Photo: Mammillaria longimamma update - fully open tomorrow. http://t.co/FeO8XlFW

— Dustin Miller (@zoopunkwild) 2012.8.23

Photoset: Mammillaria longimamma M. longimamma really exemplifies the diversity of the genus (in terms of... http://t.co/iiUFppCyQJ

— Dustin Miller (@zoopunkwild) 2013.6.26

Mammillaria Longimamma Cactus  .:: DannySaba.com ::. http://dannysaba.com/viewArticle.php?article_id=12 …

— dannysaba.com (@dannypsaba) 2011.2.12

Photo: Mammillaria longimamma / finger cactus http://t.co/elVK4F5QGm

— Dustin Miller (@zoopunkwild) 2015.7.5

Photoset: Mammillaria longimamma http://t.co/2xvVoddPry

— Dustin Miller (@zoopunkwild) 2014.8.10

Photo: Mammillaria longimamma As this plant continues to expand with new growth, some of the blooms are... http://t.co/0hmUTF8n3p

— Dustin Miller (@zoopunkwild) 2014.7.26

Photoset: Coryphantha hesteri and Mammillaria longimamma In the middle of summer buds form and flowers bloom... http://t.co/jBwJmjeWac

— Dustin Miller (@zoopunkwild) 2013.7.26

Photo: Finally caught them fully open - and just as another rain shower begins. Mammillaria longimamma has... http://t.co/TmbrH65R

— Dustin Miller (@zoopunkwild) 2012.8.26

Photo: Look at what the Mammillaria longimamma, or Long Nipple Cactus, has been up to while I was gone! http://t.co/LLXSpuaA

— Dustin Miller (@zoopunkwild) 2012.7.19

mammillaria_longimamma by odino cepernich

— Manju Gautam (@ManjuGautam1962) 2014.9.3