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(Last Modified On 1/11/2013)
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(Last Modified On 1/11/2013)
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Species
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JUSSIAEA LEPTOCARPA Nutt.
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PlaceOfPublication
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Gen. N. Am. 1:279. 1818.
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Synonym
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Ludwigia leptocarpa Hara, Journ. Jap. Bot. 28:292. 1953. Jussiaea pilosa H.B.K., Nov. Gen. et Sp. 6:101. 1823. Jussiaea variabilis var. pilosa 0. Kuntze, Rev. Gen. 1:251. 1891. Jussiaea Schottii Micheli, Flora 57:3 02. 1874. Jussiaea surinamensis Miq., Linnaea 18:370. 1844. Jussiaea pilosa var. robustior J. Donn. Smith, Bot. Gaz. 16:6. 1891. Jussiaea pilosa var. Pterocarpa Hassler, Fedde Repert. 12:274. 1913. Jussiaea pilosa var. glabra Hoehne, Exped. Sci. Roosevelt-Rondon Annexo 2:62. 1914.
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Description
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Annual or perennial herb or shrub, 0.3-2 m. tall, freely branched, bushy, the younger branches angled even almost winged from below the decurrent leaf bases, pilose and minutely puberulent; leaves numerous, lanceolate, acute or obtuse, minutely scabrellous-puberulent, often almost strigose or pilose, especially on the veins of the under surface; main leaves 4-14 cm. long, 0.7-2.8 cm. wide, with 11-20 principal veins on each side of the midrib and with poorly developed sub- marginal vein, subsessile to petioled (to 2 cm. long); flowers solitary in upper axils, rather numerous; pedicels becoming 3-15 mm. long in fruit; bracteoles at upper end of pedicel, adnate to stipules, squamate, ca. 0.5 mm. long; sepals 5-6, lanceolate, acuminate, 5-8 mm. long, inconspicuously 3-nerved; petals whitish to deep yellow, round-obovate, 5-10 mm. long, short-clawed; disc flat, pilose; stamens unequal, glabrous, the episepalous filaments 2.5-4.5 mm. long, the epipetalous 1.5- 2.5 mm.; anthers ca. 1 mm. long; style 2-4 mm. long; stigma capitate, 1-1.5 mm. thick; ovary linear, subterete, 10-16 mm. long, pilose and puberulent; capsule subcylindric, 10-12-nerved, straight or curved, rather abruptly narrowed at base, 18-45 mm. long, 2.5-3 mm. thick, puberulent and pilose; seeds subhorizontal, in 1 series in each locule, flattened-ovoid, yellowish, 1 mm. long, minutely cellular- punctate under magnification, surrounded by the horseshoe-shaped corky endocarp but free in it; raphe one-sixth to one-eighth as wide as the body of the seed.
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Habit
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herb shrub
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Distribution
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Wet places. Southeastern United States and West Indies, Mexico to Peru and Argentina.
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Specimen
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COCLE: near Ant6n, Woodson, Allen d Seibert I708. CANAL ZONE: Barro Colorado Island, Wetmore d Abbe i89, Woodivorth d' Vestal 533, Bailey 6go; Gigante Bay, Dodge 3473; Gamboa, Allen I974.
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