Cactuspedia home | E-mail | Photo gallery | Dictionary | Search 

This old page has been moved! Click the link next on the right to enter the new Enciclopedia of Cacti. We hope you find this new site informative and useful.

The Encyclopedia of Cacti

  Coryphantha pseudonickelsae (pseudonickelsiae)
(Syn: Coryphantha delaetiana)
CACTUSPEDIA       

 


Coryphantha pseudonickelsae SB577 Rodeo, Durango, Mexico
The flowers last briefly, they are fully expanded at high noon (if in brilliant sunlight), and wilt after only an hour or two.  They bloom from April through August.
 

Description: Mostly branched with age, forming clumps.
Stem: Lime green, 6 cm in diameter, 5-7 cm tall, apex depressed with white wool.
Roots: Fibrous.
Tubercles: Conical, later rounded pyramidal, strongly elongated upward, with a pronounced groove on upper surface, dimension about 1-1,2 cm long, width at the base 15 mm. Parastichy number 8-13. Axil woolly only near the stem apex.
Areoles: Round,
2 in diameter with white wool in youth.
Radial spines: 14-18, grey-white, radiating, horizontal to slightly protruding, straight, acicular up to 1,6 cm long largely obscuring the stem, upper 2-3 more closely set, lower ones horn coloured, upper ones brownish coloured later turning grey from the base.
Central spines: 1, sometime appearing very late, often not in all areoles, at first black, then grey-white and spotty, whit black tip. 15-20 mm long, porrect, curved downward, thick and stiff.
Roots:  Diffuse or short taproots.
Flowers: Nearly apical, funnelform, 3,5 cm wide, pale  yellow (sometimes pinkish and  proximally reddish).  Perianth segment entire, lanceolate, the outer one with a reddish midstripe.
Fruits:  Green, ovoid, slimy; floral remnant strongly persistent, fruiting 2-4 months after flowering.
Seeds: Reniform, brown 1,5 x1 mm wide, testa reticulate.

Family: Cactaceae (Cactus Family)

Scientific name:  Coryphantha pseudonickelsae Backeberg
in:  Blatter Sukkulentenk. 1. 8 (1949) (Pseudonickelsiae)

Origin:  Mexico (Northeast of Durango)

Habitat: It grows in hill and slopes on lava gravel substrate.

Conservation status: Listed in CITES appendix 2.

Taxon synonyms

  • Mammillaria delaetiana A. Berger
    In: Kakteen (Berger) 270, 339. 1929
  • Coryphantha indiensis
    In: Cact. Succ. Mex. 22(4):75, 1977

Notes: This species is one of those Coryphanthas which pass a purely radial-spined youth stage in which they are already floriferous.

Cultivation: In cultivation it is quite sensitive to over-watering (rot prone), and needs good drainage.  Keep drier in winter.  Like other species from the USA. it blooms quite early, but needs about 8-10 years to reach the typical, definite outlook.  It needs full sun; and is hardy to -16 C or less for short periods of time

 

 


Photo of conspecific taxa, varieties, forms and cultivars
of plants belonging to the Coryphantha delaetiana complex
(This Taxon has lots of synonyms whit several controversial varieties and subspecies and comprises a multitude of different forms):

 

Photo gallery: Alphabetical listing of Cactus and Succulent pictures published in this site.

Photo gallery coryphantha

 



 

Cactuspedia home | E-mail | Photo gallery | Dictionary | Search 

This old page has been moved! Click the link next on the right to enter the new Enciclopedia of Cacti. We hope you find this new site informative and useful.

The Encyclopedia of Cacti