The basic answer is that you can't. glob() can be cool thing, but it's pattern matching capabilities are primitive.

my @EnvListFile=glob("$HOMEDIR/data/EnvList.*");
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would work. If you want something more sophisticated than that, you need grep. regex can be used in a grep, but not a glob().

open DIR, "$HOMEDIR/data/EnvList" or die $!;
my @EnvListFile = grep{ -f "$HOMEDIR/data/EnvList/$_"
                         and
                        /\d+$/ } readdir DIR; #perhaps???
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moritz's answer is fine also.