Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera

Key to Ferocactus

View taxon page for Ferocactus

(For a list of species in Ferocactus, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

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



Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, [accessed on ]

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

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