The Collaborative International Dictionary
Lobeliaceous
Lobeliaceous \Lo*be`li*a"ceous\, a. (Bot.) Of or pertaining to a natural order of plants of which the genus Lobelia is the type.
Wiktionary
lobeliaceous
a. (context botany dated English) Of or pertaining to the former plant family ''(taxlink Lobeliaceae family noshow=1)'', including the lobelia.
WordNet
lobeliaceous
adj. belonging to the family Lobeliaceae