Mammillaria deherdtiana ssp dodsonii
First description by Bravo, Cact. Suc. Mex. 15(1): 3 (1970) -as M. dodsonii
Body: stem up 3 cm tall and 4 cm diameter.
Roots: fribrous.
Sap: without latex.
Tubercule arrangement: 5 - 8
Tubercule:
Axil: naked.
Radial spine: 20 - 21, the lowest longest, to 20 mm long, needle-like white.
Central spine: 3 - 5 and 10 to 20 mm long with a reddish-brown colour and stronger than the radial, the form is straight or little curving.
Flower: Large and up to 4 cm with a 2cm long flower tube very distinct, colour is purple.
Fruit: Globose with 3 to 4 mm diameter, coulour is pale-green.
Seed: Black.
Flowering period in Cultivation (Europe): March, April.
Minimum temperature:
Habitat Substrate:
Geographic Distribution: from MEXICO in the state of OAXACA. Altitude 3.100 m.
Comments: Cultivation is more easy than for species deherdtiana. Organic substrate.
Bibliography:
John Pilbeam (1999) - Mammillaria The Cactus File Handbook - page 85.
Edward F. Anderson (2001) - The Cactus Family - page 414.
Synonymes:
M. dodsonii
M. deherdtiana var dodsonii
M. greenwoodii nom. nud.
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Photos containing "dodsonii" in caption, comment or name.
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