Xiquexique gounellei subsp. gounellei

The hot caatinga of eastern Brazil

Xiquexique gounellei subsp. gounellei is native to northeastern and east-central Brazil. It grows as a branching succulent shrub in the caatinga, a seasonally dry tropical landscape.

The habitat combines intense sun, high heat, low humidity and long droughts with brief seasonal rain. Several thick stems store water, and dense spines shield them in exposed sites. Give the cactus maximum light, a gritty mix and long gaps between waterings.

Growing Xiquexique gounellei subsp. gounellei in a pot

Intense light around the branching stems

Place the cactus in a very bright position and introduce direct sun in stages. Strong light keeps the narrow ribbed stems firm and supports dense spine growth. Shade produces pale, stretched tips.

Soak deeply, then let the mix dry

During warm active growth, soak the root ball and let every drop drain. Wait until the mix is dry throughout before watering again. Extend the dry period in cool weather.

A gritty mix and a stable base

Use a coarse cactus mix in a heavy pot with a clear drainage hole. Give the branched base enough width to stand securely, with only a modest depth of compost around the roots.

Dry winter conditions and light feeding

Keep the plant bright, protected from frost and substantially drier during winter. Apply low-nitrogen cactus fertiliser sparingly after active growth and water uptake resume.

Common issues with Xiquexique gounellei subsp. gounellei

The growing tip becomes narrow and pale

Insufficient light stretches the ribbed stem and reduces the density of new growth. Move the cactus into stronger light a little at a time. The narrow section will remain after firmer growth returns.

The stem softens at soil level

Wet mix during cool or inactive conditions can rot the base. Stop watering, inspect the roots and remove all dark, soft tissue. Repot the healthy plant in fresh, gritty cactus mix.

Pale tan patches appear between the spines

Sunburn follows an abrupt move into intense light. Acclimatise in stages and keep the scarred area dry; healthy new tissue should remain firm and evenly coloured.

Firm corking or spreading dark decay

A dry, localised scar around an old wound can remain stable. Expanding dark softness indicates active decay and requires removal back to clean firm tissue.

Scale or mealybugs hide among ribs and spines

Inspect the areoles, rib valleys and root collar from several angles. Isolate the cactus and repeat targeted control because the dense spines obscure small pests.

Xiquexique gounellei subsp. gounellei has sharp parts

• Keep this plant away from children and pets because its effects after chewing or swallowing are unclear.
• Sharp spines can puncture the mouth, eyes, skin or paws.
• Handle it carefully. Contact a veterinarian or medical professional after a serious injury, especially to the eye.

How did Xiquexique gounellei get its name?

Xiquexique adopts a Brazilian Portuguese vernacular name used for these cacti. Gounellei honours French entomologist and collector Pierre-Émile Gounelle.

Pâmela Lavor, Alice Calvente, and Leonardo M. Versieux established the genus Xiquexique in 2020 in PlantNow, volume 1, issue 2, page 63.

Karl Moritz Schumann first described it as Pilocereus gounellei in 1897 in Gesamtbeschreibung der Kakteen, page 188; Frédéric Albert Constantin Weber had proposed that name. Pâmela Lavor and Alice Calvente later placed it in Xiquexique as Xiquexique gounellei in 2020 in PlantNow, volume 1, issue 2, page 63.