyranthes panamensis Standl. in Contr. U. S. Nat. Herb. 1.8:89. 1916.
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Description
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Erect or clambering pilose perennials, the stems much branched. Leaves appressed pilose, ovate to elliptic, apically acute to acuminate, basally subacute, 2-5.5 cm. long, 0.5-2 cm. wide; petioles 1-4 mm. long. Inflorescences of terminal and axillary stramineous to purplish globose to cylindric heads, 7-11 mm. long, about 7 mm. broad; peduncles mostly branched, 1-6 cm. long, villous. Flowers perfect; bracts and bracteoles subequal, ovate, acuminate to aristate, 1-2 mm. long; sepals 5, oblong, strongly 3-nerved and indurate below, 2.5-3.5 mm. long; stamens 5, united below into a tube, the lacerate pseudostaminodia exceeding the filaments; ovary obovoid to subglobose; style 1, about as long as the globose stigma. Fruit an indehiscent subglobose utricle; seeds dark reddish brown to black, cochleate-orbiculate, 1 mm. broad.
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Specimen
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PROVINCE UNKNOWN: Sutton Hayes 944.
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Note
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This species, represented solely by the type collection, is perhaps just a casual variant of A. mnexicana (Schlecht.) Hieron. It seems to bear the same relation to A. mexicana that the branched-pedunculate A. gracilis (Mart. & Gal.) Standl. bears to the unbranched-pedunculate A. wiilffiawnsii (Standl.) Standl.
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