Mueller's description was based on material collected by Alfred William Howitt, for whom the species is named.
Acacia | Acacia aneura | acacia | Acacia dealbata | Acacia pendula | Acacia melanoxylon | Acacia koa | Acacia acuminata | Acacia truncata | Acacia sophorae | Acacia Ridge, Queensland | Acacia Ridge | Acacia pycnantha | Acacia mearnsii | Acacia longifolia | acacia koa | Umbrella Thorn Acacia—''Acacia tortilis'' | San Acacia, New Mexico | Acacia verticillata | Acacia translucens | Acacia sclerosperma | Acacia saligna | Acacia ramulosa var. linophylla | Acacia quadrimarginea | Acacia pubescens | Acacia Life Insurance Company | Acacia leprosa | Acacia kempeana | Acacia decurrens | Acacia cyclops |