VARIETIES · 10 MIN READ
Bourbon, Typica, Gesha — A Coffee Family Tree You Can Taste
One species, hundreds of personalities. Meet the Arabica family.
If species is the language coffee is speaking, variety is the accent. Almost everything in your specialty bag is the same species — Arabica — but inside that one species there are hundreds of named varieties, each with its own backstory, its own pet flavors, and its own opinions about altitude and weather. Some are old enough to have crossed an ocean on a Dutch ship. Some were born in a Costa Rican greenhouse last decade. Let me introduce a few of the ones you'll actually see on a bag.
Typica and Bourbon — the two great-grandmothers
Almost every Arabica variety on Earth descends from two ancient cultivars: Typica and Bourbon. They are the family's matriarchs, and you can think of every other name you'll read on a bag — Caturra, Catuai, SL28, Pacamara, Mundo Novo — as a great-grandchild of one of them, often with a side of marriage into another line.
Typica is the older of the two. It traveled out of Yemen in the 1600s, got onto a Dutch ship, made stopovers in Java and Amsterdam, ended up in a French royal greenhouse, and eventually arrived in Martinique with a single seedling that probably mothered most of the Arabica in the Americas. The cup: clean, sweet, balanced, often a little understated. Typica is the friend you bring home to your parents.
Bourbon — pronounced like the French island, bur-bone, not the whiskey — is a natural mutation of Typica that appeared on Réunion (then called Île Bourbon) in the 1700s. It tends to be sweeter, juicier, with a fuller body. Bourbon is the friend you bring out dancing.
Bourbon and Typica are still actively grown — especially in El Salvador, Rwanda, Burundi, and parts of Kenya — but most farms now grow some hybrid descendant of them. Why? Because the great-grandmas are fragile. They yield modestly. They get sick. Modern breeding tries to keep their flavors and patch the weak spots.
Caturra, Catuai, Mundo Novo — the working family
In the 1930s, a Brazilian farmer found a Bourbon tree that was unusually short. He propagated it. That mutation became Caturra: smaller plant, more cherries per hectare, still mostly Bourbon in the cup — bright, citrusy, sweet. From there, breeders kept going. Mundo Novo is a natural Typica × Bourbon cross that's the backbone of Brazilian production. Catuai is Mundo Novo × Caturra, bred for yield and hardiness. These three together probably account for the majority of coffee planted in Latin America. They aren't the rock stars on the menu, but they're the rhythm section keeping the whole album together.
SL28 and SL34 — Kenya's loud, fruity twins
In the 1930s, Scott Laboratories outside Nairobi sat with a few thousand seedlings and chose two for Kenyan farmers. They labeled them SL28 and SL34, and nobody bothered to give them prettier names. SL28 in particular went on to become one of the great cup-quality varieties of all time: dense, sugary, with a famous blackcurrant-and-grapefruit profile that you can recognize halfway across a café.
Drinking a good Kenyan SL28 for the first time is one of the classic specialty coffee moments. People put the cup down and just sit there for a second.
SL28 doesn't travel well outside its happy zone (high-altitude volcanic soil), but you'll find it in a few Colombian and Honduran farms run by people who want that flavor badly enough to babysit the plants.
Gesha (or Geisha) — the famous one
Gesha deserves its own paragraph because it rearranged the entire specialty industry. It was collected in Ethiopia in the 1930s, shipped around, and largely ignored. In 2004, a family farm in Panama called Hacienda La Esmeralda entered some into a coffee competition. The cup was so floral, so jasmine-and- bergamot perfumed, so unlike anything anybody had tasted, that judges thought there'd been a mistake. It won. It then won again. And again.
Within five years, the world price of green Gesha had gone from "expensive" to "absurd." A natural-process Esmeralda Gesha lot sold at auction in 2023 for over $10,000 per pound of green coffee. Roasters charge $40, $80, sometimes $200 for a small bag. It is the closest coffee gets to fine wine territory.
Two things to know. First, the cup is real — when Gesha is grown at altitude on the right soil and handled with care, it tastes like nothing else. Jasmine. Bergamot. Peach. Honey. A clean, almost tea-like body. Second, "Gesha" alone on a bag doesn't guarantee that. Plenty of mediocre Gesha exists. The variety is a starting condition; the farm and the processing do the rest.
Pacamara, Maragogype, Pacas — the giants and the oddballs
Once you've drunk a few hundred coffees, you start noticing the weirdos. Maragogype ("Maragojipe") is a natural mutation of Typica with enormous beans, sometimes called the "elephant bean." Pacas is a Salvadoran short-stature mutation of Bourbon. Cross them and you get Pacamara: giant beans, complex sweetness, often a heavy chocolate body with bright tropical fruit notes laid on top. Pacamara from El Salvador is a quietly reliable bet.
Castillo, Catimor and the hybrids — the future, probably
Here's where it gets a little political. As coffee leaf rust has ravaged the Americas, breeders have crossed Arabica with the tougher Robusta to create disease-resistant hybrids: Catimor, Castillo, Sarchimor, Ruiru 11. Older specialty drinkers will tell you these hybrids cup duller — flatter, less sweet, with a faint vegetal note in the finish. They aren't always wrong. But newer F1 hybrids like Centroamericano and the Starmaya line have started winning Cup of Excellence awards, which suggests that the next decade of great coffee may well come from plants that didn't exist in 2010.
The truth, if you sit with it long enough: every variety is a compromise between flavor, yield, disease resistance, climate, and altitude. The farmer is the one making the trade-off, and she's the one taking the risk. The variety on the bag is a clue to her bet.
What to do with this at the café
You don't need to memorize every name. But next time you're picking a bag, try this:
- Bourbon, Caturra, or SL28 from East Africa or Central America → expect bright, fruity, juicy.
- Typica or Mundo Novo → expect clean, sweet, easy-drinking.
- Gesha → expect floral, tea-like, expensive, probably worth it once.
- Pacamara → expect a big-bodied, complex cup.
- Catimor / Castillo → expect honest, drinkable, less acidic; some hybrids surprise you.
The variety is a hint, not a verdict. A great processor and a careful roaster can turn a humble Catuai into a top-three cup of your year, and a careless harvest can flatten the most expensive Gesha. The bag is a recipe. The story is in the details.
Take a sip. What do you taste?
References
- World Coffee Research. "Arabica Coffee Varieties Catalog." varieties.worldcoffeeresearch.org
- Anthony, F. et al. "The origin of cultivated Coffea arabica L. varieties revealed by AFLP and SSR markers." Theoretical and Applied Genetics, 2002; 104(5): 894–900.
- "Hacienda La Esmeralda — The Geisha Story." Specialty Coffee Association. sca.coffee
- "Best of Panama Auction Results, 2023." Specialty Coffee Association of Panama. bestofpanama.org
- Hoffmann, James. The World Atlas of Coffee, 2nd ed. Mitchell Beazley, 2018, p. 23–35.
- Bertrand, B. et al. "The greater phenotypic homeostasis of the F1 hybrid coffee is correlated to lower levels of plasticity." Plant Science, 2015; 240: 158–169.