echinulate

From Latin echinulus (“little hedgehog”).

echinulate (comparative more echinulate, superlative most echinulate)

1. (biology) Having small spines or similar projections
   • 1970, Lewis Herrick Flint, Freshwater Red Algae of North America‎^[1], page 76:

     An interesting feature of the plant was the occasional incidence of radiate, mostly unbranched bracts in the cystocarp, giving it an echinulate appearance.

• echinulation

• echinulate on Wikipedia.Wikipedia