What Is Coffee? - National Coffee Association (#)

  „Coffee traces its biological heritage to a genus of plants known as Coffea.  Within the genus there are over 500 genera and 6,000 species of tropical trees and shrubs.  The genus was first described in the 18th century by the Swedish botanist, Carolus Linneaus, who also described Coffea arabica in his Species Plantarum in 1753.  Botanists have disagreed ever since on the exact classification.  This is understandable considering that coffee plants can range from small shrubs to tall trees, with leaves from 1 to 40 centimeters in size, and from purple or yellow, to the predominant dark green, in color. It has been estimated that there are anywhere from 25 to 100 species of coffee plants.“

http://www.ncausa.org/public/pages/ index.cfm?pageid=67 - Cached

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Some slightly related:

Agriculture: Plant, Harvesting, Processing, Fertilization, and Diseases.

  „Coffee plants belong to the botanical genus Coffea in the family Rubiaceae, which has 500 genera and over 6,000 species.  Although there is some disagreement, the number of species belonging to Coffea ranges from 25 to 100.  Most commercial green coffee is either the C. arabica or C. canephora species, which is referred to commercially as Arabica and Robusta, respectively.  Coffea arabica is an allotetraploid inbreeder (2n = 44).  Forty to fifty cultivars (infraspecific taxa) are known, and are suspected to be derived from two cultivars of C.“

http://www.coffeeresearch.org/agriculture/ main.htm - Cached

BSCA - BSCA Certified Roasted Coffees

  „The assertion 100% Arabica, rare in Brazilian coffee packages, guarantees that the beans used are picked from trees of the Rubiaceae family, genus Coffea, species Coffea arabica, known over centuries for producing an aromatic beverage, with intense flavor, naturally sweet and slightly acid.“

http://www.bsca.com.br/certified.php?lang=en - Cached

Brazilian Scientists Decode the Coffee Genome - National Coffee Association

  „Thirty-five thousand. That’s the number of genes found in the pea-sized seed of plants of the Coffea genus – in other words, the coffee bean. In groundbreaking work, Brazilian scientists have unlocked the key to the genetic makeup of coffee, with a complete DNA map of the coffee genome.“

http://www.ncausa.org/public/pages/ headlinedetails.cfm?id=266&returnto=1 - Cached

It's All About Coffee

  „It is a generic term related to the fruit and seeds from the plants of the Coffea genus, as well as the products derived from those fruits and seeds in different processing and/or consuming stages.“

http://www.aboutcoffee.net/2003/02/ coffee-and-processes-in-producing.html - Cached

Tea & Coffee 01/03 - A Place for Robustas in the World of Gourmet Coffees

  „While most Robustas find themselves in dire straits, their trouble is not caused by the robusta variety per se. Coffea Canephora which is the scientific name of the robusta plant, is in no way “worse” than Coffea Arabica. The latter has just fared better in policies, processing, selection and especially marketing. Gourmet Robustas are already produced, although still almost confidentially, and they prove to be excellent, with appearance and cup qualities different from those of Arabicas, but equally appealing.“

http://www.teaandcoffee.net/0103/special.htm - Cached

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