When derived from natural resins it is most often created out of labdanum.
From the en.wikipedia.org
Naturals like ambrette seed, labdanum and angelica root can also mimic these rarely used ingredients.
From the sfgate.com
With its distinctive melange of coriander, syrupy tuberose, wild berries, cinnamon and a fragrant resin called cistus labdanum, Poison packs a punch.
From the express.co.uk
There's an Italian accent to this woody scent thanks to a lavender top note and base of labdanum, the resin of a shrub that grows in Mediterranean regions.
From the denverpost.com
This gorgeous blend of suede, cassis, labdanum and musk notes, by high priestess of perfume Lynda Pilkington, is just as opulent as the price tag.
From the independent.co.uk
The nostalgic notes of violet, rose and jasmine filled her memories before she discovered that the more esoteric aromas of labdanum, hemlock, amber and woodsmoke were part of her memory bank as well.
From the sfgate.com
More examples
A dark brown to greenish oleoresin that has a fragrant odor and is used as a fixative in perfumes; obtained as a juice from certain rockroses
A soft blackish-brown resinous exudate from various rockroses used in perfumes especially as a fixative
Labdanum is a sticky brown resin obtained from the shrubs Cistus ladanifer (western Mediterranean) and Cistus creticus (eastern Mediterranean), species of rockrose. It has a long history of use in herbal medicine and as a perfume ingredient.
An aromatic gum that originates from the rockrose bush (genus Cistus). The sweet woody odor is said to mimic ambergris, and can also be used to impart a leather note.