Synonyms:

The name Rebutia fulviseta is actually a synonym of Aylostera deminuta. Here below are some other synonyms (we don’t write down all of them because they are too numerous):

Aylostera albiareolata
Aylostera albiflora
Aylostera albipilosa
Aylostera buiningiana
Aylostera cintiensis
Aylostera deminuta var. pseudominuscula
Aylostera donaldiana
Aylostera fiebrigii
Aylostera flavistyla
Aylostera fulviseta
Aylostera fusca
Rebutia pulvinosa
Rebutia pulvinosa subsp. albiflora
Rebutia pulvinosa subsp. perplexa
Rebutia robustispina
Rebutia robustispina var. minor
Rebutia rubiginosa
Rebutia sanguinea
Rebutia sanguinea var. minor
Rebutia simoniana
Rebutia spegazziana
Rebutia spegazziniana
Rebutia spegazziniana var. atroviridis
Rebutia spinosissima
Rebutia tamboensis
Rebutia vallegrandensis
Rebutia vulpina
Rebutia walteri

Habitat:

Rebutia fulviseta originates from the regions of Bolivia (specifically Tarija and Arque, near Padcaya) and Argentina (ranging from Salta, Santa Victoria to Caspala, and extending to Santa Ana, eastward from Humahuaca). This species is typically found at an altitude of approximately 2200 meters above sea level.

Description:

Rebutia fulviseta is a small, dark green cactus that forms a mat-like structure. When exposed to full sunlight, especially on its tubercles, the epidermis turns a bronzed purple color. It is likely an ornamental variant of Rebutia deminuta. The cactus has brown-felted areoles and is adorned with bristly brown spines. Its petite dark red flowers have white filaments and measure about 2.5 cm in diameter and length, blooming during the daytime in spring. The globular or slightly elongated stem is around 1.5 cm tall and 1 cm in diameter. The epidermis appears very dark tan, green, or brown, almost black, with a reddish-violet hue. It has up to 16 spiraling ribs covered in tubercles. The round or oval areoles feature a brown covering. The plant takes on a characteristic bristled-up appearance due to the 10-12 radials and 1-3 centrals spines, which are thin, tawny or reddish-brown with darker tips. The fruit is spherical, about 4 mm in size, and dark red in color.

Cultivation:

Cultivating Rebutia fulviseta, while generally straightforward, requires specific attention for successful summer flowering. To achieve this, careful consideration during the colder months is essential. Ensuring a cool and sheltered winter habitat is pivotal.

Outlined below are tailored cultivation recommendations for Rebutia fulviseta:

Opt for a well-lit location, but safeguard the plants from direct sunlight during peak daytime heat to prevent sunburn. If kept indoors, it’s advisable to maintain a dry and well-ventilated environment.
Maintain temperatures slightly above freezing, as this species can endure a few degrees above 0ºC.
During the summer months, adhere to a regular watering schedule, approximately every 4-5 days. As autumn approaches, gradually reduce the frequency, ultimately ceasing watering entirely during the winter dormancy period.
Choose a standard cactus soil mix that strikes a balance between drainage and nutrient content. The soil should be well-draining while not overly rich in nutrients.
In the spring season, apply a specialized cactus fertilizer once a month, utilizing half of the recommended dosage provided on the product packaging.
Re-potting need not be an annual practice, given the modest growth rate and compact size of Rebutia fulviseta.

Propagation:

Propagation of this species is achievable solely through seeds; cuttings are not a viable method. Occasionally, offsets can be employed for propagation purposes.

Curiosity:

The etymology of the scientific name “Rebutia fulviseta” can be broken down as follows:

“Rebutia” refers to the genus of cactus to which this species belongs. The genus was named in honor of Pierre Rebut, a French cactus enthusiast.
“fulviseta” is a combination of two Latin words: “fulvus,” meaning “tawny” or “reddish-brown,” and “seta,” which translates to “bristle” or “hair.” This likely refers to the characteristic bristle-like structures on the cactus, which might have a reddish or tawny hue.

Official Web Site:
www.giromagi.com

Italian Blog:
www.giromagicactus.com

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