Mammillaria perezdelarosae subs. andersoniana W.A.Fitz Maur. & B.Fitz Maur.

국표에 없다.

Origin and Habitat: Mexico Northeast, Zacatecas, Municipio Via Garcia, Mexico.
Altitude : 2.000 m. above sea level.
Habitat: It grow among volcanic rocks. It is a critically endangered species with less than 1000 individuals surviving in habitat.

Description: Mammillaria perezdelarosaeSN|11894]]SN|11894]] v. andersonii is a marvellous tiny cactus distinguishable from the standard species for its smaller size, slower growth and straight central spines (not hooked). It is believed to be one of the most beautiful Mammillaria.
Stem: Solitary, globose to somehow elongated in cultivation about 2-(-5) cm tall and maybe 2,5 cm in diameter, it is one of those plants that grows much taller in cultivation in our light levels than it does in habitat, but this subspecies doesn't seem to share that tendency. Usually without latex.
Tubercles: Conical with rounded tips, 2 mm wide and long.
Axil:With some wool.
Radial spines: 50-63 about 4 mm long, symmetrically arranged, pectinate, aciculate, white to hyaline.
Central spines: One straight, ascending, dark brown or black (red-brown when young) with brownish to yellowish base.
Flowers: Funnelform, 6 mm long and 8 mm wide, shiny, pale yellowish (not pink) with pale brownish midstripe. It is not surprising to see them in flower at little more that 1cm across.
Fruit: Green, club shaped, 2 mm long and wide.
Seed: Brownish black, 1 mm long and 0.6 mm wide.

 

Mammillaria perezdelarosae subs. andersoniana (llifle.com)

 

https://youtu.be/qQVRMYvv-rQ?t=1982