1. a type of vascular cylinder in plant stems where the vascular tissue forms a hollow tube with pith in the center and cortex on the outside
Usage: botanical

Examples

• The fern’s siphonostele allows for efficient transport of water and nutrients throughout the plant.
• Botanists identified the siphonostele structure in the cross-section of the stem.
• The siphonostele represents an evolutionary advancement in vascular plant anatomy.
• Students examined the siphonostele under the microscope during their plant biology lab.
• The hollow center of the siphonostele distinguishes it from other types of steles.
• Many ferns possess a siphonostele as their primary vascular arrangement.