You are here
Species
Ludwigia octovalvis (Jacq.) Raven
IUCN
NCBI
EOL Text
Herbs robust, erect, perennial, sometimes woody at base or even shrubby. Stems 25-400 cm tall, well-branched, densely spreading pubescent at least on upper stem, or puberulous or subglabrous. Petiole 1-10 mm; leaf blade linear to subovate, 1-14 × 0.3-4 cm, lateral veins 11-20 per side, submarginal vein prominent, base narrowly or broadly cuneate, apex attenuate. Sepals 4, ovate or lanceolate, 6-15 mm. Petals yellow, broadly obovate, 6-17 × 5-17 mm. Stamens 8; filaments 1-4 mm; anthers 1.2-4 mm; pollen in tetrads. Style 1.5-3.5 mm; stigma subglobose, shallowly 4-lobed. Capsule pale brown with 8 darker ribs, cylindric, terete, 1.7-4.5 cm, 2-8 mm in diam., thinly walled, readily and irregularly loculicidal; pedicel 1-10 mm. Seeds in 2 or more rows per locule, free, brown, 0.6-0.75 mm, raphe inflated and equal in size to seed body, evenly transversely ridged. Fl. and fr. Jan-Dec. 2n = 32, 48*.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=242413617 |
United States
Rounded National Status Rank: N4 - Apparently Secure
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Ludwigia+octovalvis |
"Erect herbs, to 1.5 m high, stem densely villous. Leaves to 7 x 1.5 cm, lanceolate, densely hairy; nerves many, oblique; petiole 5 mm long. Flowers axillary, sessile; calyx lobes 4, 9 x 5 mm, ovate, acuminate, hispid; petals 10 x 7 mm, obovate, glabrous; anthers oblong; ovary hispid; disk 8-lobed, lobes clavate. Capsule 4.5 x 0.4 cm, linear, terete, hispid; seeds 0.6 x 0.6 mm, obliquely orbicular, muriculate, one side transversely rugose."
Rounded Global Status Rank: G5 - Secure
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Ludwigia+octovalvis |
Habit: Herb
Population
Population Trend
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | International Union for Conservation of Nature and Natural Resources |
Source | http://www.iucnredlist.org/apps/redlist/details/169056 |
Robust shrubby perennial herb, up to 3 m, sometimes woody at the base. Leaves variable in shape and size, from subglabrous to densely hairy (depending on the subspecies). Flowers showy but short-lived, yellow. Sepals and petals 4; stamens 8, short. Capsule pale brown with 8 darker ribs. Subsp. sessiliflora is recognized by the long spreading hairs on the upper parts of the plant.
Habit: Herb
Major Threats
There are no known significant past, ongoing or future threats to this species.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | International Union for Conservation of Nature and Natural Resources |
Source | http://www.iucnredlist.org/apps/redlist/details/169056 |
"Notes: Cultivated in fields, common in moist places"