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Synonym

Lophophora williamsii var. decipiens

Treated by Kew as a synonym of Lophophora williamsii; often found on older, garden-labelled plants.

Lophophora williamsii var. decipiens — photo 1 of 3
Photo: CostaPPPR — CC BY-SA 3.0 · via Wikimedia Commons
Last reviewed: 30 September 2026
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Quick facts

FamilyCactaceae
SubfamilyCactoideae
TribeCacteae (subtribe Cactinae)
GenusLophophora
Name as publishedLophophora williamsii var. decipiens Croizat, Desert Pl. Life 16: 44 (1944)
Kew (POWO) statusSynonym of Lophophora williamsii
Accepted nameLophophora williamsii (Lem. ex J.F.Cels) J.M.Coult.
Native rangeTreated under L. williamsii (SW. and S. Texas to NE. Mexico, to Jalisco)
Conservation statusNot separately evaluated; the accepted species is IUCN Vulnerable (VU)

Description

"Decipiens" is an old garden label, most often seen on long-cultivated plants rather than on fresh wild-collected material. On its own the label describes no particular stem colour, rib pattern or flower character beyond what is typical of L. williamsii generally — it marks a lineage in a collection, not a distinct botanical form.

Taxonomy and names

Kew places Lophophora williamsii var. decipiens Croizat, published in 1944, in synonymy under L. williamsii. A later study found that because "decipiens" was named thirty years before L. fricii existed as a published name, most plants historically labelled "L. williamsii var. decipiens" in collections are now believed to actually be L. fricii, a conclusion drawn independently from seed-coat and testa microscopy. That finding does not change Kew's nomenclatural placement of the name itself as a synonym of L. williamsii — it is a fact about how plants were historically mislabelled, not a change to the accepted synonymy. Keep the received "decipiens" label on a plant's record, and add a separately dated determination only when one is actually supported by the specimen.

Kew · Lophophora williamsii ↗

Cultivation

Grow as for L. williamsii: a gravelly, well-drained mineral mix, bright light, and a dry, frost-free winter. See the soil-mix guide and the seasonal-care calendar.

References