Crassula is a huge genus, with most of the species native to southern Africa. A lot of them are miniatures, but Crassula perfoliata var. falcata is in the big side, and robust forms can grow to be several feet tall. It is from South Africa, and was long known simply as Crassula falcata, but it is now considered a variety of the variable C. perfoliata. It differs from other forms in its sickle-shaped leaves (falcata means sickle-shaped), and it is sometimes called the Airplane Plant or the Propeller Plant because of this distinctive shape.
I have a small plant of this. Let’s see if it survives
A new species of Mammillaria was described recently: Mammillaria bertholdii. It’s a sensational new miniature species discovered in the Mexican state of Oaxaca. There is no easy answer to how this new species fits into the genus. The location suggests it belongs in the M. napina group, but flowers and seeds suggest it should be in the M. saboae group. However, the M. saboae group isn’t known to extend into Oaxaca. Perhaps this means there are other plants from the M. saboae group which are yet to be discovered! Only time will tell.
There is an article in the latest copy of The Cactus Explorer, available as a free download here.
Pictures are property of Andreas F. Berthold and Thomas Linzen.
Maybe this will be easier to grow than M saboae. Those spines look amazing.