Big Arroyo Rockmat (Petrophytum acuminatum Rydb.)
Also classified as Petrophytum caespitosum subsp. acuminatum (Rydb.) Munz.
POWO has reclassified this taxon as a subspecies, Petrophytum caespitosum subsp. acuminatum (Rydb.) Munz. We have yet to review this reclassification.
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