Sedum

HUMIFUSUM Rose, 1911

Distribution : Mexico (Querétaro)

 

Description (according to IHSP, 2003) :

Minute perennial herbs with short stoloniferous rootstock and many small branches forming a dense moss-like carpet.

Leaves densely imbricate, obovate to nearly orbicular, obtuse, strongly ciliate at the margins, flattened but fleshy, 3 – 4 mm, flowering branches erect, slender.

Flowers solitary, 5-merous, sessile, sepals basally free, shortly spurred, slightly unequal, leaf-like, strongly ciliate at the margins, very thick, 2 – 3 mm, petals nearly free to the base, subovate, subobotuse, bright yellow, 6 – 10 mm, widely spreading.

Cytology : 2n = 68, 70, 136

 

 

Plant in habitat, Querétaro, Mexico :

 

Photos Gerhard Köhres


Plant in cultivation :
Photo Margrit Bischofberger
Photo Stefan Neuwirth

Some remarks by Rudolf Schulz in Asran, Vol.1, No. 4, Aug. 1991 :

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