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Botryosphaeria mamane sp. nov. Associated with Witches'-Brooms on the Endemic Forest Tree Sophora chrysophylla in Hawaii

Donald E. Gardner
Mycologia
Vol. 89, No. 2 (Mar. - Apr., 1997), pp. 298-303
DOI: 10.2307/3761086
Stable URL: http://www.jstor.org/stable/3761086
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Botryosphaeria mamane sp. nov. Associated with Witches'-Brooms on the Endemic Forest Tree Sophora chrysophylla in Hawaii
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Abstract

Botryosphaeria mamane sp. nov. occurs on the leguminous forest species Sophora chrysophylla in Hawaii. Inoculation did not demonstrate a causal relationship, but the fungus is consistently associated with branch contortions, swellings, witches'-brooms, and eventual death of tissue. Similar to B. ribis, the prominently stromatic fungus is characterized by a Fusicoccum anamorph. Microconidia are also produced. The fungus was readily cultured vegetatively on potato dextrose agar, but produced only microconidiomata abundantly. The new species is distinguished from B. ribis morphologically in having larger macroconidia, asci and ascospores, but also by its association with a symptom unusual for Botryosphaeria and its apparent limitation to an endemic host in Hawaii, suggesting that the fungus itself may be endemic.

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