Ludwigia octovalvis (Jacq.) Raven

Primary tabs

EOL Text

Diagnostic:

"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."

Licensehttp://creativecommons.org/licenses/by/3.0/
Rights holder/Author"Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi", India Biodiversity Portal
Sourcehttp://indiabiodiversity.org/species/show/263659

NatureServe Conservation Status:

Rounded Global Status Rank: G5 - Secure

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorNatureServe
Sourcehttp://explorer.natureserve.org/servlet/NatureServe?searchName=Ludwigia+octovalvis

Diagnostic:

Habit: Herb

Licensehttp://creativecommons.org/licenses/by/3.0/
Rights holder/Author"G. Renu, Sanjana Julias Thilakar, D. Narasimhan, Centre for Floristic Research, Department of Botany, Madras Christian College, Tambaram", India Biodiversity Portal
Sourcehttp://indiabiodiversity.org/species/show/265026

Population:

Population

There is no information on population trends for this species, however it is described as a "pantropical" weed (Cook 1996), suggesting that it is abundant and potentially invasive.

Population Trend

Unknown
Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthorInternational Union for Conservation of Nature and Natural Resources
Sourcehttp://www.iucnredlist.org/apps/redlist/details/169056

Description:

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.

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorMark Hyde, Bart Wursten, Petra Ballings, Flora of Zimbabwe
Sourcehttp://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=142700

Diagnostic:

Habit: Herb

Licensehttp://creativecommons.org/licenses/by/3.0/
Rights holder/Author"G. Renu, Sanjana Julias Thilakar, D. Narasimhan, Centre for Floristic Research, Department of Botany, Madras Christian College, Tambaram", India Biodiversity Portal
Sourcehttp://indiabiodiversity.org/species/show/263659

Threats:

Major Threats

There are no known significant past, ongoing or future threats to this species.

Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthorInternational Union for Conservation of Nature and Natural Resources
Sourcehttp://www.iucnredlist.org/apps/redlist/details/169056

Miscellaneous Details:

"Notes: Cultivated in fields, common in moist places"

Licensehttp://creativecommons.org/licenses/by/3.0/
Rights holder/Author"G. Renu, Sanjana Julias Thilakar, D. Narasimhan, Centre for Floristic Research, Department of Botany, Madras Christian College, Tambaram", India Biodiversity Portal
Sourcehttp://indiabiodiversity.org/species/show/265026

Synonym:

Oenothera octovalvis Jacquin, Enum. Syst. Pl. 19. 1760; Jussiaea angustifolia Lamarck; J. octonervia Lamarck; J. octonervia f. sessiliflora Micheli; J. octovalvis (Jacquin) Swartz; J. pubescens Linnaeus; J. suffruticosa Linnaeus; J. suffruticosa f. angustifolia (Lamarck) Alston; J. suffruticosa var. subglabra Thwaites ex Trimen; J. suffruticosa f. villosa (Lamarck) Alston; J. villosa Lamarck; Ludwigia octovalvis subsp. sessiliflora (Micheli) P. H. Raven; L. pubescens (Linnaeus) H. Hara.

Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthoreFloras.org Copyright © Missouri Botanical Garden
Sourcehttp://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=242413617

Conservation Actions:

Conservation Actions

There are no conservation measures in place and none needed.

Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthorInternational Union for Conservation of Nature and Natural Resources
Sourcehttp://www.iucnredlist.org/apps/redlist/details/169056
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith