fagonia cretica
Webster's Dictionary (GCIDE)
1.Full of thorns or spines; rough with thorns; spiny; as, a thorny wood; a thorny tree; a thorny crown. [1913 Webster]
2.Like a thorn or thorns; hence, figuratively, troublesome; vexatious; harassing; perplexing. "The thorny point of bare distress." --Shak. [1913 Webster]
The steep and thorny way to heaven.— Shak.[1913 Webster]
Thorny rest-harrow (Bot.), rest-harrow.
Thorny trefoil, a prickly plant of the genus Fagonia (Fagonia Cretica, etc.). [1913 Webster]