There are 8 words that start with 'chla'.
| chlamys | chlamydes | 
| chlamydia | chlamyses | 
| chlamydiae | chlamydial | 
| chlamydospore | chlamydospores | 
Note: These 8 words that start with 'chla' are found from the USA & Canada version of the tournament Scrabble word list.