The Jepson Manual: Higher Plants of California
THIS PAGE IS NO LONGER UPDATED
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
Up-to-date information about California vascular plants is available from the
Jepson eFlora
.
Names are linked to treatments from the Manual
Key to FEROCACTUS
N.B.: couplets are linked, e.g., 1. is linked to 1'.
1.
Plant < 0.3 m; ribs 13–20; spines < 5 cm; coastal
F. viridescens
1'
Plant > 1 m; ribs 18–27; spines generally > 5 cm; interior
F. cylindraceus
2.
Central spines 7.5–17 cm; seed 2–3 mm; < 600 m
var. cylindraceus
2'
Central spines 5–7 cm; seed 1–2 mm; > 700 m
var. lecontei
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