Help debugging 404 from cherrypy.tree.mount()

I am using CherryPy-5.3.0, mod_wsgi-4.4, and apache 2.4

My .wsgi file has a get_app() function to instantiate application

This always does the right thing, and I get a response.
def get_app(config=None):
    return cherrypy.Application(Root(), script_name=None, config=conf)
application = get_app(config=conf)

I am trying to migrate from cherrypy.Application to cherrypy.tree, so that 
I can have several mount statements.

This always shows a 404, but I see no python errors, and Apache shows the 
proper request.
def get_app(config=None):
    cherrypy.config.update(config)
    cherrypy.tree.mount(Root(),script_name='' ,config=config)
    return cherrypy.tree
application = get_app(config=conf)

I have tried to minimize the extra information above, to keep this short.  
Below I will show my full wsgi file and apache config.

--------------------------
myproject.wsgi BEGIN
--------------------------
import os
import sys

# Apache base for the app
here = os.path.dirname(__file__)

# Activate virtualenv
activate_this = os.path.join( here, 'venv', 'bin','activate_this.py')
execfile(activate_this, dict(__file__=activate_this))

# Add to python path 
sys.path.insert(0,here)

# Not sure about this one
sys.stdout = sys.stderr

# Time for pie
import cherrypy

cherrypy.config.update({'environment': 'embedded'})

@cherrypy.popargs('name')
class Root(object):
    @cherrypy.expose
    def index(self, name):
        return 'Hello {}'.format(name)

conf = {
    '/': {
        'log.access_file' : os.path.abspath(os.path.join( 
os.path.dirname(__file__),'logs','access.log')),
        'log.error_file' : os.path.abspath(os.path.join( 
os.path.dirname(__file__),'logs','error.log')),
        'tools.staticdir.root' : os.path.abspath(os.path.dirname(__file__)),
        'tools.response_headers.on': True,
        'tools.response_headers.headers': [('Content-Type', 'text/plain')],
    }
}
def get_app(config=None):
    # This Works
    #return cherrypy.Application(Root(), script_name=None, config=conf)
    # This Fails
    cherrypy.config.update(config)
    cherrypy.tree.mount(Root(),script_name='' ,config=config)
    return cherrypy.tree

application = get_app(config=conf) 
--------------------------
myproject.wsgi END
--------------------------
--------------------------
Apache config BEGIN
--------------------------
        WSGIScriptAlias  /cherrypy 
/var/www/localhost/wsgi/project_cherrypy/myproject.wsgi
        <Directory "/var/www/localhost/wsgi/project_cherrypy">
            AllowOverride None
        Options None
        Require all granted
        </Directory>
--------------------------
Apache config END
--------------------------

Calling it:
    http://localhost/cherrypy/joe/

Response when I use cherrypy.Application()
Hello joe

Logs when I use cherrypy.Application()
==> /var/log/apache2/error_log <==
[Mon May 02 21:11:34.569663 2016] [wsgi:info] [pid 19923] [client 
::1:51401] mod_wsgi (pid=19923, process='', 
application='localhost|/cherrypy'): Loading WSGI script 
'/var/www/localhost/wsgi/project_cherrypy/myproject.wsgi'.

==> /var/log/apache2/access_log <==
::1 - - [02/May/2016:21:11:34 -0700] "GET /cherrypy/joe/ HTTP/1.1" 200 9

==> logs/access.log <==
::1 - - [02/May/2016:21:11:34] "GET /cherrypy/joe/ HTTP/1.1" 200 9 "" 
"Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0"

Response when cherrypy.tree.mount()
404 Not Found 

The path '/cherrypy/joe/' was not found.


Logs when I use cherrypy.tree.mount()

==> /var/log/apache2/error_log <==
[Mon May 02 21:15:06.429073 2016] [wsgi:info] [pid 18153] [client 
::1:51425] mod_wsgi (pid=18153, process='', 
application='localhost|/cherrypy'): Reloading WSGI script 
'/var/www/localhost/wsgi/project_cherrypy/myproject.wsgi'.

==> /var/log/apache2/access_log <==
::1 - - [02/May/2016:21:15:06 -0700] "GET /cherrypy/joe/ HTTP/1.1" 404 745

==> logs/access.log <==
::1 - - [02/May/2016:21:15:06] "GET /cherrypy/joe/ HTTP/1.1" 404 745 "" 
"Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0"

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