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Cereus minimus scandens polygonus spinosiffimus, flore purpureo [graphic] / Milleri Ehret.1750 – 1773
Ehret, Georg Dionysius, 1708-1770.
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Opuntia fragilis (Nutt.) Haw. (little prickly-pear), flower, stamens2005 – 2012
Hagstrom, John
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Opuntia fragilis (Nutt.) Haw. (little prickly-pear), paddle leaves with spines and yellow flower2005 – 2012
Hagstrom, John
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Opuntia humifusa Raf. (Raf) (eastern prickly-pear), paddle leaves showing glochids, fruit (berry)2005 – 2012
Hagstrom, John
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Opuntia humifusa (Raf.) Raf. (eastern prickly-pear), leaves and fruit2005 – 2012
Hagstrom, John
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Opuntia imbricata (Haw.) DC. (cholla), spines and branching2005 – 2012
Hagstrom, John
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Opuntia imbricata (Haw.) DC. (cholla), macro view of spines at nodes2005 – 2012
Hagstrom, John