Haageocereus ID Help

[Minime8484]

Another mystery plant I received recently.

This one was provided to me originally ID'd as a Loxanthocereus (=Cleistocactus), but based on the flower that opened last night for the first time, it is clearly a species of Haageocereus.

Haageocereus sp (2014-July17).jpg (30.83 KiB) Viewed 2433 times

Haageocereus sp (2014-July18).jpg (51.33 KiB) Viewed 2433 times

Anyone have any idea which Haageocereus this might be?
I know they are sometimes virtually impossible to ID precisely, but I figured someone might recognize some specific identifying feature in my plant!

Any help would be appreciated!

[phil_SK]

The two sprawlers are H decumbens and H. tenuis. Gut feeling is that it's H. tenuis. If i get the chance tomorrow I'll have a look at the article in Bradleya from a few years back to see if i can work out the difference between the two.

[CactusFanDan]

The first name which popped into my head upon seeing it was H. tenuis as well. Interpret that how you will!

[Tony]

I think its this one.
http://www.cactiguide.com/forum/viewtop ... +decumbens" onclick="window.open(this.href);return false;