Skip to main content

Citronella grass (Cymbopogon nardus)

Serai wangi or citronella grass (Cymbopogon nardus) is a plant species in Poaceae, perennial, growing in clumps, up to 2 meters tall, has many fibrous roots, very well-known as a spice in Asian cuisine, herbal teas, citronella oil and pharmaceutical ingredients.

C. nardus has large fibrous roots, short rhizomes and radiates scent. Stems erect or tilted, clustered, bulbous, soft, hollow, green to purplish red and whitish hair. The contents of the stem are tubers and are yellowish white or purplish or reddish white.

Dlium Citronella grass (Cymbopogon nardus)


Ribbon-shaped leaves, thin as paper, curved like grass with a length of up to 1 meter and a width of 1-2 cm, getting to the tip more pointed, green, a large linear bone in the middle, rough surface, hair, sharp margins and smell citrus if squeezed.

Flowers in panicles are red, grow at the tip, five petals which metamorphose into two palea units and a lemma, the crown metamorphoses into two lodic glands to open flowers in the morning. Three to six stamens, open lengthwise, a pair of pistil-shaped heads with a crested-shaped extension.

Flower stalks have a height of up to 2 meters, red covered with protective leaves and usually white. The protective leaves metamorphose into sterile and fertile glums. The fruit is grain shaped, red, elongated, flat ventral dorso and half the seed embryo.

Citronella grass grows wild in the tropics and requires a lot of sun at an altitude of 200-1200 m with an ideal 250-600 m, temperatures 23-30C, rainfall 1000-1500 mm/year with a dry season 4-6 months, distribution of rain 10 months and soil pH 6.0-7.5.





Citronella is widely cultivated for essential oils which contain 30-45% citronellal, geraniol 65-90%, citronellol 11-15%, geranil acetate 3-8%, citronelyl acetate 2-4%, citral, cavikol, eugenol, elemol, cadinol , kadinen, vanilin, limonene and kamfen. The main and most important ingredients are citronellal and geraniol.

Serai wangi is used as a flavor generator in food and drinks, sauces, sweets, meat and fat. Use in the perfume industry mostly consists of citral for the production of α and β ionons which are used as scented ingredients in soaps, detergents, creams, lotions and mosquito repellents.

The leaves are used to kill cancer cells, anti-microbial and anti-bacterial, treat infections of the stomach, intestines, bladder tract, heal wounds, carminative, stomacic, post-partum, fever and antispasmodic. The root is used as a phlegm thinner, mouthwash, diaphoretic and body warmer.

Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Liliopsida
Order: Poales
Family: Poaceae
Subfamily: Panicoideae
Tribe: Andropogoneae
Genus: Cymbopogon
Species: Cymbopogon nardus

Popular Posts

Black potato (Coleus rotundifolius)

Black potato ( Coleus rotundifolius ) is a species of plant in Lamiaceae, herbaceous, fibrous roots and tubers, erect and slightly creeping stems, quadrangular, thick, and slightly odorous. Single leaves, thick, membranous, opposite and alternate. Leaves are oval, dark green and shiny on the upper side, bright green on the lower side. Up to 5 cm long, up to 4 cm wide, slightly hairy and pinnate leaf veins. Leaf stalks up to 4 cm long. Small, purple flowers. Star-shaped petals, lip-shaped crown, dark to light purple with a slightly curved tube shape. Flowering from February-August. Small tubers, brown and white flesh and tuber length 2-4 cm. Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Magnoliopsida Order: Lamiales Family: Lamiaceae Subfamily: Nepetoideae Tribe: Ocimeae Subtribe: Plectranthinae Genus: Coleus Species: Coleus rotundifolius

Humpback whales (Megaptera novaeangliae) manufacture bubble-nets as tools to increase prey intake

NEWS - Humpback whales ( Megaptera novaeangliae ) create bubble net tools while foraging, consisting of internal tangential rings, and actively control the number of rings, their size, depth and horizontal spacing between the surrounding bubbles. These structural elements of the net increase prey intake sevenfold. Researchers have known that humpback whales create “bubble nets” for hunting, but the new report shows that the animals also manipulate them in a variety of ways to maximize catches. The behavior places humpbacks among the rare animals that make and use their own tools. “Many animals use tools to help them find food, but very few actually make or modify these tools themselves,” said Lars Bejder, director of the Marine Mammal Research Program (MMRP), University of Hawaii at Manoa. “Humpback whales in southeast Alaska create elaborate bubble nets to catch krill. They skillfully blow bubbles in patterns that form a web with internal rings. They actively control details such ...

Bright white flat-backed millipede (Trichopeltis jiyue) like moon emerging from behind dark rain clouds

NEWS - Bright white flat-backed millipede ( Trichopeltis jiyue sp. nov.) from Ailaoshan National Nature Reserve in Yunnan Province, is the second recorded epigean species of Trichopeltis Pocock 1894 in China. Jiyue (Chinese spelling) refers to the bright white appearance of the animal, like the moon emerging from behind dark rain clouds. Polydesmida is one of the most diverse orders of Diplopoda (millipedes) with about 5000 species in 30 families and is widely distributed worldwide. All Polydesmida are blind, eyeless and metaterga usually show small to prominent lateral paranota or paraterga. Cryptodesmidae Karsch 1880 is a family Polydesmida with about 40 genera and 130 species distributed in the Neotropics (Mexico to Argentina), Afrotropics (continental sub-Saharan Africa) and Asia-Australasia (Central Asia and the Himalayas to Japan and Papua New Guinea). In tropical or subtropical Asia and Australasia, 12 genera and 36 species have been documented in Cryptodesmidae. Trichopeltis P...