I've always thought this looks like a stretched out clarinervium but it's far more
tender. It doesn't do well when drying out and needs higher humidity. Although
it has survived torture, it shows the wear and tear for months after. Mealy bugs
seem to love it. I vow to bring it in this winter before it deteriorates from the
I obtained this as a 1 inch high offset from a Long Island greenhouse back in 1980.
For 18 years, I've called it a clarinervium. Recently an email message
pointed out that it's a crystallinum and not a clarinervium. Looking in the Exotica,
I see that that's obviously correct and that I've misidentified the plant.