Thalus or Thallus: How To spell?

The word Thalus is misspelled against Thallus, a noun meaning "A solid mass of cellular tissue, consisting of one or more layers, usually in the form of a flat stratum or expansion, but sometimes erect or pendulous, and elongated and branching, and forming the substance of the thallogens."

Thallus has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings tha & us which should not be misspelled with single 'L'
Wrong Spelling:  tha-l-us 
Correct Spelling:  tha-ll-us 
Check more misspelled words of Thallus to spell it correct.