Fruits That Start With X

Fruits that start with X form the shortest collection in this entire A to Z series, a reflection of how few plants in the global food system carry names beginning with this letter. But short does not mean uninteresting. The five fruits here span three continents, include one of the world’s most consumed fruits under a name most people do not recognize, and feature a mangrove fruit that almost no one outside coastal West Africa and Southeast Asia has ever tasted.

The United Nations Environment Programme has identified thousands of edible plant species that remain underdocumented and underutilized in global food systems, with many of the most nutritionally valuable fruits concentrated in regions where food science research is still emerging. The journal Economic Botany has published decades of research documenting the nutritional and cultural importance of wild and indigenous fruits that rarely appear in mainstream nutrition databases. The 5 fruits below represent exactly this kind of overlooked nutritional value.

5 Fruits That Begin With X: Complete List with Health Benefits

1. Ximenia: The Wild Sour Plum

Ximenia (Ximenia americana and Ximenia caffra) encompasses a small genus of tropical and subtropical shrubs and small trees found across Africa, the Americas, and parts of Asia. The fruits are small, olive-shaped, and range from yellow to red at full ripeness, with a thin skin, juicy flesh, and a flavor that delivers an intense combination of tart, sweet, and slightly almond-bitter notes from trace amounts of prussic acid in the seed. The flesh is safe to eat freely; only the raw seeds should be avoided in large quantities.

Health benefits: Ximenia fruit is a notable source of vitamin C, with the African species Ximenia caffra particularly well documented for its nutritional contribution to rural communities across southern and eastern Africa. The seed oil is exceptionally rich in very long chain fatty acids, particularly ximenynic acid, a unique fatty acid not found in any other commercially significant plant. Research published in the South African Journal of Botany documented Ximenia caffra’s antioxidant activity, phenolic content, and traditional use across multiple southern African countries for wound healing, skin conditions, and digestive complaints, with laboratory evidence supporting several of these applications.

Best eaten: Fresh off the tree when fully ripe and soft, made into jam and jelly across southern Africa, or fermented into traditional beer in parts of West Africa.

2. Xigua: The Chinese Watermelon

Xigua is the Mandarin Chinese word for watermelon, literally meaning “western melon,” a name that reflects watermelon’s origins in Africa and its arrival in China via trade routes from the west. In English-language botany and food writing, xigua is sometimes used specifically to refer to the traditional Chinese varieties of Citrullus lanatus that differ from North American and European commercial watermelons in having darker green skin, deeper red flesh, and a higher sugar concentration.

Health benefits: Xigua shares the core nutritional profile of watermelon, being rich in lycopene, citrulline, and vitamin C, but traditional Chinese varieties are noted for higher sugar density and deeper flesh pigmentation, suggesting higher lycopene concentrations per gram. Research published in the journal HortScience has examined the phytochemical variation across watermelon cultivars globally, finding that heirloom and traditional varieties including Chinese types often contain significantly higher lycopene and beta-carotene levels than commercial hybrid varieties bred for shelf life and uniformity. Lycopene supports cardiovascular health and provides protection against oxidative stress.

Best eaten: Chilled and sliced, in Chinese summer soups and desserts, blended into juice, or eaten with a light sprinkle of salt as enjoyed across China.

3. Xylocarpus: The Cannonball Mangrove Fruit

Xylocarpus (Xylocarpus granatum and Xylocarpus moluccensis) is a genus of mangrove trees found along tropical coastlines from East Africa through South and Southeast Asia to the Pacific Islands. The fruits are large, round, and woody, resembling cannonballs, and split open when ripe to reveal tightly packed puzzle-like seeds surrounded by a thin layer of fibrous flesh. They are not a mainstream food fruit but have significant traditional food and medicinal use across coastal communities in their range.

Health benefits: Xylocarpus fruit and seeds contain limonoids including xyloccensins and mexicanolides, a class of highly oxygenated triterpenoid compounds that have attracted substantial pharmaceutical research interest. A review published in the journal Marine Drugs documented the remarkable diversity and biological activity of limonoids isolated from Xylocarpus species, finding anti-inflammatory, antimalarial, antifeedant, and cytotoxic activity across multiple compound classes. The fruit flesh provides dietary fiber and tannins with astringent and antimicrobial properties used in traditional coastal medicine across East Africa and Southeast Asia.

Best eaten: The flesh is consumed in small amounts in traditional food preparations across coastal East Africa and island Southeast Asia; the seeds are used medicinally rather than as food.

4. Xoconostle: The Sour Prickly Pear

Xoconostle (Opuntia matudae and related species) is the sour variety of prickly pear cactus fruit, distinct from the sweet tuna fruit covered in the T article. The name comes from the Nahuatl language of the Aztecs and means “sour xocotl fruit.” Unlike sweet prickly pear, xoconostle is not eaten fresh but is a fundamental souring ingredient in Mexican cuisine, particularly in mole de olla and other traditional stews where it adds a complex tartness.

Health benefits: Xoconostle is particularly rich in betalains, the same antioxidant pigments found in beets and sweet prickly pear, alongside pectin fiber and vitamin C. Because it is used in cooking rather than eaten raw, its heat-stable betalain and fiber content remains largely intact through preparation. A study published in the journal Plant Foods for Human Nutrition documented xoconostle’s exceptionally high betalain concentration compared to sweet prickly pear varieties, as well as its significant pectin content and potential for blood sugar modulation through its effect on carbohydrate digestion rate. It also provides magnesium and calcium.

Best eaten: Peeled and added to mole de olla, pozole, and other Mexican stews and soups; used as a souring agent in salsas and sauces; occasionally candied or made into jam.

5. Xarel-lo Grape: The Ancient Catalan Vine Fruit

Xarel-lo (pronounced sha-REL-lo) is an ancient white grape variety native to Catalonia in northeastern Spain, one of the three traditional grape varieties used in making Cava, Spain’s celebrated sparkling wine. The name is believed to derive from a Catalan dialectal term, and the grape has been cultivated in the Penedès wine region for centuries. As a fresh fruit, xarel-lo grapes are round, medium-sized, thick-skinned, and moderately sweet with a distinctive earthy, herbal character.

Health benefits: Xarel-lo grapes provide resveratrol, quercetin, and catechins in their skins, the same class of polyphenols associated with cardiovascular protection across the broader grape family. White grape varieties like xarel-lo contain lower anthocyanin levels than red grapes but retain meaningful flavonoid content, particularly in the skin and seeds. Research published in the Journal of Agricultural and Food Chemistry examined the polyphenolic profile of traditional Catalan grape varieties including xarel-lo, finding significant resveratrol and catechin content in whole berry extracts with measurable antioxidant capacity. The fruit also provides vitamin C, potassium, and vitamin K.

Best eaten: Fresh as a table grape when available from specialty producers, or more commonly encountered as the base of Cava and traditional Catalan white wines.

Summary Comparison Table

The Bottom Line

Fruits that start with X may be the rarest collection in this entire A to Z series, but they reward curiosity generously. From the lycopene-rich xigua enjoyed across China to the betalain-packed xoconostle that has soured Mexican stews since the time of the Aztecs, and from the wild sour plums of African savannas to the ancient vines of Catalonia, these five fruits carry centuries of human food history and genuine nutritional value. They are a reminder that the most interesting fruits are often the ones furthest from the supermarket produce aisle.

Nutritional data sourced from the USDA FoodData Central database and published nutritional analyses. Values are approximate and may vary based on variety, ripeness, and growing conditions.