| Hyssop-Leaved Water Primrose |
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| File size | 454527 |
| Original date | 4/24/12 4:28 PM |
| Resolution | 2048 x 1536 |
| Flash | Flash did not fire, auto |
| Focal length | 7.4mm |
| Exposure time | 1/50s |
| Aperture | 3.5 |
| Focus Distance | |
| Metering Mode | Center weighted average |
| Camera make | OLYMPUS IMAGING CORP. |
| Camera model | T10,X27 |
| Sensor type |
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 ative |
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Photo: |
Botanical name: Ludwigia hyssopifolia Family: Onagraceae (Evening primrose family)
Synonyms: Jussiaea hyssopifolia, Ludwigia micrantha
Synonyms: Jussiaea hyssopifolia, Ludwigia micrantha
Hyssop-Leaved Water Primrose is an erect herb or
undershrub, usually growing in marshy places, hairless, branches
narrowly winged, quadrangular. Leaves are alternate, entire, up to
6.5-7.5 cm long, 1.2-3.0 cm wide, ovate-lanceolate, tip pointed, base
narrowed, leaf-stalks up to 5 mm long. Flowers are borne singly in leaf
axils, on stalks with 2 bracteoles. Sepals are 4, lanceshaped, tip
pointed, equaling the petals, persistent, tube narrow, upto 5 mm long.
Petals are 4, yellow, ovate, base and tip narrow, 2-5mm long. Stamens
are usually 8. Ovary is 4-celled, style simple; stigma head-like.
Capsules are up to 2.5 cm long, subterete, enlarged in the upper part.
Seeds are multiseriate in upper half, uniseriate in lower.
Hyssop-Leaved Water Primrose is a weed widespread across many
continents.
Identification credit: Shivaprakash Nedle
| Photographed in Nekkarekadu, Vittal, Karnataka. |