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THIS PAGE IS NO LONGER UPDATED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 SCLEROCACTUS
N.B.: couplets are linked, e.g., 1. is linked to 1'.
1.
Central spines 4–8, straight to curved but not hooked
S. johnsonii
1'
Central spines 9–11, some hooked at tip
S. polyancistrus
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