Definition that contains osperm
- tree a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms
- flower reproductive organ of angiosperm plants especially one having showy or colorful parts
- bloom reproductive organ of angiosperm plants especially one having showy or colorful parts
- blossom reproductive organ of angiosperm plants especially one having showy or colorful parts
- conifer any gymnospermous tree or shrub bearing cones
- class pinopsida most conifers: in some systems classified as a class (Pinopsida) and in others as a subdivision (Pinophytina); used in some classifications for one of five subdivisions of Gymnospermophyta
- jumbie bead West Indian tree similar to Ormosia monosperma but larger and having smaller leaflets and smaller seeds
- vascular plant green plant having a vascular system: ferns, gymnosperms, angiosperms
- subdivision cycadophytina palmlike gymnosperms: includes the surviving order Cycadales and several extinct orders; possibly not a natural group; in some systems considered a class (Cycadopsida) and in others a subdivision (Cycadophytina or Cycadophyta)
- bennettitales fossil gymnospermous plants of the Carboniferous