Jepson eFlora
Key to families | Table of families and genera

Key to Ferocactus

View taxon page for Ferocactus

1. Perianth generally maroon outside, generally yellow within; stem generally > 0.4 m, 25–50 cm diam; ribs (18)21–31; inland ..... F. cylindraceus

1' Perianth ± all green-yellow; stem generally < 0.2 m, 10–25 cm diam; ribs 13–21; coastal ..... F. viridescens

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Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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