Types and Varieties of Coffee Explained

When you're scanning a coffee menu or shopping for beans online, you often see terms like 'Arabica,' 'Robusta,' or even more specific ones like 'Bourbon' or 'Typica.' But what do these actually mean? If you've ever wondered why some coffees taste bright and acidic while others are bold and bitter—or why certain beans grow better at high altitudes—you're asking about the species and varieties behind your cup.

There are four major cultivated coffee species globally: Arabica, Robusta, Liberica, and Excelsa—with over 60 known species in the Coffea genus. Of these, Arabica accounts for over 80% of global production, while Robusta makes up most of the rest. The other two are far less common.

What Are the Main Coffee Species?

Coffee belongs to the Rubiaceae family and the Coffea genus. Most commercial coffee comes from just two species: Arabica (Coffea arabica) and Robusta (Coffea canephora, also called C. robusta). A third, Liberica (C. liberica), and a fourth, Excelsa (a variety of Liberica), are grown in limited regions. Arabica is the most widely cultivated and consumed, making up over 80% of the world’s coffee.

Arabica (Coffea arabica)

Arabica coffee originated in the highlands of Ethiopia and Sudan, typically grown between 1,000–2,000 meters above sea level. Today it is cultivated worldwide between latitudes 28°N and 38°S, mostly at elevations of 1,300–1,900 meters. Major producers include Brazil, Colombia, and various countries in East and West Africa. In China, it is grown in Yunnan, Guangxi, Fujian, western Guangdong, and Hainan, with Yunnan and most other regions focusing on Arabica.

Arabica plants are relatively small (4–5 meters tall), with narrow, oval, tough leaves and a distinctive wavy leaf edge. They flower and fruit on the same stem node, typically yielding 12–20 cherries per node. Arabica cherries have a fresh-to-dry bean ratio of around 4.5–5:1. The beans are smaller, denser, and have a smoother, more complex flavor profile when well processed. Arabica is more sensitive to pests like coffee leaf rust and coffee berry borer but has a longer lifespan—up to 100 years, though economically viable for only about 25.

Robusta (Coffea canephora / C. robusta)

Robusta originates from the lowland rainforests of central and western Africa and is grown at altitudes below 900 meters, generally between 10°N and 10°S latitude. It thrives in hotter, more humid conditions and is more resistant to diseases—especially coffee leaf rust—making it a workhorse crop, especially in Vietnam, India, and parts of Africa. In China, it is primarily grown in Hainan.

Robusta plants are taller (5–8 meters), with larger, softer leaves and a higher number of fruits per node (25–30). The cherries are rounder, and both the pulp and parchment are thinner than in Arabica. The fresh-to-dry bean ratio is about 3.5–5.1:1. Robusta beans are more bitter, have higher caffeine content, and produce a stronger, more intense cup. They are less popular for specialty coffee but valued for their strength and ease of cultivation.

Liberica (C. liberica)

Liberica is a rare species originating in West Africa. It grows well at low altitudes and is cultivated in small amounts in Malaysia, Indonesia, and Liberia. The trees are massive—over 10 meters tall—with large, tough leaves and sparse fruiting (3–6 cherries per branch). The cherries are large and oblong, maturing to a deep red. The beans are thick-shelled, with a fresh-to-dry ratio of 7–10:1. Liberica coffee has a unique, strong, and often bitter taste that is generally considered inferior for specialty use, but it is sometimes blended to add body.

Excelsa (C. excelsa / C. liberica var. dewevrei)

Excelsa, now often classified under Liberica, is a tall tree growing in lowland areas. It was discovered in the Chari River region of Africa in 1905. The coffee has a distinctive flavor but is rarely seen in specialty markets.

Key Cultivated Varieties of Arabica

Within Arabica, there are numerous cultivated varieties and cultivars, many resulting from natural mutations or hybridization. These varieties are chosen for yield, disease resistance, flavor profile, and climate adaptability. Here are the most significant:

Typica

The original Arabica variety from Ethiopia and Sudan. Typica plants are tall with bronze-tipped young leaves, narrow leaves, and good cup quality. However, they are vulnerable to coffee leaf rust and have low disease resistance.

Bourbon

Originating in Burundi, Bourbon is one of the most important Arabica varieties after Typica. It has a compact growth habit, produces high yields, and matures later. Its cherries are small and suited to high-altitude environments. It performs exceptionally well in Brazil and has largely replaced Typica in many regions.

Caturra

A natural mutation of Bourbon, Caturra was discovered in Brazil. It is a shorter plant (1.2m) that doesn’t require shade, yields well, but demands rich soil and careful pruning. However, it has poor disease resistance.

Mundo Novo

A natural cross between Bourbon and Typica, Mundo Novo was selected in Brazil for high yield. It produces more fruit than either parent but sometimes has issues with fruit fill.

Kent

Discovered in India in 1911, Kent is resistant to rust and pests, making it valuable in Indian coffee farming.

S288, SLN9, K7, Hibrido de Timor (HT), SL28, SL34, Catuai, Ruiru 11

These are either hybrids or selected cultivars with specific resistances or adaptations: S288 offers rust resistance; SLN9 combines drought tolerance and rust resistance; K7 is resistant to coffee berry disease; Hibrido de Timor is a natural Arabica-Robusta hybrid with strong disease resistance; SL28 and SL34 are Kenyan classics known for high cup quality (but not rust resistance); Catuai is a dwarf high-yield variety; Ruiru 11 is a Kenyan-bred F1 hybrid designed for disease resistance and wide adaptability.

Robusta Cultivars

Major Robusta cultivars include Quillon, Uganda, and several clonal selections (numbers 107, 126, 182, 197, 461, 477, 503, 505, 149, 400), with 149 and 400 showing improved drought tolerance.

Why Does Coffee Variety Matter?

The coffee variety affects everything from the plant’s growth habits and disease resistance to the flavor, aroma, and body of the brewed cup. Certain varieties like Geisha, Bourbon, and Typica are favored in specialty coffee for their complex cup profiles, while others like Caturra, Catuai, and Ruiru 11 are chosen for yield and ease of farming. Understanding these differences helps farmers select the right plant for their conditions and helps drinkers appreciate why one coffee tastes different from another.

Frequently Asked Questions

What is the most common coffee species in the world?

Arabica (Coffea arabica) is the most commonly grown and consumed coffee species, accounting for over 80% of global coffee production by both area and yield.

What’s the difference between Arabica and Robusta coffee?

Arabica is grown at higher altitudes, has a smoother, more acidic, and complex flavor, but is more susceptible to pests. Robusta grows at lower altitudes, is more bitter and robust, has twice the caffeine, and resists diseases like coffee leaf rust much better.

What are the major varieties of Arabica coffee?

Major Arabica varieties include Typica, Bourbon, Caturra, Mundo Novo, Kent, SL28, SL34, SLN9, Ruiru 11, and Catuai. Each has been selected for traits such as yield, disease resistance, climate suitability, and flavor quality.

Is Liberica coffee used in specialty coffee?

Liberica is very rarely used in specialty coffee due to its unique, often harsh flavor and low cup quality. It is mostly grown in small quantities in Southeast Asia and Africa.

Why do some coffee varieties resist rust and others don’t?

Disease resistance, including to coffee leaf rust, depends on the plant's genetics. Varieties like SL28 and SL34 have little resistance, while others like Ruiru 11 and certain Robusta clones have been specifically bred or naturally selected for resistance.

What does 'cultivar' mean in coffee?

A cultivar is a cultivated variety of coffee that has been selectively bred or naturally hybridized to enhance certain traits such as yield, flavor, climate adaptation, or pest resistance.

Recommended FrontStreet Beans for Coffee Variety Exploration

Explore key coffee varieties through these FrontStreet offerings: the Brazil Queen Manor Red Bourbon offers sweet, nutty depth with a balanced medium roast—great for appreciating Typica-related profiles. The Colombia Huila Sidra shows off fruity complexity with double anaerobic processing, highlighting what modern Arabica hybrids can achieve. For a classic Kenyan experience, try the Kenya Little Tomato, showcasing the iconic SL28 and SL34 varieties with vibrant berry acidity. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.