Ceratocystis lukuohia
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Author(s): I. Barnes et al.
Source: Persoonia (2018), 40, p. 161
Ceratocystis lukuohia I. Barnes, T.C. Harr. & L.M. Keith 2018 - (rapid ʻōhiʻa, Ceratocystis wilt of ʻōhiʻa)
This fungus causes extensive and rapid mortality of Metrosideros polymorpha, a native tree or shrub (ʻōhiʻa lehua) in Hawai'i. The disease has been first noticed in 2010 and has killed hundreds of thousands trees within a period of a few years. The host tree is an important habitat of many endemic birds and insect species on the islands.
The disease symptoms start with wilting of individual upper branches. The wilted leaves typically remain attached to the dead or dying branches. Wilting occurs with days to a few weeks and the disease quickly spreads through the canopy. The outer xylem of affected trees shows black radial discolouration or staining. The species name is derived from the Hawaiian words luku (destruction) and ˋōhiˋa, the host tree (Barnes et al., 2018).
For the detailed taxonomic description see Barnes et al. (2018).
