Praecereus
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''Praecereus'' is
genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
cactus A cactus (: cacti, cactuses, or less commonly, cactus) is a member of the plant family Cactaceae (), a family of the order Caryophyllales comprising about 127 genera with some 1,750 known species. The word ''cactus'' derives, through Latin, ...
. 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. 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. 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.


Species

, two species were accepted:


References

Cereeae genera {{Cactus-stub