Staurastrum unicorne var. nodiferum
Staurastrum unicorne f. retusum
Staurastrum unicorne var. ceylanicum
Staurastrum unicorne var. longicorne
Staurastrum unicorne f. tetragonum
Staurastrum unicorne var. divergens
(tree size 1)
Staurastrum unicorne var. ecorne
(tree size 1)
Staurastrum unicorne var. eximium
Staurastrum unicorne var. goyazense
Staurastrum unicorne var. gracile
Staurastrum unicorne var. isthmosum
Staurastrum unicorne var. longicolle
Staurastrum unicorne var. obesum