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(Last Modified On 5/9/2013)
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(Last Modified On 5/9/2013)
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Species
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Halophila decipiens Ostenf.
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PlaceOfPublication
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Bot. Tidsskr. 24: 260. 1902.
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Synonym
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Halophila baillonis auct. non Aschers. ex Dickie in Hook. f., Jour. Linn. Soc. Bot. 14: 317. 1874. Halophila decipiens var. pubescens den Hartog, Fl. Males. I. 5: 411. 1957.
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Description
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Monoecious herbs, the rhizome thin, fragile, with 1 root at each node, the internodes 1-4.5 cm long, the scales transparent, obovate, keeled, 3-7 mm long, hairy on the outside, incised apically, amplexicaul basally; lateral shoots 1-10 mm long, with only 1 pair of leaves. Leaf-blades oblong-elliptic, obtuse or rounded apically, cuneate basally, the margin finely serrulate, bright green, with short rigid unicellular trichomes on one or both sides, rarely glabrous, 10-25 mm long and 3-6 mm wide, cross-veins 6-9 pairs, ascending, joining the inframarginal veins which run ca. 0.5 mm from the margin, the midrib uniting at the apex with the intramarginal nerves; petioles triquetrous, 3-15 mm long. Inflorescences with the spathe ovate, acuminate, keeled, scarious, transparent, 3-4 mm long, the margin ciliate, the keel covered with fine serrulate teeth, with or without trichomes on the outside, containing 1 staminate and 1 carpellate flower, splitting at the top as the fruit ripens; the spathal leaf enclosing the carpellate flower embracing the other spathal leaf. Staminate flowers with the pedicels 3 mm long, the tepals oblong-elliptic to ovate, obtuse, convex, 1-1.5 mm long, the anthers ca. 1 mm long, after anthesis the complete flower with its pedicel breaks off. Carpellate flowers subsessile, the ovary ovoid, 1 mm long, the hypanthium 1-2 mm long, the styles 3, 2.5 mm long. Fruits broadly ellipsoid, 2.5 mm long and 1.5 mm wide, the beak 1.5-2 mm long, the pericarp scarious, transparent; seeds ca. 30, ovoid, 0.2 mm long.
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Habit
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herbs
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Distribution
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A pantropic sea-grass, widely distributed in the Indian and Pacific oceans; in the Atlantic mainly in the Caribbean and the Gulf of Mexico, also in Brazil.
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Specimen
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SAN BLAS: Caledonia Harbor, Mt. Vernon, Elmore L 30 (AHFH).
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Tag
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