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Martin W. Callmander

Researcher at Missouri Botanical Garden

Publications -  171
Citations -  1984

Martin W. Callmander is an academic researcher from Missouri Botanical Garden. The author has contributed to research in topics: Pandanaceae & Genus. The author has an hindex of 21, co-authored 164 publications receiving 1710 citations. Previous affiliations of Martin W. Callmander include Virginia Tech.

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Plastid and nuclear DNA markers reveal intricate relationships at subfamilial and tribal levels in the soapberry family (Sapindaceae)

TL;DR: A phylogenetic analysis of Sapindaceae based on eight DNA sequence regions from the plastid and nuclear genomes and including 85 of the 141 genera defined within the family confirms a high level of paraphyly and polyphyly at the subfamilial and tribal levels and even contest the monophyletic status of several genera.
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Phylogeny and biogeography of exacum (gentianaceae): a disjunctive distribution in the Indian ocean basin resulted from long distance dispersal and extensive radiation.

TL;DR: The molecular dating analysis demonstrates that the radiation is too recent to be associated with the Gondwanan continental breakup, and Ancestral area reconstruction suggests that Exacum originated in Madagascar, and divergence dating suggests its origin was not before the Eocene.
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Spatio‐temporal history of the endemic genera of Madagascar

TL;DR: An Eocene/Oligocene onset for the origin of the Madagascan generic endemic flora, with the majority arising in the Miocene or more recently is supported, de-emphasize the importance of the Gondwanan break-up on the evolution of the flora.
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Identification of priority areas for plant conservation in Madagascar using Red List criteria: rare and threatened Pandanaceae indicate sites in need of protection

TL;DR: Analysis of field data and information from herbarium collections for members of the plant family Pandanaceae showed how risk of extinction assessments can inform conservation planning, and found centres of richness and rarity as well as gaps in Madagascar's existing protected area network.
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IUCN Red List assessment and the Global Strategy for Plant Conservation: taxonomists must act now

TL;DR: Sufficient data are available for preliminary assessment of nearly all species, thereby limiting the number that must be relegated to "data deficient" status (DD), and the taxonomic community can play a unique role in fulfilling the GSPC goals, but the authors must act quickly.