It is probably Behria tenuiflora, known only from Baja and closely related to Bessera (it may now be included in Bessera). I have grown this bulb for a number of years, but it has never bloomed for me. It seems to grow in response to watering, not particularly to time of year. They looked a little happier this year, maybe because of our warmer summer, but still no blooms. Diana Telos Rare Bulbs