Great to join your forum.

I have a fig tree that is unlabeled and I would like to figure out what it might be. It is growing in the SF Bay area (Novato, CA) bearing fruit even under the heavy shade of a pine tree.

From the outside it is a long necked/pear shaped with a green skin. Breaking it open, I was really impressed with the very dark purple, nearly black flesh, with a intense thick, jam texture and slight berry flavor.

I have searched various references, including your great web site, and think it might be the same fig discribed as San Pietro.

Andy Mariani's little fruit book has suggested San Pietro may also be known as the 'blood fig'. But another description say the flesh is only pink.

Any comments as to its possible identity?

I can send dormant cuttings to anyone who wants to give it a try. For now I am calling it Eve's Black Cherry fig.

Welcome to the forum!
Would you be able to post pictures of your fig?  It would make it easier to form an opinion. 
As for descriptions...  Where a fig is grown can affect everything.   

Welcome to the Forum.

I don't know that I have seen a fig with a green exterior and a purple interior. There are a number with green exterior and red (light red, bright red, or dark red) interiors, but none that I would have called purple.

Check pix at Figs4Fun, particularly of Adriatic, Stella, Calvert, Danny's Delite, Strawberry Verte, Verte, and Desert King

Here is San Pietro from UC Davis,and was producing a few fruits last year.
This year it did not.
The green fig is San Pietro.
It has a leaf with 5 slender fingers,but variable sometimes with 2 tumbs,sometime Three lobes.It show fig Mosaic on many leafes.
I am very interested to trade one of my best against yours.

Thanks for your replies.

No pictures taken this year, I will have some next September.

Herman2's pictures from Davis shows similar shape yet the interior is too light.

The flesh color I remember is at least very dark red, if not purple.

Some of Jon's suggested varieties don't seem to match from pix and descriptions (Adriatic, Calvert, Danny's Delite, Strawberry Verte, Verte, and Desert King.) But 2 seem to be close-

San Pietro from the only photo on the figs4fun descriptions is close to the dark density of flesh color and general shape and skin color:
http://members.cox.net/figs4fun/pix/fp006-15.jpg

San Pietro's long necked shape matches as profile 'N' on the 'forms of fig fruits' from Condit's 1941 article in Hilgardia, "Fig Characteristics Useful in the Identification of Varieties": (Ray Givan's web site- identifiying fig varieties page)
http://home.planters.net/~thegivans/id-figs.html

Also, Stella, from One Green World has the right shape and dark red flesh color
http://www.onegreenworld.com/product_info.php?cPath=1_27&products_id=522

I am leaning toward Stella, as it is commonly available through One Green World. San Pietro seems more rare an less likely to be planted here- but not impossible.

I will call this fig "Eve's Black Cherry" until next season when I can send out pictures and perhaps take some up to Wolfskill- to ask and compare with their collection.

What would be the best way to proceed with labeling of this variety?

By the way:San Pietro from UC Davis have Berry flavor,in the line with Adriatic and Col de Dame but of less Intensity.
I think you shoud keep the name you was given till you go yourself to UC Davis and taste one of their SP,fruits,to make sure it is the same.
Interior color varies with climate and place where it is grown!!!
Stay well