Habitat: stony, arid
regions of
Mexico. Description: a group of plants showing upright or climbing habit with
slim, angular stems with few short spines. The nocturnal, long-tubed flowers
may be fragrant. The taproot is large and conical.
There may be some synonyms in Wilcoxia. Soil: basic mix. Location: choose a very bright place. Temperature: we recommend a minimum temperature of 8-10°C (46-50°F). Water: less than average; the plant stores water in its caudex. Cultivation tips: propagate from seed or cutting. Main species: P. jonstonii, syn. Cereus j. P. maculatus; P. greggii;
P. rosei, it spreads slowly over the nearby area but its habit is not as
sprawling as that of Machaerocereus eruca; P. diguetii; P. viperinus; P. marianus, syn. Wilcoxia m.; P.
greggii: with a sturdy root.