| Click on the photos to view them full size. | ||||
| Subs. Nelsonianae | Subs. Krempfianae | Subsection Gerardianae | ||
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| Subsection Rzedowskianae | |||
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| Subsection Cembroides | ||||
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| Subsection Balfourianae | |||
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Photos : © Michael P. Frankіs
