|
(Last Modified On 1/11/2013)
|
|
|
|
(Last Modified On 1/11/2013)
|
|
Subspecific
|
LUDWIGIA PALUSTRIS var. NANA Fernald & Griscom,
|
|
PlaceOfPublication
|
Rhodora 3 7: 176. 1935.
|
|
Synonym
|
Isnardia palustris f8 avmericana DC., Prodr. 3:61. 1828. Ludwigia repens Forst., Cat. P1. N. Am., 22. 1771. Ludwigia apetala Walt., Fl. Car., 89. 1788. Ludwigia nitida Michx., Fl. Bor. Am. 1: 87. 1 8 03. Isnardia nitida Poir. in Lam., Encycl. Suppl. 3:18 8. 1813. Isnardia ascendens Hall in Eaton, Man. N. Am. Bot., ed. 7, 353. 1836. Ludwigia palustris var. inundata Svenson, Torreya 3 5:120. 193 5.
|
|
Description
|
Annual or perennial, glabrous or nearly so, sometimes minutely pubescent along leaf-margins, more or less succulent, the stems mostly floating, or pro- cumbent, 1-5 (-7) dm. long, subsimple to diffusely branched, rooting freely at nodes, angled, green or with some reddish tinge; leaves opposite, the blades lanceolate to narrow-elliptic, or broadly elliptic-ovate, mostly 0.5-1.5 cm. long, entire, shining, with 4-5 principal veins on each side of midrib, acute to acuminate at apex, usually rather gradually narrowed at base into petioles 0.5-2 cm. long; flowers subsessile; ovary usually pale with 4 longitudinal green bands extending to the summit; bracteoles scarcely evident or up to ca. 1 mm. long, on base of ovary; sepals deltoid-ovate, acute, 0.5-1 mm. long; petals apparently none; stamens less than 1 mm. long; style plus stigma less than 1 mm. high; capsule somewhat corky, oblong-obovoid, rounded at base, truncate at apex, 2-3 mm. long, 1.4-2 mm. thick at middle; seeds oblong, straight along inconspicuous raphe, curved on other edge, 0.5-0.8 mm. long, shining brown to almost white.
|
|
Distribution
|
In quiet water or on wet banks. From southeastern United States, West Indies, Mexico, Guatemala, and Colombia. To be expected in Panama.
|
|
Tag
|
|
|
|
Project Name
|
|
Tag
|
|
|
|