Spinosissima

Spinose/spinosissima With many spines.
Spittle bug Frog hoppers that suck sap from plant stems and produce saliva.
Spongy Irregularly interrupted by small, sometimes scarcely distinguishable cavities; porous.

spinosissimas, some polyanthas and groundcover roses, there's literally something for everyone. In essence, 'shrub roses' are a catchall grouping of hybridized roses that fall outside the other rose classes.

See also: Bloom, Hybrid, Hardiness, Genera, Class