(This plant comes in a 3.5" pot. You will receive a very similar plant to the one in the picture. It may or may not be blooming at the time of your purchase. The plant is shipped in its pot to prevent any damage to the roots).
Euphorbia genoudiana is a small branched shrublet up to 25 cm high, with waxy slender stems heavily armed with waxy bone-colored thorns. In the upper regions of the stem, it produces grass-like leaves, up to 5 cm long and about 4 mm in width, giving the plant a most unusual appearance. It is similar in appearance to an Alluaudia or Didierea. The inflorescence is fairly short, usually bearing two to four flowers (cyathia) with five glossy yellow-orange nectar glands round which are two green cyathophylls tapering away to a curly tip, adding to the weirdness of the plant's appearance.
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz