escallonia, a genus of saxifragaceous shrubs and trees, natives chiefly of the Andes.
It's likely that both are errors for escallonia, but they are preserved as printed.
This is usually the case with Ilex, escallonia, and Cydonia.
The escallonia, that grows up the house, will hang its red flowers in front of the library windows for a fortnight still to come.
The flowers are sheltered from the boisterous winds where necessary by high hedges of euonymus, veronica, and escallonia.