Bittersweet guide

American vs Oriental Bittersweet
American - orange capsules in terminal panicles, one seed in fruit, uellow pollen on flowers, involute (scrolled) leaves when unfurling
Oriental - yellow capsules located along length of stem (axillary cymes), 5 or more seeds per fruit, pollen white, conduplicate (folded in half) leaves when unfurling

https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/fsbdev3_017307.pdf?sfns=mo

A different American Bittersweet guide
This states 1-2 seeds per section of fruit. Pictures comparing male and female flowers
https://www.friendsofthewildflowergarden.org/pages/plants/bittersweet.html

A different oriental Bittersweet guide says 3-6 seeds per fruit (2 per valve)
http://climbers.lsa.umich.edu/?p=199

Good example of American Bittersweet in bloom
https://www.inaturalist.org/observations/46338410

Interesting article on the introduction of Oriental bittersweet and hybrids
https://arboretum.harvard.edu/stories/untangling-the-twisted-tale-of-oriental-bittersweet/

Another article on hybrids - needs a library login to read
https://www.jstor.org/stable/3878246?seq=1

Publicado el enero 7, 2020 02:01 TARDE por aphili8