The fruitbody is often a simple club-like stalk, but may be flattened in cross-section or distorted and may show some forking. It can grow up to 10 centimetres tall and is reddish orange to bright red.
The fruitbodies grow on soil and may appear in large groups.
Look-alikes
Clavulinopsis corallinorosacea can be similar in appearance. See the comments about it at:
https://canberra.naturemapr.org/sightings/4387547
Clavulinopsis sulcata is listed in the following regions:
Canberra & Southern Tablelands | South Coast