Skip to main content

Dragon primrose (Ludwigia adscendens)

Water primrose or water-dragon or dragon primrose (Ludwigia adscendens) is a plant species in the Onagraceae, a floating herbaceous perennial with a spongy and white float, large and cylindrical stems, growing floating on the surface of the water and crawling over the surface of wet soil.

L. adscendens has simple leaves with elliptical blades, thick, 0.4-7 cm long, 0.7-3 cm wide, apex sharp or rounded, margins even, dark green and shiny, a main vein in the center with many small pinnate vein. Petiole short 0.5-1.0 cm.

Dlium Dlium Dragon primrose (Ludwigia adscendens)


Disc-shaped flowers, white or cream with a yellow center, appear singly in the leaf axils, each having 5 sepals, 5 petals and 10 stamens. Flowers have long stalks and white hair.

This species grows to float on calm, clear fresh water and permanently wet land with plenty of sunlight in rivers, canals, canals, farmland, roadsides and other inundated places.





Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Magnoliopsida
Order: Myrtales
Family: Onagraceae
Genus: Ludwigia
Species: Ludwigia adscendens
Subspecies: Ludwigia adscendens ssp. adscendens, Ludwigia adscendens ssp. diffusa

Popular Posts

Blue pea (Clitoria ternatea)

Blue pea ( Clitoria ternatea ) is a species of plant in the Fabaceae family. It is a climbing herb with compound leaves, 5-7 leaflets, up to 12 cm long. The leaflets are oval to round, up to 4 cm long and 3 cm wide, and green. The flowers are blue and white, up to 5 cm long and 3.5 cm wide. The pods are up to 11 cm long and 1 cm wide. TAXON Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Magnoliopsida Order: Fabales Family: Fabaceae Subfamily: Faboideae Tribe: Phaseoleae Subtribe: Clitoriinae Genus: Clitoria L. in Sp. Pl.: 753 (1753) Species: Clitoria ternatea L. in Sp. Pl.: 753 (1753) HOMOTYPIC SYNONYMS Clitoria spectabilis Salisb. in Prodr. Stirp. Chap. Allerton: 336 (1796) Nauchea ternatea (L.) J.-T.Descourt. in Mém. Soc. Linn. Paris 4: 8 (1826) Ternatea ternatea (L.) Kuntze in Revis. Gen. Pl. 3(2): 72 (1898) Ternatea vulgaris Kunth in F.W.H.von Humboldt, A.J.A.Bonpland & C.S.Kunth, Nov. Gen. Sp. 6: 415 (1824) HETEROTYPIC SYNONYMS Clitoria albiflora Matte...

A deep-sea isopod Bathyopsurus nybelini adapted to feed submerged Sargassum algae

NEWS - Incredible footage shows a marine species, Bathyopsurus nybelini , feeding on something that sinks from the ocean’s surface. Researchers using the submersible Alvin found the isopod swimming 3.7 miles down using its paddle-like legs to catch an unexpected food source: Sargassum. Researchers from Woods Hole Oceanographic Institution (WHOI), the University of Montana, SUNY Geneseo, Willamette University and the University of Rhode Island found the algae sinking, while the isopod waited and adapted specifically to find and feed on the sinking nutrient source. The Sargassum lives on the surface for photosynthesis. The discovery of a deep-sea animal that relies on food that sinks from the waters miles above underscores the close relationship between the surface and the deep. “It’s fascinating to see this beautiful animal actively interacting with sargassum, so deep in the ocean. This isopod is extremely rare; only a handful of specimens were collected during the groundbreaking Swedis...

Dadmari (Ammannia baccifera)

Dadmari ( Ammannia baccifera ) is a species of plant in the Lythraceae, an erect, branched herb, up to 50 cm tall, with slightly angular stems and narrow, oblong leaves about 3.5 cm long. The flowers are about 1.2 mm long, greenish or purplish, and grow in dense axillary clusters. TAXON Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Magnoliopsida Order: Myrtales Family: Lythraceae Genus: Ammannia L. in Sp. Pl.: 119 (1753) Species: Ammannia baccifera L. in Sp. Pl.: 120 (1753) HOMOTYPIC SYNONYMS Ammannia baccifera f. genuina Koehne in Bot. Jahrb. Syst. 1: 260 (1880) Ammannia baccifera f. typica Koehne (1880) HETEROTYPIC SYNONYMS Celosia bicolor Blanco in Fl. Filip.: 191 (1837) Celosia nana Blanco (1837) Ammannia apiculata Koehne (1880) Ammannia attenuata Hochst. ex A.Rich. in Tent. Fl. Abyss. 1: 278 (1848) Ammannia attenuata var. latifolia Koehne (1880) Ammannia attenuata var. micromerioides Chiov. in Bull. Soc. Bot. Ital. 1917: 27 (1917) Ammannia attenuata f. pe...