Ambrette seeds come from the plant Hibiscus Abelmoschus. The essential oil is produced from the seed.  Also available is a solvent extraction or concrete, the absolute and also a tincture extract.  The material blends excellently with sandalwood, rose and neroli. Ambrette seed is known for its "exhalting" effect on perfume. 

Amyris oil is steam distilled from the wood of the Amyris Balsamifera tree, also called West Indian Rosewood.  It's odor is woody and sweet with peppery top note. 

Not often heard of in countries other than India and Japan. The essential oil is steam distilled from the fruit or seeds of a wild dill. The interesting thing is that the odor is different to the european dill and the american dill. The oil of Anethum Sowa is more parsley like compared to the european and us versions that is more like caraway. 

Ref: Steffen Arctander; Perfume and Flavors of Natural Origin 

Angelica root angelica archangelica 

This is produced by a two step process. First the root is broken down or ground and then extracted using hexane to produce a concrete. This is further extracted by alcoholic distillation. It has a musky woody odor that is heavy and sweet. It is earthy and also has a curious animalic note.  

usually refers to fecal, leathery and fur-like scents, such as hyraceum (hyrax/Africa Stone), ambergris, costus, nargarmotha, patchouli and civet; can have some connection to indolic botanical materials such as jasmine

Anise oil used in perfumery is extracted from the star anise. The oil usually comes from Poland or Russia. Funnily enough a lot of people say it has a licorice scent but this is due to it being used as a favouring for licorice (in the same way that people say vanilla has a chocolate smell) 

Ref: Steffen Arctander; Perfume and Flavor Materials of Natural Origin

the inability to smell

Araucaria is also named the Monkey puzzle tree. It is native to the south pacific. The essential oil which is solid at room temperature is steam distilled from the wood. The colour is a very pale yellow green colour. The odor is a delicate and clean woody odor. Steffen arctander describes it thus: "It's odor is delicately woody, but also rich and sweet (a rare combination) almost floral like nerolidol or cabreuva oil. It has notes in common with amyris oil, bois de rose, copaiba, good guaiacwood oil, and the sesquiterpene fractions from Java type citronella oil." 

Arnica is usually associated with herbal medicine but its oil has use as a perfumery material also. The oil is steam distilled from the flowers and it is difficult to procure. 

Country of origin is usually Germany, Belgium or France. 

It is described as a herbaceous tea-like and non floral note.

Ref: Steffen Arctander; Perfume and Flavor Materials of Natural Origin.