Mammillaria trichacantha subs. duwei
J. Mammillaria Soc. 40(1): 8. 2000 [Feb 2000]
Family
Cactaceae
Genus
Species
Mammillaria trichacantha subs. duwei
Author
(Rogoz. & P.J.Braun) Mottram
Chinese genus
乳突球属
Chinese name
-
Accepted
DescriptionEdit description
Central Spines
0-1 or 2 (occasiaonally 4). The long central spine is not present on all the clones, yellowish, hooked, to 8 mm long, pubescent.
Seeds
Blackish brown.
Description
Mammillaria duweiSN|8910]]SN|8895]] is a small solitary rarely offsetting plants that eventually forms tiny mounds.
Tubercles
Small, clavate 4-5 mm high, With a woolly axil and little hair.
Flowers
Funnel-form, less deeply set, yellowish/cream to light yellow, about 20 mm long and in diameter. Inner segments lanceolate, widely spreading, accuminate, style and stigma lobes greenish.
Blooming Season
Flowers readily, and for a long period from spring to the early summer.
Stem
Heads 3,5 to 6 cm in diameter, 2-4 cm high, dark green, soft, globoid, flattened-globose, to shortly cylindrical.
Radial Spines
28-36, acicular, thin, white, brownish at base, pubescent, 3,5-4 mm long, interlacing and densely wrapped against the body of the cactus.
Fruits
Light red to red, elongated.