L. flavescens may refer to:
Laphria flavescens, a bee-like robber fly Larinus flavescens, a true weevil Lasius flavescens, a formicine ant Leptosoma flavescens, an Asian moth Leptospermum flavescens, a shrub native to eastern Australia Leucocoprinus flavescens, a basidiomycete fungus Leymus flavescens, a true grass Lichenostomus flavescens, an Oceanian bird Lineus flavescens, a nemertine worm Liothrips flavescens, a storm fly Lipogramma flavescens, a basslet native to the western Atlantic Ocean Lithophyllum flavescens, a thalloid algae Lithothamnion flavescens, a red algae Litoria flavescens, a frog endemic to Papua New Guinea Litsea flavescens, an evergreen native to North America Lycoris flavescens, a flowering plant