Discarding Isengard orcs from hand

[Bombadil]

If I use, for example, Gorgoroth Garrison (7C273), and discard an isengard orc from hand, can I stack that orc on Iron Fist of the Orc (6U64) (or any other of these isengard stacking cards)?
I know that when a card tells you to discard something it should be from play, but Im not sure if it is the same when a card is discarded. Last Days (12U71) and some more cards say "discarded from play"...

Thanks!

[TheJord]

All the stacking cards say if discarded by a regroup action, and as you say the default meaning is always from play.

[GarrisonofGondor]

 So in other words... NO

[Elessar's Socks]

The "from play" addition on some cards is probably for clarity.

[Bombadil]

  I was hoping I oculd use Larder + Scaffolding + Isengard Tender      

Thanks for helping 

[MR. Lurtzy]

I don't see why you can't use that combo.

[Bombadil]

Because larder discards from hand, so I wouldnt be able to stack on scaffolding when using it...

[MR. Lurtzy]

Where is it clarified that scaffolding only accepts minions from play?

[Elessar's Socks]

Here's the relevant section from the rulebook:

The default meaning of the word "discard" is "discard from play." Discarding from other locations (such as from your hand or from the top of your draw deck) is always specified.

Scaffolding doesn't specify a location, so it uses the default meaning. A similar example would be Plundered Armories responding only to weapons discarded from play.

[Vroengard]

otherwise it would be a bit unfair, doesn't it?!