Siphonotreta unguiculata, obolus grits.
"The Student's Elements of Geology"
Sir Charles Lyell
Folia opposita; sepala unguiculata.
"Expedition into Central Australia"
Charles Sturt
Folia alterna; sepala unguiculata, eglandulosa; antherae exsertae.
"Expedition into Central Australia"
Charles Sturt