Photo: Mammillaria hahniana / Old Lady Cactus The previous gaps in the wool from the first harvesting of... http://t.co/U6d6mHUwMV

— Dustin Miller (@zoopunkwild) 2013.7.12

Photoset: Focus: Gymnocalycium saglionis, Echinocactus grusonii, Mammillaria hahniana, and Echinopsis... http://t.co/0unRCfQRf7

— Dustin Miller (@zoopunkwild) 2014.4.18

@alessandro_lora #Mammillaria hahniana

— Alessandro Lora (@alessandro_lora) 2014.5.14

หิ้วกลับมาให้เป็นเพื่อนซาโบรุจัง ต้นนี้พันธ์ุ mammillaria hahniana old lady เดี๋ยวพรุ่งนี้ค่อยย้ายบ้านกันนะ (^-^) http://t.co/HdUNS1OSh7

— Aarÿ_on_Twitt (@shengko11) 2014.6.12

Photoset: Mammillaria chionocephala and Mammillaria hahniana / snowy tops http://t.co/4bo2hcLlOs

— Dustin Miller (@zoopunkwild) 2014.10.30

Photo: Mammillaria hahniana / Old lady cactus http://t.co/qy3qepJ9RS

— Dustin Miller (@zoopunkwild) 2015.4.9

"Era un sueño de un cactus solitario" (Eugenio Sanchez) (Mammillaria hahniana - cactus endêmico no México) https://t.co/sBlyPKyRFO

— Fátima Oliveira (@oliveirafatima_) 2015.11.3

https://t.co/jysj7dXPFM - Mammillaria hahniana. The #morefunz page https://t.co/EgoVzh1Rbi

— MoreFunz (@MoreFunz) 2016.5.24

Photoset: I finally got the Mammillaria hahniana and Mammillaria mystax into proper pots. They still look... http://t.co/53bXUBS2E8

— Dustin Miller (@zoopunkwild) 2013.9.3

@spina_c マミラリア=寒さに強いではないんですね。よく冬でも外で放置玉翁や金洋丸を見るので大丈夫なのかと思いました。

— スカイセンサー (@skysensor5800) 2012.2.6