Spines and Thorns and Prickles

The conservatories at Brookside Gardens held more than model trains when I went last week. I was drawn to the cactus and took some macro shots of spines – like the ones I took at Bosque del Apache.

The Castor-Bean Begonia (Begonia ricinifolia) and prompted me to research differences between spines and thorns. I checked the Wikipedia article on the topic.  I discovered there are prickles and other semantics. Did you know that roses have prickles – not thorns? True thorns are modified branches or stems…so these red things on the Caster-Bean Magnolia are probably not thorns. But are they prickles? Maybe. The larger ones seem to be split into hair-like structures but the smaller one are barbs. I didn’t touch the plant to find out how sharp they were!