Hi Digpati,
Im interested. Does the Livistona jenkinsiana produce an edible fruit? What is it like? From this:
http://davesgarden.com/guides/pf/go/63669/ it looks like it might be a little too cold here for this one (we get down to 3 C/27 F), what do you think?
I did a little looking into the others and I thought I would post some of what I found for anyone who might be interested
From
http://www.boku.ac.at/diebodenkultur/volltexte/band-54/heft-1/paudel.pdf Lapsi (Choerospondias axillaris) is a large, deciduous, edible native fruit tree of the family Anacardiaceae. Native to Nepal hills (8501900 m asl), the tree has also been reported
from India, China, Thailand, Japan and Vietnam. Nepal is unique for processing and use of Lapsi fruits. Fruits are rich in vitamin C content (SHAH, 1978), and are consumed fresh, pickled and processed for preparing a variety of sweet and sour, tasty food products locally called as Mada and
candy. The candy products are usually prepared from the mesocarp of ripe fruits and are popular among women, children, trekkers and tourists in Nepal.
Here is some info on the Pomsi an avocado relative grown between 4000 and 8000 foot elevations:
http://books.google.com/books?id=OjLRDa3_BAkC&pg=PA74&lpg=PA74&dq=Machilus+edulis+fruit&source=bl&ots=fiAeulJHMN&sig=_vES0tur-mJjmqs9wQCeA7UuivE&hl=en&sa=X&ei=aHukUsPyF-ioyAGNzoGwCg&ved=0CCsQ6AEwAA#v=onepage&q=Machilus%20edulis%20fruit&f=falsePhoebe cooperiana is another avocado relative but I cant find much about it.
Ill send you an e-mail. Thank you.
Regards,
Sven