Several diseases are newly reported on Proteaceae from Hawaii, where these
plants are cultivated as exotics. New records of leaf spot pathogens includ
e Coleroa senniana, Botryosphaeria proteae, Fusicoccum sp., Leptosphaeria p
rotearum, Phyllosticta telopea and Pestalotiopsis spp. New species such as
Chaetochalara proteae, Physalospora hawaiiensis, Heteroconium neriifoliae,
Mycosphaerella holualoana, M. konae, M. waimeana and Stictis leucospermi ar
e also described from leaf spots. Several common stem pathogens are recorde
d, namely Colletotrichum gloeosporioides, Botryosphaeria dothidea, Drechsle
ra dermatoidea, Elsinoe banksiae and E. leucospermi. In addition to providi
ng descriptions and cultural data for these pathogens, this paper also prov
ides baseline data of Proteaceae pathogens occurring in Hawaii.