security. Undoubtedly, the most important scientific contribution to come from this time was the formation of Corner's Durian Theory. The Durian Theory was Corner's way of explaining how forests evolved to their present form. This theory was based on observations of a suite of morphological anomalies of tropical plants in Malaysia. The morphological features on which his theory was based were fruits with fleshy arils, fruits with distinct black and red coloration and seeds hanging away from the fruit. These features were relatively rare in forest plants as a whole, but they occurred across a broad range of plant families. He postulated that the peculiar characters he observed were ancestral, making them anomalies in present-day forests. For instance, it was his view that the pachycaul tree form, or stumpy little-branched tree with big leaves, was ancestral compared to the leptocaul form, or tall tree with many branches, slender twigs and small leaves. He thought that an increase in tree height was in response to feeding by ground-dwelling animals. An increase in tree height also resulted in an explosion of biodiversity in the canopy due to new niches to fill. Corner returned to England in 1949 when he was appointed Lecturer in Taxonomy and Tropical Botany at the Botany School in Cambridge. Here he was able to work on the botanical and mycological groups he had collected in Singapore. For research on the phytogeography of Ficus he visited Bougainville in 1960 and took part in the Royal Society Expedition to Solomon Islands in 1965. In 1973 he retired as Emeritus Professor. During his retirement, he generated over 2200 printed pages of accepted publications—mostly in mycological research. Contributions to mycology Corner started his career studying microfungi and published five papers on discomycetes. He then moved on to nectriaceous fungi and was likely the first person to demonstrate the intimate relationship between fungi and bryophytes. Further research regarding the fungal/bryophyte relationship has uncovered many more such associations, and researchers now estimate that more than 2000 exist. One of the qualities that made Corner such a remarkable scientist was his analytical skills; his legacy in mycology resides in the conclusions he was able to draw on fungal morphology and development as well as systematics. During his internment in Singapore, he published on Malaysian wood-rotting polypores, especially economically important ones such as Phellinus noxius. He also worked through the hyphal structure of polypores with descriptions