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?????????????????????????????1.?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????档

?????????Di??n J?? G?? Ch??n?? Sh??n

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????????????????Alstonia yunnanensis Diels

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??????????????????1-3m??????????????????????????????3-5??????????????????????????????????????λ????????Σ????????????Ш?Σ???????6-18.5cm????1.3-4.5cm?????????????????????????汻??????????估???????????塣????????????????????????????ɡ????????????????????Σ????1.5mm?????汻??????????????????????????????????????????1-1.3cm???в????????????????汻????????????Σ???2-6mm????1-3mm?????????????????в??????????Σ????????2.5mm???????1.5mm???????????6mm???????????????2?????????2???????????????????????u???2????????????Σ???????????3-5cm??????4mm?????????????????????У????????????????3-6???????7-11???

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????????????????1100-2400m???????????????С?

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?????????????? ????????Σ????????????з??,??10-25cm?????1??5-3cm?????氵?????????????????????????????????????????????????????????????????ζ??????г???1mm??б?????????6-8mm??????????????????????С?????????????貿?С???п?????????????????????????????????貿?п????????????????????????????????????????????????Σ??????????ζ??

???????????????????reserpine??[1]?????к?????????vellosimine???????????sarpagine??[2]??????????????????perakine?????????????normacusine?? B????????????tetrahy-droalstonine???????μ?vinorine??[3]?????????lochnerinine????11??????-19-??????????11??methoxy??19??hydroxytabersonine??,α?????????pseudoakuammigine????????????picrinine???????????????????-3??4??5-??????????????????deacetylpicraline-3??4??5??trimethoxybenzoate?????????corynanthine????????????yohimbin????17-?????????????17??acetylsarpagine????6-???????6??episarpagine????????3??4??5-??????????????????methyl-3??4??5??trimethoxycinnamate??[4]??