(Last Modified On 10/16/2012)
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(Last Modified On 10/16/2012)
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Genus
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ZEUGITES
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PlaceOfPublication
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Civ. Nat. Hist. Jam. ed. 2. 341, and Index II. 1789
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Synonym
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Senites Adans. Fam. P1. 2:39. 1763. Ineffectively published. Despretzia Kunth, Rev. Gram. 2:485. PI. 157. 1831.
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Description
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Spikelets few- to several-flowered, the lowest floret pistillate, the rest staminate, the rachilla joint between the perfect and staminate florets usually elongate; articulation below the glumes, the spikelets falling entire; glumes subequal, broad, obtuse or truncate, often irregularly toothed or lobed, conspicuously cross-veined; lemma of fertile floret broad, usually obtuse, the staminate florets narrower, acutish or subobtuse.
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Note
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Very slender to rather coarse perennials with broad, flat, usually thin, trans- versely veined petiolate blades and open panicles.
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Key
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a. Culms very slender, decumbent-spreading, not more than 50 cm. long; blades thin, ovate, not more than 3.5 cm. long _ _ I -- . Z. MEXICANA aa. Culms coarse, erect, about 1 m. high; blades relatively thick, lanceo- late, more than 10 cm., usually more than 15 cm., long - ___ _ 2. Z. PANAMENSIS
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Species
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ZEUGITES MEXICANA
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PlaceOfPublication
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Nom. Bot. ed. 2. 2:79 8. 1841.
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Synonym
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Despretzia mexicana Kunth, Rev. Gram. 2:485., pI. I57. 1831. Zeugites colorata Griseb. Fl. Brit. W. Ind. 536. 1864. Senites mexicana Hitchc. Contr. U. S. Nat. Herb. 17:370. 1913.
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Description
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Very slender, decumbent-spreading perennial; culms 15-50 cm. long, wiry, usually rather freely branching, purple, shining,-with a sulcus on one side; sheaths usually much shorter than the internodes, sparsely pilose or glabrous; blades 1.5- 3.5 cm. long, 6-16 mm. wide, ovate, acute, thin, glabrous or very sparsely pilose, the petioles 6-10 mm. long; panicles 6-9 cm. long, the slender more or less flexuous, few-flowered branches ascending or spreading, the lower ones often re- flexed; spikelets 5-6 mm. long; glumes equal, 1.5-2 mm. long, about half as long as the fertile floret; staminate florets 1 or 2, about 3 mm. long.
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Distribution
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Rich woods at medium altitudes, southern Mexico to Bolivia.
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Specimen
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PANAMA: Volcain de Chiriqui, Hitchcock 9I98.
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Project Name
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