Hi Froggy,
According to "The Aromatherapy Practitioner Reference Manual" by Sylla Sheppard-Hanger the following are what you might be looking for;
Chamomile, Moroccan/Ormenis
Chamaemelum mixtum also known as
Ormenis multicolis
O multicaulis
O mixta
O mixtum
anthemis mixta
Chamomile, Moroccan is a handsome plant, which grows between 90 to 125 cms high with very hairy leaves and tubular yellow, surrounded by white ligulets.
Chamomile, Moroccan is one of the more recent oils to appear on the market, and as such it does not have a long history of usage.
Chamomile, Moroccan is pale yellow to brownish yellow mobile liquid with a fresh-herbaceous top note and a sweet rich-balsamic undertone. It blends well with Cypress, Lavender, Lavandin, Vetiver, Cedarwood, Oakmoss, Labdanum, Olibanum and Artemisia Oils.
Source of Oil: Morocco, Flowers
Chamomile, Roman
Chamaemelum nobile
Anthemis nobilis
Roman Chamomile is a small perennial herb, up to 25cm high, with a hairy stem. It has feathery pinnate leaves, daisy white flowers which are larger than those of German Chamomile.
Roman Chamomile has hints of sweet, fruity apple among bitter, herbaceous undertones and warm, flowery, grassy top notes. It blends well with most other florals and herbs, and also with Bergamot, Frankincense, Verbena and Nutmeg.
Source of Oil: France, Flowers
Chamomile, German/Blue
Marticaria chamomilla
Matricaria recutita
German Chamomile is an annual herb with delicate feathery leaves and simple, daisy-like white and yellow flowers on single stems. The viscous, inky-blue Essential Oil is steam-distilled from the flower heads.
German Chamomile has an intense odour that some people find overwhelming until it is diluted. The fragrance has a strong, sweet green herbal top notes with an almost fruity but slightly bitter undertone. It blends well with most other florals, citruses and herbs, and also with Patchouli, Frankincense, Petitgrain and Benzoin.
Source of Oil: France, Flowers
Both the Roman and German are regularly used in Aromatherapy and are readily available. The Moroccan chamomile is not taught by ITEC and less readily available. The only other Chamomile oil is CHAMOMILE, CAPE (Eriocephalus punctulatus), which is in-fact not related to the above. It's called Cape Chamomile due to it's Chamazulene content which is the blue chemical found in German Cham. This plant is found in Cape Town, South Africa.
I hope this clarifies things for you. Some websites that might be of use to you are;
http://www.shechina.co.uk/
http://www.ifparoma.org/
http://www.aromamedical.com/index.html
http://www.users.globalnet.co.uk/~nodice/
http://www.fragrantearth.com/
http://atlanticinstitute.com/authors.html
All the best.
Cheers, Sue