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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 MEXICANA (Schlecht.) Hieron.
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PlaceOfPublication
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Bot. Jahrb. 20: Beibl. 49:8. 1895.
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Synonym
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Brandesia mexicana Schlecht. in Linnaea 7:3 92. 1832. Telanthera microcephala Moq. in DC. Prodr. 132:371. 1849. Telanthera mnexicana Moq. loc. cit. 372. 1849. Alternanthera lehrnannii Hieron. in Bot. Jahrb. 20: Beibl. 49:8. 1895. Achyranthes lehmanjii (Hieron.) Standl. in Jour. Wash. Acad. 5:74. 1915. Achyranthes mexicana (Schlecht.) Standi. loc. cit. 74. 1915.
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Description
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Ascending or erect pilose or glabrate perennials, the scantily branched stems to 1 m. long. Leaves appressed pilose or glabrate, elliptic to ovate, apically attenu- ate, basally acute to cuneate, 2.5-10 cm. long, 1-5 cm. broad; petioles 2-15 mm. long. Inflorescences of axillary and terminal white to stramineous subglobose to cylindric heads, 5-10 mm. long, 4-7 mm. broad; pedurncles mostly unbranched, to 9 cm. long. Flowers perfect, the bracts and bracteoles subequal, ovate, acuminate to aristate, 1-2 mm. long; sepals 5, oblong, obscurely 3--nerved and slightly indurate basally, 2-3.5 mm. long, 1 mm. broad; stamens 5, united below into a tube, the lacerate pseudostaminodia exceeding the filaments; ovary globose to obovoid; style 1, about twice as long as the globose stigma. Fruit an indehiscent obovoid utricle, 1-1.5 mm. long; seeds reddish brown, cochleate-orbiculate, about 1 mm. broad.
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Specimen
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PROVINCE UNKNOWN: Sutatn Hayes 945.
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Distribution
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Inhabiting mesic forests, this species extends from Mexico south locally to Colombia.
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Note
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It is of more than casual interest that Sutton Hayes 945 is A. mexicana, Sutton Hayes 944 is the type of A. panarnensis and Sutton Hayes 941 is the type of A. stenophylla. The flowers of all these specimens are very similar indeed and would suggest that the latter two were mere vegetative variants of A. mnexicana.
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