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Description: Usually
solitary globular cactus with apex covered with incurved,
rust-coloured spines.
Stem: Globose to sub-globose or cylindrical
as it becomes old, grey green, up to 12 cm in diameter.
Ribs: About 12-13.
Areoles: Oval, woolly and hairy when young (with yellowish felt),
later naked.
Radial spines: 7 to 12 about 1,5-2 cm long, horn coloured,
brownish becoming grey as the age.
Central spines: 1-4, subulate, nearly 2,5 cm long, rusty red
later grey sometime with black tips, all curved upwards,
base swollen.
Flowers: From the from centre of plant 2.5-5 cm in diameter,
Urn-shaped, straw coloured, yellow or green yellow.
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Spines are curved upwards with a swollen
base . |
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Family:
Cactaceae (Cactus
Family) |
Scientific Name:
Eriosyce
bulbocalyx (Werderm.) Katt. 1994
Origin: Argentina
Conservation status: Listed in
CITES appendix 2.
Etymology: The specific name "Bulbocalyx"
comes from Latin "bulbus" = bulb, tuber and "calix" = calix,
cup, for the funnel shaped flowers with narrowed mouth and spreading
perianth segment segments
Synonyms
- Echinocactus bulbocalyx Werdermann (Basionym)
Blüh. Kakt., p. 136, 1937
- Pyrrhocactus bulbocalyx (Werdermann) Backeberg
Die Cactaceae, 3 : 1565, 1959
- Neoporteria bulbocalyx
(Werderm.) Donald & G.D.Rowley 1966
Other names (Heterotypic synonyms):
- Pyrrhocactus marayesensis
(Backeberg) J.G. Lambert (Nom
inval.), Cactus d'Argentine, ed. 2: 265: 1998.
- Pyrrhocactus umadeave var. marayesensis
Backeberg (Nom inval.),,
Descr. Cact. Nov. 3: 13., 1963
- Neoporteria dubia
(Backeb.) Donald & G.D.Rowley 1966
- Pyrrhocactus dubius
Backeberg, Backeb. & F. M.
Knuth, Kaktus-ABC, 263, 415., 1935
- Pyrrhocactus megliolii
W. Rausch, Kakteen Sukk. 25
(10): 220, fig., 1975
- Neoporteria megliolii
(Rausch) Donald 1976
A
mature specimen h 15 cm, diameter 11 cm
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Cultivation: It is a
summer-growing species. Relatively easy to cultivate, but
it's extremely root
rot prone if kept in a non
ventilated place.
Requires a very fast draining drying soil;
water regularly in summer,
but do not overwater.
Needs
full sun exposure (or
light shade)
Good heat tolerance.
Propagation: Usually
propagated from Seeds
(seldom produces offsets) or grafting.
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