obdiplostemonous

English

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Adjective

obdiplostemonous (not comparable)

1. (botany, of flowers) Having two sets of stamens in alternating whorls, with the outer whorl opposite the petals.
   • 1978, Hsüan Keng, Ro-Siu Ling Keng, Orders and families of Malayan seed plants: synopsis of orders and families of Malayan gymnosperms, dicotyledons, and monocotyledons, NUS Press, page 173:

     [...] the stamens, which are definite in number, normally obdiplostemonous (namely, the stamens are in two alternating whorls, those of the outer whorl opposite the petals – see Fig. 102) [...]

   • 1990, Klaus Kubitzki, Karl Ulrich Kramer, P. S. Green, Jens G. Rohwer, Volker Bittrich, The Families and genera of vascular plants, volume 6, Springer, page 435:

     This arrangement led van Steenis (1932) to hypothesize an obdiplostemonous ancestor for the family.

   • 1996, Peter K. Endress, Diversity and evolutionary biology of tropical flowers, Cambridge University Press, page 96:

     Diplostemonous and obdiplostemonous flowers may also occur in the same family (e.g. Rutaceae); Zygophyllaceae are obdiplostemonous, Liliaceae are diplostemonous.

   • 2010, Louis P. Ronse De Craene, Floral Diagrams: An Aid to Understanding Flower Morphology and Evolution, Cambridge University Press, page 203:

     In the genus Mitella the androecium can exceptionally be more variable, ranging from obdiplostemonous to (ob)haplostemonous arrangements.