我經常聞到九重葛有香味，好聞芳香味，但懂九重葛者知道，目前只有國外一樹狀品種(arborea--18基本種之1)號稱具有香味，國內沒有具香味品種，但我確實在一盆嫁接幾種Mrs.Eva品系的混接盆上同時開的花，每一品種均聞到不弱的芳香味，不是一天，是天天持續不短日數。---->引起我探究興趣!!
先看看這兩篇
1.花如何吸引授粉者:
http://120.107.166.105/bio91/8723028/www/new_page_36.htm
2.
cytogenetics of cultivated bougainvilleas( II) :
http://www.new.dli.ernet.in/rawdataupload/upload/insa/INSA_1/20005b7e_498.pdf
**
1.洋文這篇清楚的介紹九重葛有蜜腺/花蜜及國外各地授粉昆蟲
2.第一篇清楚介紹顏色/香味/花蜜如何吸引昆蟲
3.九重葛的花苞不是花，中心管狀的小花才是花
4.昆蟲授粉要先有香味/顏色吸引它，再有甜點(蜜)引它頭/口器深入(針對長管花)
5.Mrs.Eva品系具結籽能力，亦可見到昆蟲拜訪，理應有蜜腺花蜜
6.香味來源可能是花瓣或蜜腺，要聞到香味，理應等到小花展開後
您說我聞到香味合不合理???
1.但我無法解釋為何只有我聞到，二羊兄家的聞不到，或我家同品種為何不是每盆均可聞到!!
2.能否聞到與小花打開與扭轉閉口(短短幾天)有無關係? (我那盆有將所有花管剪斷)
3.可結籽有蜜腺推論，不結耔(不可育)品種就一定沒花蜜? 應不一定，因不可育品種的花上亦常見昆蟲光顧，是否可育另有它因!
4.如其他品種也有花蜜那為何沒聞到香味? (戶外/花管閉鎖/蜜腺不發達/有味不濃...?)
5.葉子就沒香味? 因我也曾在它品種葉子聞到!
待解!
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Google : bougainvillea fragrance or scent
0.http://wiki.answers.com/Q/Does_the_bougainvillea_have_scent
"Most varieties of bougainvillea have little or no scent. Those that do smell very slightly like hot honeysuckle"
1.http://www.streetdirectory.com/travel_guide/194559/gardening/bougainvillea_for_your_backyard.html
"Bougainvillea has a nice fragrance which is similar to that of the Honeysuckle plant. "
2.http://www.bgi-usa.com/fragrant-bougainvillea-arborea/
"I find myself smelling bougainvillea again, but this time enjoying a scent similar to honeysuckles. I got my wish after all! Unbeknownst to many, Bougainvillea ‘Arborea’ is the only known variety that is fragrant. I think it’s a wonderful variety for its lack of thorns, bushy habit, mass flowering, and the best part – fragrant blooms!"
3.http://www.warrenparknursery.com.au/library/bougainvillea/none/araroma
"Fragrant and thornless. This is the ultimate screening bouganvillea. Extremely dense growth makes it a great screening plant. Has a sweet scent like a jasmine."
4.http://www.gardenguides.com/113594-care-bougainvillea-flower-plant.html
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