Yucca angustissima ssp. kanabensis
yes I still have two different areas of the Yucca angustissima ssp. kanabensis x flaccida and Y. flaccida x angustissima ssp. kanabensis from your seed. (I think flaccida was the other yucca in this hybrid.....it may have been filamentosa).
No blooms yet on these hybrids.
Here's #2108 (flaccida x elata)
we had more rain yesterday.....all the blooms are very turgid....I've never seen the blooms bend so much. We had 10" (25cm) of rain in June.....it's moist here.
Y. cernua is about to open. This bloom seems stronger than the Y. constricta x filamentosa hybrids.