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Brittonia

, Volume 59, Issue 4, pp 308–327 | Cite as

Novelties in Adenia (Passifloraceae): Four new species, a new combination, a vegetative key, and diagnostic characters for known Madagascan species

Abstract

Four new species and one new combination ofAdenia are presented, along with a vegetative key and diagnostic characters of the Madagascan species. Additional notes are provided about unusual specimens and field observations.Adenia kigogoensis from Tanzania is shown to be distinct fromA. stenodactyla (its putative closest relative) andA. digitata based on anther connation and other floral traits. The remaining new taxa are from Madagascar.Adenia litoralis has been observed from one coastal locality in northern Madagascar. It is distinctive in fruit size and leaf form.Adenia metamorpha is the only Madagascan taxon with a narrow cylindrical trunk and large napiform tuber; it is also known from only one locality in Madagascar in the Ankarana Reserve.Adenia mcdadiana is a robust liana with highly reduced glands and leaves that appear to be neotenic compared to its closest putative relative,A. sphaerocarpa. Finally, the position ofA. stylosa has been clarified. This species was once treated asA. firingalavensis var.stylosa, and prior to that asA. epigea var.stylosa, but molecular and morphological data suggest it is separate from these species.

Key words

Adenia growth form Madagascar Passifloraceae vegetative key 

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Literature Cited

  1. Bardot-Vaucoulon, M. 1997. Observations sur le milieu et la végétation du Massif de l’Ankarna (nord de Madagascar) et description de trois nouvelles espèces deChlorophytum (Liliaceae),Tacca (Taccaceae), etAdenia (Passifloraceae). Adansonia 19: 139–162.Google Scholar
  2. Bines, J. A. 1981. Australian Plant Genera. An Etymological Dictionary of Australian Plant Genera. Part I of Australian Plant Study Series. The Society for Growing Australian Plants. Surrey Beatty & Sons Pty. Ltd.: Chipping Norton, N.S.W., Australia.Google Scholar
  3. De Wilde, W.J.J.O. 1970. A survey of the species of the genusAdenia (Passifloraceae) in Madagascar, with some new combinations, the description of some new taxa, and a key to the species. Adansonia 10: 111–126.Google Scholar
  4. —. 1971. A monograph of the genusAdenia Forsk. (Passifloraceae). Mededelingen Landbouwhogeschool Wageningen 71–18: 1–281.Google Scholar
  5. —. 1974. The genera of Tribe Passifloraeae (Passifloraceae), with special reference to flower morphology. Blumea 22: 37–50.Google Scholar
  6. Hearn, D. J. 2004. Growth form evolution inAdenia (Passifloraceae) and a model of the evolution of succulence. PhD Dissertation: University of Arizona, Tucson.Google Scholar
  7. —. 2006.Adenia (Passifloraceae) and its adaptive radiation: Phylogeny and growth form diversification. Systematic Botany 31: 805–821.CrossRefGoogle Scholar
  8. Liebenberg, L. C. C. 1939. A revision of the South African species ofAdenia. Bothalia 3,4: 513–570.Google Scholar
  9. Perrier de la Bâthie, H. 1945.In: H. Humbert (ed.), Flore de Madagascar et de Comores (Plantes vasculaires), Passifloraceae fam. 143: 2–48. Gouvernement Général de Madagascar, Tananarive, Madagascar.Google Scholar

Copyright information

© The New York Botanical Garden 2007

Authors and Affiliations

  1. 1.Ecology and Evolutionary BiologyUniversity of ArizonaTucsonUSA

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