Echinocereus dasyacanthus

[Weiser]

Echinocereus dasyacanthus is a yellow flowered cactus from NM, TX and Northern Mexico. It's cylindrical stems grow in multi-headed mounding clusters, covered in very dense short ridged straw colored spines, that tend to vary slightly in tone from year to year. This gives the plant horizontal banding in muted colors.  Hardy to 0 F(-17C) but very rot prone and requiring sharp drainage with only occational modest watering.
Echinocereus dasyacanthus and Echinocereus triglochidiatus are the parent species for the hybrid Echinocereus x lloydii (discussed in the Topic: Echinocereus triglochidiatus complex)
http://nargs.org/smf/index.php?topic=517.0
  
http://plants.usda.gov/java/profile?symbol=ECDA
http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242415245

A plant I received last year from a Reno grower.

[Hoy]

A huge flower for a small plant!
I know what to do when I get rich (win the first prize in a lottery):
I'll build a big greenhouse to grow cacti and other succulents

[cohan]

Another species with a great range of forms, spine colours etc.. this one would be a purely indoor plant for me....