Blossfeldia liliputana, is a solitary or clumping miniature cactus, with no rib and no spines. The smallest of all cacti and one of the most priced by impassioned, but rarely seen on its own roots in cultivation for any length of time. Although several species of Blossfeldia with minimal differences have been described (as many as six), most botanist agree on the fact that all the ones described until now should all be included in the Blossfeldia liliputana.
This remarkable miniature is the most enigmatic of all cacti, confounding us with its physiological, anatomical, morphological, ecological and evolutionary peculiarities. They are apparently the only cacti that are capable of completely drying out and then rehydrating their cells when watered (called "poikilohydric" or popularly "resurrection plants"). It has been found to lose up to 80% of its moisture in one year and then survive drought for an additional year, making it very similar to mosses and lichens in being adapted to withstand near complete loss of moisture! It could be that what looks like a few dried out and dead seedlings could be revived by a thorough soak. Except for certain parasites and aquatics, this species possesses the lowest density of stomata of any terrestrial flowering plant.