Malacocarpus sellowianus
Cact. Hort. Dyck. (1849) 25 1850
Family
Cactaceae
Genus
Species
Malacocarpus sellowianus
Author
Salm-Dyck
Chinese genus
-
Chinese name
-
Primary
Accepted
DescriptionEdit description
Habit
Usually solitary.
Central Spines
0 or 1, slightly heavier but not very different from the the radials.
Seeds
1 mm, long, black.
Description
Parodia sellowiiSN|20106]]SN|20106]] best known asvery woolly stem apex. It is a widespread, extremely variable species that has received numerous unnecessary names (at least 120), representing no more than local phenotypes.
Note
When the plants become older they look quite different from the juvenile forms, and this is evident when we can observe a seedling growing next to an older plant - the younger plant is smoother and the older plants have ribs and tubercles - one would almost think they were different species.
Flowers
Lemon yellow with glossy petals (sometime shaded with pink), up to about 4-5 cm in diameter, and standing near the top, decorated with about 8 to 10 red pistil lobes which emphasize the yellow of the petals. The buds are tomentose.
Blooming Season
They bloom annually around July.
Ribs
(12-)16-18(-22), at maturity well marked, shallow more or less sharp, with scarcely prominent chinned tubercles. The crest of the ribs typically turns a purple red colour in full sun.
Stem
Broadly orbicular flattened and growing partly underground, but the plant's stem in cultivation is usually globular or ovoidal and aerial, up to 20 cm tall, 15 cm in diameter, bright glossy green, dark green or grey-green. The apex is depressed and filled with whitish-grey wool.
Radial Spines
4 to 10 (-12), yellowish, sturdy, about 20 mm long, curved down or backward.
Fruits
Fleshy reddish to purple, about 10 mm long.
Areoles
Well spaced, woolly, recessed, 15-20 mm in diameter.