Douglas Chalk NDH, horticultural adviser, lecturer & nurseryman
Front cover of his book & obituary of my uncle Douglas Chalk, p.1 right hand-side of slide above, then p. 2 & p.3 below
Plant hunting for Hebes in the North Island of New Zealand p 1 & 2 above + pages 3 & 4 below
Plant hunting for Hebes in the South Island of New Zealand p 1 above + pages 2 & 3 below
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For more information about New Zealand rock garden plants see Chris' account of his travels there in the Scottish Rock Garden Society Journal, see:
https://sites.google.com/a/shpa.org.uk/main/himalayan-plant-hunter-s-foray-into-new-zealand