Praecereus

Praecereus
	Right-hand plant is Praecereus saxicola (as Monvillea saxicola)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Caryophyllales
Family:	Cactaceae
Subfamily:	Cactoideae
Tribe:	Cereeae
Subtribe:	Cereinae
Genus:	Praecereus; Buxb.
Species
	See text.
Synonyms
	Monvillea Britton & Rose; × Prillea M.H.J.van der Meer;

Praecereus is genus of cactus. It is sometimes included in the genus Cereus.

Description

Plants have a bushy to tree-like species that are sometimes stretched out, mostly freely branched and reach a height of up to 6 meters. The slender, columnar to hanging shoots have 7 or more ribs with protruding, round and gray areoles from which needle-like or umbilical thorns arise.^[2]

The robust, funnel- to bell-shaped flowers are white to yellowish green and open during the day. Its strong flower cup and flower tube are thick-walled, fleshy and often curved.^[2]

The fleshy, short, ovoid fruits that split open lengthwise are red with a persistent flower residue and contain white flesh. The black, bumpy seeds are oblong and ovoid and somewhat compressed at the sides.^[3]

Species

As of October 2023^[update], two species were accepted:^[1]^[4]

Image	Scientific name	Distribution
	Praecereus euchlorus	Bolivia and Paraguay
	Praecereus saxicola	Bolivia, Argentina and Paraguay

References

^ ^a ^b ^c "Praecereus Buxb." Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2023-10-01.
^ ^a ^b "On-line Guide to the positive identification of Members of the Cactus Family". www.cactiguide.com. Retrieved 2024-06-21.
^ "PRAECEREUS – THE LAST CACTUS CLASSIFICATION". 2016-05-24. Retrieved 2024-06-21.
^ Korotkova, Nadja; Aquino, David; Arias, Salvador; Eggli, Urs; Franck, Alan; Gómez-Hinostrosa, Carlos; Guerrero, Pablo C.; Hernández, Héctor M.; Kohlbecker, Andreas; Köhler, Matias; Luther, Katja; Majure, Lucas C.; Müller, Andreas; Metzing, Detlev; Nyffeler, Reto; Sánchez, Daniel; Schlumpberger, Boris; Berendsohn, Walter G. (2021-08-31). "Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family". Willdenowia. 51 (2). Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. doi:10.3372/wi.51.51208. ISSN 0511-9618.

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[POWO_290902-2-1] "Praecereus Buxb." Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2023-10-01.

[:0-2] "On-line Guide to the positive identification of Members of the Cactus Family". www.cactiguide.com. Retrieved 2024-06-21.

[3] "PRAECEREUS – THE LAST CACTUS CLASSIFICATION". 2016-05-24. Retrieved 2024-06-21.

[Korotkova_Aquino_Arias_Eggli_2021_p.-4] Korotkova, Nadja; Aquino, David; Arias, Salvador; Eggli, Urs; Franck, Alan; Gómez-Hinostrosa, Carlos; Guerrero, Pablo C.; Hernández, Héctor M.; Kohlbecker, Andreas; Köhler, Matias; Luther, Katja; Majure, Lucas C.; Müller, Andreas; Metzing, Detlev; Nyffeler, Reto; Sánchez, Daniel; Schlumpberger, Boris; Berendsohn, Walter G. (2021-08-31). "Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family". Willdenowia. 51 (2). Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. doi:10.3372/wi.51.51208. ISSN 0511-9618.

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