Gardner, D. E. . Unpublished: Other leaf and stem-infecting fungi Unpublished
ABSTRACT
Often in conjunction with other investigators, I found several common and widespread genera of leaf and stem infecting fungi in Hawaii's native forests. The question always to be addressed was whether the actual species of the pathogens in questions were unique to Hawaii as were their hosts. In some cases this could be quite easily determined, whereas in others the origins and affinities were less clear. In this context, some fungi, Phyllacora cibotii on Cibotium (tree fern) [I was not an author in this study but was aware of it], Elsinoe vaccinii on ohelo, Botryosphaeria pipturi on mamaki (Pipturus albidus), and Braziliomyces setaceus on soapberry (Sapindus) were described as new species. On the other hand, other fungi on native hosts: Septoria spp. and Mycosphorella spp. on ohia, holly (Ilex anomala), soapberry (Sapindus saponaria), and ohelo leaves, Cercospora sp. on kauila (Alphitonia ponderosa), were recognized as probable new, native species, but their formal publication as such was left to further clarification. Septoria leaf spot on Canavalia kauensis is probably caused by a new species of the pathogen, but I chose to refer it to an already described species because of uncertainties surrounding legitimacies of the large number of Septoria spp. already described. I observed a disease of maile (Alyxia oliviformis) in Kipuka Puaulu that cause the stem tissue to collapse. A fungus was isolated from diseased tissue, but Koch's postulates were not followed in determining the fungus to be the cause of the disease. Therefore the observation was not published. A prominent "target board" type leaf spot was frequently found on Pisonia sandwicensis. The leaf spot is probably caused by a fungus although Koch's postulates were not completed for the fungi isolated. I observed a prominent leaf spot, visible on both surfaces, on Cyrtandra platyphylla, but did not determine the cause. An unknown fungus was found infecting pine needles (all gymnosperms in Hawaii are introduced).
FULL TEXT
Full text not available for this publication.
