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  Coryphantha pseudonickelsae (pseudonickelsiae)
(Syn: Coryphantha delaetiana)
CACTUS ART
NURSERY

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of Cacti and Succulents.


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.
 

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):

 


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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

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

 


Description:
Mostly branched with age, forming clumps.
Stems: 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.
Seed: Reniform, brown 1,5 x1 mm wide, testa reticulate.

 

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

Photo gallery coryphantha

Home | E-mail | Plant files | Mail Sale Catalogue | Links | Information | Search

All the information and photos in cactus art file are now available also in the new the Enciclopedia of Cacti. We hope you find this new site informative and useful.