Mammillaria geminispina

Mammillaria geminispina Haw., Philos. Mag. J. 63: 42 42 1824.;
 
 
 
https://08511630493324166816.googlegroups.com/attach/b5b9007492c79c2a/tn_IMG_2437.JPG?part=0.2&view=1&vt=ANaJVrF1w41qn_g933nBULa4_Nzd5xtkVxrwumn0OZFr1wOwH6PUQbtnx194XDH17KB9YxfyBd-5e0iRx3FWARAbgNaMbqB35Mae7b0ZU7xVHy-wBCDvgMU
https://08511630493324166816.googlegroups.com/attach/b5b9007492c79c2a/tn_IMG_2436.JPG?part=0.1&view=1&vt=ANaJVrGbkc9t6WvcDu5lyzPhTxTRflF6WEyeq7aMLS41kzgerpUmtKBZcVWpHJ4PsKLggyEPfT4F5zTvl0pwEp4FfodcUGiBJnLvVnfwn2VkiOKmutbnsWo

Mammillaria geminispina I believe!!
 
 
https://08511630493324166816.googlegroups.com/attach/9446073eef747147/Mammillaria-geminispina-Panchkula%20cactus%20gdn-2.jpg?part=0.2&view=1&vt=ANaJVrH3Pun5hNqhaBBOtIIdbJQ9e7aO7mxNCTdKrLqejjElYBY1P0_dtGOBsFnrH4Or8wBRhYtDbmLDQBwFUmBblRAkCvDblf255nL1-MjYG5VHtLoDD-4
https://08511630493324166816.googlegroups.com/attach/9446073eef747147/Mammillaria-geminispina-Panchkula%20cactus%20gdn-1a.jpg?part=0.1&view=1&vt=ANaJVrGKjCuBMFD_9C6Z70ZPOM6193NLObIqoKDZAKVvb2zjbNsYTz8rgQ0F6ZdUlK4HsxfJsV__shXg1TeU66TRJCUvKgUTcY-94SWPhzMuS9zH48ShloY

Mammillaria geminispina from Cactus Garden Panchkula: Mammillaria geminispina Haw., Philos. Mag. J. 63: 42 42 1824.
Plants with clustered stems up to 20 cm long and 8 cm thick covered with white wool, with tubercles arranged in spirals with needle-shaped 16-20 radial white spines up to 6 mm long and 2-4 central stouter brown-tipped up to 4 cm long spines; flowers carmine, up to 2 cm long. 
Native of Central Maxico 
Photographed from Cactus Garden, Panchkula on April 9, 2011
These are lovely, .., the small  mauve-pink to deep red flowers  sometimes look as if somebody stuck them on... but isn't it beautiful... they last a long time... as houseplants... 
  

References:
Comments