Echinate: set with prickles.
"Explanation of Terms Used in Entomology" by John. B. Smith
Spikelets binate and all round the rachis, 3-glumed, glumes echinate 14.
"A Handbook of Some South Indian Grasses" by Rai Bahadur K. Ranga Achariyar
Echinate: Beset with pointed prominences.
"The Elements of Bacteriological Technique" by John William Henry Eyre