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Two New Species and Three Lectotypifications in the Ibatia-Matelea Complex (Apocynaceae: Asclepiadoideae) from Northern South America
Alexander Krings and Amanda C. Saville
Vol. 32, No. 4 (Oct. - Dec., 2007), pp. 862-871
Published by: American Society of Plant Taxonomists
Stable URL: http://www.jstor.org/stable/25064299
Page Count: 10
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Two new species of Matelea (Apocynaceae: Asclepiadoideae, Gonolobinae) are described from northern South America: M. fontana and M. pacifica. The species belong to the Ibatia-Matelea complex, but exhibit distinct differences in floral characters from previously known taxa, including the structure of gynostegial coronas. A key and descriptions to members of the northern South American and West Indian Ibatia-Matelea complex is provided, including M. cumanensis, M. maritima, and M. rubra. Asclepias maritima, Cynanchum fimbriatum, and Ibatia muricata are lectotypified.
Systematic Botany © 2007 American Society of Plant Taxonomists