Ferocactus reppenhagenii: a mature specimen .
reppenhagenii as old plants are of a small diameter, nearly cereoid
growing with usually less than 13 ribs (while F. alamosoanus are
large globular in appearance with many ribs (more than 20).
Stem: Shortly cylindrical up to 30 cm (but usually less) in
diameter, 75 to 100 cm tall, occasionally much taller;
Ribs: 12-18 (rarely more than 13) Rounder than in F.
Areoles: In old plants they are almost connected.
Spines: Needle-like, yellowish and densely intermeshed.
Central spine: 1, sometimes flattened, to 6 cm long;
Radial spines: 8 straw-coloured, 3 to 4 cm long .
Flowers: Greenish yellow, small and narrow 3-4 cm long, 3 cm in
diameter the petals are lanceolate and acute
Fruits: Bright red and not splitting when ripe
Taxon belong to a group of six closely
allied species. The group is:
F. schwarzii, F.
F. glaucescens, & F. echidne
is a summer-growing and pretty easy species thought
slow to start. It is suited for any rich, well
drained soil in full sun throughout the year. Water it during the
aestival growth cycle (this plant need plenty of water)
but be careful not to overwater and also needs to be avoided
wetting the body of this plant while it is in sunlight. A wet cactus in
the sun light can cause sun burning which can lead to scares or even
fungal infections and death. In winter keep completely dry at 10°C, but
can tolerate sporadic light frost. Plant in good conditions will
start to bloom when reach the diameter of only 15-18 cm.
It is apt to undergo attacks of red spiders if it is placed near fruit
Seeds are the only way of
Fruit must be significantly
overripe before harvesting seed; clean and dry seeds
conspecific taxa, varieties, forms and cultivars of plants belonging to
the Ferocactus pottsii
Taxon has lots of synonyms ( like
many other cacti) whit controversial varieties and subspecies:
Scientific name: Ferocactus reppenhagenii
Pubblished in: Kakt. And. Sukk., 25 (3): 50., 1974
Origin: It is found in the states of Colima,
Michoacan, Guerrero (while the areas of distribution of the strictly
related F. alamosanus in the state of Sonora is about
1000 km apart... ...a reason to accept the two taxa as different
Conservation status: Listed in
CITES appendix 2.
- Ferocactus alamosanus ssp. reppenhagenii
(G. Unger) N.P. Taylor
Pubblished in: Cactaceae Consensus Initiatives 6: 15, 1998
- Echinocactus alamosanus Britton
et Rose 1913
- Ferocactus alamosanus var. reppenhagenii
- Parrycactus alamosanus ssp. reppenhagenii
This species has relatively delicate spines for a Ferocactus