Jim Shields asked: "What is the gender of Leptochiton? I assume it is neuter, but I don't really know. The ending -on in Greek usually equates to the neuter ending -um in Latin, but is that always true?" No, that is not always true, and that inconsistency has the source of much confusion. Mecon (often used in poppy names such as Stylomecon, Hylomecon, both of these are feminine) and Codon (as in Platycodon, which is masculine but the popular literature and emails are full of Platycodon grandiflorum and so on) are other examples. Chiton is masculine, and in botanical Latin is treated as a third declension noun: thus, Leptochiton helianthus. If you are a stickler for pronunciation, note that the I in chiton is short. Thus, in a word such as Leptochiton, the accent falls on the third syllable from the end (the antepenult), which in this case also happens to have a short vowel: le - PTO - chi - ton. Jim McKenney