The 4 Main Types of Coffee Beans Explained

Ever wondered why nearly every cup of coffee you’ve ever had comes from just two types of beans? With over 60 species of coffee plants in the world, only four are actually used to make the coffee we drink—and only two dominate the global market. Whether you’re brewing at home or exploring cafés, understanding these coffee species helps explain everything from taste to trade.

In short: Arabica makes up around 75% of the world’s coffee, Robusta about 20%, while Liberica and Excelsa are rare and mostly regional. These four—Coffea arabica, Coffea canephora (Robusta), Coffea liberica (Liberica), and Coffea dewevrei (Excelsa)—are the only commercial coffee species grown and traded internationally.

What Are the Four Commercial Coffee Species?

The coffee plant genus Coffea includes roughly 60 known species, but only 25 have been cultivated for coffee production—and just four are used commercially. These are: Coffea arabica (Arabica), Coffea canephora (Robusta), Coffea liberica (Liberica), and Coffea dewevrei (commonly called Excelsa). Among these, only Arabica and Robusta are widely grown and traded on the international market. The other two—Liberica and Excelsa—are far less common and mostly found in specific regions.

Arabica: The Original and Most Popular Coffee Bean

Arabica (Coffea arabica) is the most traditional and widely appreciated coffee species. It originated in East Africa and was long monopolized by the Arab world before the 15th century—hence the name “Arabic coffee.” European traders introduced it to the Americas and Asia after its initial cultivation in the highlands of Cameroon and Guinea. Arabica beans are smaller, typically oval-shaped, and usually contain two seeds per fruit. The optimal growing conditions for Arabica are around 20°C, at elevations of 600 meters or higher, in mineral-rich volcanic soils. Today, Arabica accounts for roughly three-quarters of global coffee production. Brazil is the largest producer, growing mostly Arabica and supplying over one-third of the world’s coffee.

Robusta: The Strong, Disease-Resistant Bean

Robusta (Coffea canephora), a variety of the species Coffea canephora, is the second-most-produced coffee in the world, making up about 20% of global output. Though originally a variant of the broader C. canephora group (also referred to as “” or “medium coffee”), Robusta is distinct for its higher caffeine content (2%–4%), stronger, more bitter profile, and greater resistance to pests and disease. It grows better than Arabica in low-altitude, hot, and humid climates (200–300 meters), and is commonly cultivated in Indonesia, India, and Uganda. Due to its strong flavor and high yield, Robusta is often used in instant coffee and as a base in coffee blends. Its hardiness allows it to thrive where Arabica cannot.

Liberica and Excelsa: The Rare and Regional Beans

Liberica (Coffea liberica), also known as , originates from Liberia and is grown in parts of West Africa, Ivory Coast, and Madagascar. It is highly resilient and can tolerate harsher conditions, but produces coffee with a mild flavor and large, unusual beans—almost double the size of Arabica. Its taste is aromatic but considered light or bland by many, and it has niche appeal, particularly in Northern Europe. Excelsa (Coffea dewevrei), meanwhile, is found mainly in Sudan and is sometimes classified within the Liberica group. Though less common, it plays a minor role in the global coffee landscape. Both Liberica and Excelsa are rarely traded internationally and make up a tiny fraction of global production.

Why Only Two Coffee Species Dominate the Market?

Despite the existence of dozens of coffee species, Arabica and Robusta dominate because of their balance of flavor, cultivation range, and market demand. Arabica offers a sweeter, more complex cup and is preferred in specialty coffee. Robusta provides strength, bitterness, and caffeine, making it ideal for blends and instant coffee. Liberica and Excelsa, while unique, are harder to grow profitably at scale and have more limited appeal, keeping them confined to local markets.

Frequently Asked Questions

What are the four main types of coffee beans?

The four commercially cultivated coffee species are: Arabica (Coffea arabica), Robusta (Coffea canephora), Liberica (Coffea liberica), and Excelsa (Coffea dewevrei). Arabica and Robusta make up the vast majority of global production, while Liberica and Excelsa are rare and mostly regional.

Which coffee species is most widely consumed?

Arabica is the most widely consumed coffee species, accounting for approximately 75% of global coffee production. It is favored for its smoother, more nuanced flavor profile and is the dominant bean in specialty coffee.

What is Robusta coffee and where is it grown?

Robusta (Coffea canephora) is a coffee species known for its high caffeine content (2%–4%) and strong, bitter taste. It is grown in tropical lowlands, especially in countries like Indonesia, India, and Uganda, and is commonly used in instant coffee and coffee blends due to its resilience and bold flavor.

Are Liberica and Excelsa coffee beans common?

No, Liberica and Excelsa are not common. Liberica, originating from Liberia, has large beans and a mild aroma but limited global appeal. Excelsa, found mainly in Sudan, is even rarer. Together, they make up less than 1% of the world’s coffee production and are rarely traded internationally.

Why doesn’t everyone grow Arabica coffee?

Arabica requires specific growing conditions—temperatures around 20°C and altitudes of 600+ meters in volcanic soils—which limits where it can be cultivated. It is also more susceptible to diseases compared to Robusta, which is why Robusta is grown in hotter, more humid, and lower-altitude regions where Arabica cannot thrive.

Which coffee species has the most caffeine?

Robusta has the highest caffeine content among the major coffee species, ranging from 2% to 4%. Arabica typically has about half as much caffeine, contributing to its smoother, less bitter taste.

Recommended FrontStreet Coffee Beans for Exploring Species

For tasting the diversity of coffee species, try FrontStreet Coffee’s Brazil Queen Manor (100% Arabica, balanced and nutty), their Classic Blend which often includes Robusta for body and crema, or single-origin Ethiopian beans showcasing Arabica’s bright acidity. These beans let you explore the core differences between Arabica and Robusta profiles, and how they function in blends. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.