lanularia, corrected
heard as lanularia
spelled lunularia
Lunularia. The first vowel is u, from luna.
What the ear did
Writing a at the start of an unstressed syllable is a fair phonetic guess in English and takes the name away from its root. Once the moon is gone from luna, nothing about the crescent cups makes sense.
L-U-N-U-L-A-R-I-A
The full entry for lunularia covers the name itself.