Botanical term for a small, sharp outgrowth from the epidermis of a plant, such as on rose stems.
Rose stems have prickles.
棘 is a general term for thorns, spines, or prickles, while 刺状突起 is a more precise botanical term specifically for epidermal prickles.
Compound of 刺状 (thorn-shaped) and 突起 (protrusion). The exact historical derivation is uncertain; the spelling is conventionally associated with the botanical meaning.