Kew Bulletin

, 73:11 | Cite as

The taxonomy and morphology of Schizomeria (Cunoniaceae) in New Guinea, the Moluccas and the Solomon Islands, with notes on seed dispersal and uses throughout the genus

  • Helen C. F. Hopkins


Schizomeria is a genus of forest trees or occasionally understorey shrubs represented by some seven species in New Guinea, one of which extends west to the Moluccas and two eastwards to the Solomon Islands; an additional two or three species occur in eastern Australia. In New Guinea, Schizomeria grows from lowland to subalpine forest, with most species occurring in the montane zone. This revision presents a key to the species, plus synonymy, descriptions, distribution maps, provisional conservation assessments and an index to collections for the taxa in New Guinea, the Moluccas and the Solomon Islands; local names are given in an Appendix. Species delimitation in New Guinea is not always straightforward and several taxa are quite variable, or have blurred boundaries, or both. Morphological characters that are useful in distinguishing among species include the type and distribution of the indumentum, the structure and position of the inflorescence (whether terminal, false-terminal or axillary) and the presence or absence of subspherical glands on the leaves. The flowers are polysymmetric, green, white or pale yellow, with small, 3-toothed petals; some species are andromonoecious. The subspherical or ellipsoidal drupes have a brown, orange, yellowish or whitish epicarp; they are dispersed by vertebrates, including cassowaries, fruit-bats and other arboreal frugivores including pigeons. The timber has some commercial value plus a number of local uses. Data for the Australian taxa are included in the discussions of dispersal and uses.

Key Words

cassowary inflorescence structure leaf glands montane forest taxonomic complexity 



I started this study as a Visiting Research Fellow in the Department of Biological Sciences, Lancaster University and I am grateful to Prof. John Whittaker for facilitating this arrangement. Funding at LANC was provided by L from the Kosterman’s Bequest, kindly arranged by Prof. Pieter Baas. The work was completed at K, where I thank Bob Johns for coating the SEM stubs, Chrissie Prychid for taking the SEM photographs, Hazel Wilkinson for guidance about cutting leaf sections, David Frodin for help with obscure localities, Rafaël Govaerts for advice regarding nomenclature and types, and Lulu Rico for hospitality in London in the early stages of the work. I am grateful to the curators of the following herbaria for access to collections or for providing images: A, B, BM, BO, CANB, E, K, L, LAE, MO, P, QRS (now incorporated in CNS) and SING, and especially L for making material from other institutions available for study at LANC. I also thank QRS, Jason Bradford and Rhys Gardner for gifts of material; Jason Bradford, Mark Coode, Rhys Gardner and Tim Utteridge for photographs; Debra Wright and Andy Mack for information on seed dispersal by cassowaries; Andrew Rozefelds for discussions on Australian Schizomeria; Holly Somerville for the beautiful line drawings; and an anonymous reviewer for helpful comments on the manuscript. Files of taxonomic literature on the Cunoniaceae, complied by Ruurd D. Hoogland and deposited at P, were consulted regarding names and protologues.


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© The Board of Trustees of the Royal Botanic Gardens, Kew 2018

Authors and Affiliations

  1. 1.Department of Identification and Naming, Royal Botanic GardensRichmondUK

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