Botany
Anon (1956) "Manuka Blight" Rep. Dep. Sci. Indust. Res N.Z. 1955/56 1956 p12.
Abstract. Whereas Leptospermum scoparium has been almost wiped out in some areas by the scale insect Eriococcus orariensis, L. ericoides (kanuka) is immune.
The difference is apparently due to a difference in bark, that of manuka being rough & affording harbourage to large populations, while the smoother bark of kanuka limits the period for crawlers to become fixed. Surviving manuka was found to be smooth-barked like kanuka.
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