This native tree is commonly known as late flowering black wattle.
Acacia leiocalyx subsp. herveyensis is described as a "higher dicot" in the Leguminosae (Caesalpinioideae, mimosoid clade) family.
In the Queensland Nature Conservation Act it is classified as Least Concern. Under the Federal Environment Protection Biodiversity Conservation Act it is not classified.
Narrow phyllodes, widest below the middle, long attenuate to the apex which is slightly thickened. Forms mixed stands with subsp. leiocalyx particularly between Bundaberg and Maryborough but stands out because of its narrower phyllodes and the fact that it flowers later (Austrobaileya Vol. 5 No. 2 1999).
It has been recorded in the Wide Bay district in the Queensland Herbarium Census and is listed as occurring in the Fraser Coast region in Queensland Herbarium Wildlife Online.
Reported at 11 Fraser Coast localities: Bidwill, Burrum Heads, Duckinwilla, Great Sandy Strait, Pialba, River Heads, Susan River, Talegalla Weir, Tandora, Urangan, Walligan.
Fraser Coast distribution based on unverified field reports.