@BigSur ... you mention the Durban terpenes ...
I have a cross made from Sensi's Durban and Bushmans (a Ciskei) from Origin. I've been smoking a sample for the past couple days and there's something very nice about it - a serene, kind, secure buzz. But I also can't identify one of the terps I'm getting. There's some spice in it I can't name. As close as I've come is the skin of a ripe pear? Something earthy/sweet with a nose tingle.
So what are you getting from your Durban Poison cross?
Ah yes, the Durban buzz. Durban Poison is moderately high in THCv, a cannabinoid. THCv has a soothing upper high to it that blocks the THC receptors for about 30 minutes, and then you get the sneaker high. I always want to smoke more Durban, but always wait 30 minutes before smoking more. The THCv then acts like amphetamine, but without jagging you like caffeine or Dexedrine. Also Durban does not give me brain freeze, like when smoking Kerala ganja. Nor does it have the psychedelic or racy high of Punto Rojo Colombian. Though Punto Rojo has a pretty short lived high to it. Durban is more naturally uplifting and has no paranoia to it. The only downside to Durban is that I cannot smoke it at night, or I stay up too late. Its a good stay up too late high though, and my mind is blistering with cool thoughts and ideas. So this is morning weed. Wake 'n bake. GDP is my night time weed and puts me to sleep. GDP is also good for sex. Durban is not. GDp puts me in the mood and I can focus on sex. Durban has me drifting off to other places. For ADD/ADHD, Durban is the ticket. Better than amphetamines.
As for Durban Poison terpenes? I get anise smells from my Durban crosses and landraces. Generally most compare the classic Durban Poison terpene smell to anise, a spice from the seed of the licorice plant. Pear skins are similar in smell to anise from all the tannins that they have, and they smell like Limonene, a terpene that is high in Durban Poison. Anise seed also has terpenes. Anise may have a compound terpene profile that smells the same as Durban, but from a different combination of terpenes typically found in Durban Poison. Analytical 360 lists Durban Poison as highest in Limonine and is also high in Linalool and Humulene terpenes. Then much smaller amounts of Caryophyllene, Myrcene, and alpha-Pinene. Other sites list Durban Poison as having the highest amount of Terpinolene, then a lesser mix of Humulene, Myrcene, Limonene, alpha- & beta-Pinene, Linalool and Caryophyllene. So the terps are pretty much the same, but the amounts vary. When you harvest and where/how you grow likely affects the terpene profile, with Limonene coming on earlier and Humulene coming on later in ripening. Terpenes (or more correctly, terpenoids) are hydrocarbons built by connecting together the same basic molecule of isoprene (isopentenyl pyrophosphate). Different amounts of isoprenes connected in chains or rings result in different smells to us humans. Limonene, pinene, linalool and myrcene are monoterpene and fairly simple, whereas Humulene is a sesquiterpene and more complex. Myrcene generally is dominat in most Cannabis strains, and gives it that classic smell. High levels of Myrcene is associated with 'couch-lock' in indica strains. Terpenes/terpinoids are strong medicine, regardless of what the DEA claims. They greatly affect the high in weed as well.
Some terpene profiles. Note that these are highly subjective and can vary greatly in different combinations.
Limonene smells like citrus and pome fruit skins
Pinene smells like pine
Linalool smells like lavender
Myrcene smells like hops in beer, mangoes or thyme
Caryophyllene smells like black pepper, cloves, or cinnamon
Humulene smells like wood and earth
Terpinolene smells like nutmeg, tea, or cumin