Detail, Canary Island Spurge
D044-2017 Canary Island Spurge, Euphorbia #16
This shot shows that the spines on new growth are brown, with even darker tips. As they age, they gradually become bleached of color, with the color in the tips persisting after the color in the bulk of the spines is long gone.
Arid House at the Conservatory
Matthaei Botanical Gardens, Ann arbor
Taken February 13, 2017
From Xeric Plants Through the Year