Hi again, I was puzzled by how different your plant looks from the photos of brevifolia I have seen... I asked two colleagues and it's Erica azorica, the Azorean tree heath, related toErica canariensis and Erica arborea.
Brevifolia subsp. maritima seems to occur only at the Miradouro de Alagoa.
Juniperus Alagoa - Terceira
Brevifolia subsp. maritima seems to occur only at the Miradouro de Alagoa.
Juniperus Alagoa - Terceira