Try to make your search as simple as possible:
Lightfootia will find all items including that sequence of letters.
Search results for "Lightfootia":
"Lightfootia albens" - Wahlenbergia albens
"Lightfootia serrata" - Xylosma serrata
"Lightfootia Theiformis" - Aphloia theiformis
"Lightfootia theiformis" - Aphloia theiformis