#!/usr/bin/perl
use warnings;
use strict;

my %denovo;

while (my $line = <DATA>){
    chomp $line;
    if ($line =~ /([^,]*)$/){
        my $name = "$1";
        print "name is $name\n";
        $denovo{$name} = $line;  # Quotes not needed.
    }
}

print "hash denovo is:\n";
while( my( $key, $value ) = each %denovo ){
    print "$key: $value\n";
}

__DATA__
no comma
comma, in the middle
comma at the end,

previous line was empty