Discocactus fariae-peresii
| Discocactus fariae-peresii | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Genus: | Discocactus |
| Species: | D. fariae-peresii
|
| Binomial name | |
| Discocactus fariae-peresii P.J.Braun
| |
Discocactus fariae-peresii is a species of Discocactus found in Brazil.[1]
Description
This species is characterized by its flattened-globular or discoid stems, which reach 16 to 22 cm in diameter and have a yellowish-green epidermis. The stems are adorned with 17 to 23 distinct, vertically arranged ribs bearing well-developed tubercles. Circular, sunken areoles sit atop these tubercles, above ground level. While there are no central spines, the plant features 6 to 8 radial spines that can grow 10 to 25 cm long. Adult plants develop a distinctive cushion-shaped, woolly cephalium at their apex, composed of white wool with black bristles along its edge. This cephalium serves to protect the plant's sensitive tip from cold and intense UV radiation, and its conspicuousness even before flowering suggests it may also attract pollinators.[2] The white, funnel-shaped flowers of Discocactus fariae-peresii are sweetly scented and emerge from the edge of the cephalium, opening at night to be pollinated by moths. These flowers measure 8 to 12 cm long and 6 to 8 cm in diameter, with narrow petals. The pericarpel is bare at the base and scaled towards the top, lacking wool and hairs. Ripe fruits, up to 3.5 cm long, split vertically and retain persistent floral remnants. They contain shiny black seeds, each up to 2 mm long, with a strongly tuberculate testa.[3]
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Flowers
Distribution
Discocactus fariae-peresii is a small, solitary cactus found in west-central Brazil, specifically in the seasonally dry tropical biome of Goiás, growing among rocks and sandy soils.
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Plant growing in Planaltina, State of Goiás, Brazil
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Plant growing in São Gabriel de Goiás, Planaltina - State of Goiás, Brazil
Taxonomy
First described by Pierre Josef Braun in 2016 in the journal Kakteen und andere Sukkulenten, the species was named in honor of its discoverers, Brazilians Bento Paschoal de Faria and Adilson Peres.[4]
References
- ^ "Discocactus fariae-peresii P.J.Braun". Plants of the World Online. Retrieved 2024-01-02.
- ^ Pin, Ana Beatriz (2004). Guía ilustrada de los cactus del Paraguay (PDF) (in Spanish). Asunción: Presidencia de la Republica, Secretaría del Ambiente. ISBN 99925-3-326-9.
- ^ Braun, Pierre J (2017-10-01). "Kakt. and. Sukk. 68(10): centerfold card 20". ResearchGate. Retrieved 2026-01-18.
- ^ Eggli, Urs; Newton, Leonard E. (2004-03-11). Etymological Dictionary of Succulent Plant Names. Berlin ; New York: Springer Science & Business Media. ISBN 978-3-540-00489-9.
External links
- Media related to Discocactus fariae-peresii at Wikimedia Commons
- Data related to Discocactus fariae-peresii at Wikispecies