Gymnocalycium marquezii (G. pflanzi)
It has fairly heavy spines bent backward in a
Description: Solitary or
slowly clustering, with peculiar spine clusters characteristically bent
backward in a distinctive fashion.
Stem: Flattened-globose,10-15 (25)cm in diameter, 10 cm tall,
pale green, to olive green that can
tinge of orangish purple in full sun. The epidermis has a velvety
appearance. The apex is slightly depressed and woolly.
Ribs: 10 to 12 thick, large, divided into polygonal rounded
tubercles, separated by arched furrows.
Areoles: Large long, oval 10x14 mm, with cream-yellowish wool,
then blackish dismantling with time.
Spines: Strong, very stiff, bent backward, initially blackish
with a brown base then becoming grey-pinkish to whitish brown with black
Radial spines: (5-)7-9 up to 25 mm long
Central spines: One (or two) of the same length.
Infundibuliform near the apex, diameter and height 45-50mm.
Pericarpell dull green very short. External
tepals spatulate, slightly bent outward , white with brownish green
midrib. Inner tepals intern narrower, spatulate and slightly
denticulate, white with carmine/pink purplish throat. Style carmine with
carmine pink 10-12 lobes. Pollen yellow.
Fruits: Globose of approximately 2 cm of diameter, becoming red
carmine with maturity. Pulp intense cherry-red.
Seeds: Microsemineum type, section pirisemineum, very small (0.6
testa reddish shining and smooth.
Notes: G. marquezii is very
structure to G. pfanzii var. riograndense but has shark
mat type skin, dark coppery red stem and dark spines.
Photo of conspecific taxa, varieties, forms and cultivars of
Gymnocalycium marquezii Cárdenas
Die Gattung Gymnocalycium in Bolivien.- Kakt. Sukk. 9(2): 26-27, ills.
Type: Cárdenas 5066 – Bolivia: Tarija, Entre Rios, “near Angosto de
Villa Montes” [protologue, translated] / “Angosto de Villa Montes, 600
m” [holotype], 600 m, 3.1952 (type herbaria: LIL). LIL 531592 (holotype):
rad, corp, ar, sp, fl, ic.
Nowadays regarded as:
Gymnocalycium pflanzii (Vaupel)
Garden origin (Nursery
Etymology: Named in the honour of
Dr. J. L.
Conservation status: Listed in
CITES appendix 2.
- Gymnocalycium marquezii
pflanzii var. marquezii
Gymnocalycium marquezii var. argentinense Backeberg
inval. (Art.8.2) In: Kakteenlexikon: 169, Abb. Seite 566 (1966).
Cultivation: Gymnocalycium are very gratifying plants, their culture
is easy and their flowering is abundant if we give them a well drained
relatively rich substrate (if possible not limestone)
Water regularly in summer (but do not overwater ) keep rather
dry in winter, need frequent repottings
and a very luminous exposure but avoid direct exposure to the sun rays.
This species is particularly easy and accommodating, seldom suffer of
cryptogamic diseases. Feed with a high potassium
fertilizer in summer.
Hardy as low as -5° C (or less)
if kept dry.
Propagation: Usually by Seeds.