UNIDENTIFIED AGAVE, CHICAGO BOTANIC GARDEN, GLENCOE, ILLINOIS, MARCH 14, 2013
Tamron 90mm f2.8 macro
1/750 sec. f13
Identifying some of the plants in the arid greenhouse at the Botanic Garden can be difficult, for they're all jammed together with ID nameplates scattered willy-nilly. This does appear to be some kind of agave, but the species is elusive. Note the ghostly green spikes on the blades of the leaves; I wonder what their purpose is.