Why this fragrant grass is named after a boat and a beard

Nature · Published 30 September 2026 Swipe more like this →

In short: The genus Cymbopogon, commonly known as lemongrass, derives its name from the Greek words for boat and beard. This botanical quirk describes the plant's unique anatomy, where hairy spikelets emerge from boat-shaped spathes. Beyond its distinct appearance, this versatile grass serves as a culinary staple, insect repellent, and spiritual tool.

Cymbopogon is a diverse genus of 52 species native to tropical regions across Asia, Africa, Australia, and various islands. While the name reflects the structural arrangement of its spikelets, the plants are most recognized for their potent, lemon-like scent. This aroma is central to their utility, whether in the kitchen, the medicine cabinet, or the garden. For instance, Cymbopogon citratus is widely favored for culinary applications, while species like Cymbopogon nardus and Cymbopogon winterianus are cultivated primarily for the production of citronella oil.

The chemical composition of these grasses makes them remarkably functional. Citronella oil, rich in geraniol and citronellol, acts as an effective antiseptic and insect repellent, finding its way into soaps, disinfectants, and candles. In the world of beekeeping, lemongrass oil is particularly fascinating because it mimics the pheromone released by a honeybee's Nasonov gland, allowing beekeepers to attract swarms to a hive. The United States Food and Drug Administration has declared lemongrass essential oil as generally recognized as safe for food consumption.

Beyond its industrial and culinary uses, Cymbopogon holds a significant place in cultural and traditional practices. In Brazilian folk medicine, it has been used as a tea to treat anxiety, though human studies have failed to confirm this effect, and it has been linked to cases of contact dermatitis. In Samoa and Tonga, the leaves are used as a remedy for oral infections. Furthermore, in the tradition of Hoodoo, lemongrass serves as the core ingredient in van van oil, a preparation believed to provide spiritual protection, cleanse homes, and attract good fortune in love. While many species were once grouped under this genus, modern taxonomy has reclassified several into other groups, including Andropogon and Hyparrhenia.

The distinction between species is vital for those seeking specific benefits. East Indian lemongrass, or Cymbopogon flexuosus, is native to countries including India, Sri Lanka, and Thailand, whereas West Indian lemongrass, Cymbopogon citratus, originates from maritime Southeast Asia. Although they are often used interchangeably, culinary experts typically prefer C. citratus for its superior flavor profile.

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