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The flowers, from which it gets its name (from Latin flavus = yellow)
are an unusual greenish-yellow and contrast well with the body.
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Description:
Solitary or slowly clumping It has a very distinctive form, described by
some as almost pagoda-like.
Stem: Cylindrical grey-greenish and coated in a whitish bloom 2.5
cm in diameter,5 cm tall; conical tubercles with a rhomboidal base
Areoles: Small with white caduceus wool.
Root:
Napiform.
Spines: 4 to 6 up 30 mm long, the juvenile one are dark-brown,
the older one are greysh. They are spongy, flexible and are recurved
upwards.
Flowers:
Infundibuliform, light yellow-green up 2 cm in diameter.
Stylus pink with white
stigmas,
anthers yellow.
Blooming season: The flowers appear at the plants apex in succession
from spring to summer.
Fruit: Longly ovoidal 10 mm long, base dark green apex dark
brown.
Seed: Dark brown 1mm long.
Cultivation: Robust
species to cultivate.
Requires full sun and careful watering to
keep plant compact and low. It has a tap root, and watering it properly
is often difficult and tends to crack open or rot if over-watered.
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Cultivation and Mail Sale 
