仙居冻绿,浙江产长叶冻绿(鼠李科)一新变种
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摘要
描述了采自浙江仙居神仙居的鼠李属Rhamnus(鼠李科Rhamnaceae)一新变种:仙居冻绿Rhamnus crenata var.xianjuensis.其与模式变种长叶冻绿R.crenata var.crenata的区别在于叶片披针形、倒披针形或长圆状倒披针形,宽1.5~3(~4)cm,叶背中脉和侧脉疏被长柔毛,叶柄长2~3 mm.仙居冻绿与长叶冻绿的叶片长度、叶片长度与宽度比值统计显示两者差异极为显著;其叶背毛被与长叶冻绿、两色冻绿R.crenata var.discolor也存在明显的区别.
Rhamnus crenata var. xianjuensis,a new variety of Rhamnaceae from Zhejiang is described and illustrated. This new variety differs from R. crenata var. crenata in having leaf blades lanceolate,oblanceolate or oblong-oblanceolate,1. 5 ~ 3( ~ 4)cm wide,costa and lateral veins of abaxial leaf surface sparsely pilose,petioles 2 ~ 3 mm long. The statistical analysis on leaf length and length/width of R. crenata var. crenata and var. xianjuensis shows that the difference is extremely significant. The indumentum on abaxial leaf surfaces of R. crenata var. xianjuensis is distinguishable from both var. crenata and var. discolor.
Rhamnus crenata var. xianjuensis,a new variety of Rhamnaceae from Zhejiang is described and illustrated. This new variety differs from R. crenata var. crenata in having leaf blades lanceolate,oblanceolate or oblong-oblanceolate,1. 5 ~ 3( ~ 4)cm wide,costa and lateral veins of abaxial leaf surface sparsely pilose,petioles 2 ~ 3 mm long. The statistical analysis on leaf length and length/width of R. crenata var. crenata and var. xianjuensis shows that the difference is extremely significant. The indumentum on abaxial leaf surfaces of R. crenata var. xianjuensis is distinguishable from both var. crenata and var. discolor.
引文
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[2]陈艺林,周邦楷.鼠李科[M]//中国科学院中国植物志编辑委员会.中国植物志:第48卷第1分册.北京:科学出版社,1982.
[3]于慧,夏念和,胡晓颖.中国鼠李科植物的叶表皮微形态[J].热带亚热带植物学报,2011,19(1):16-25.
[4]MILLER P.The gardens dictionary[M].4th ed.London:Staflen and Cowan,Henrey,1754:517.
[5]于慧,叶华谷,夏念和.国产冻绿属的分类处理[J].热带亚热带植物学报,2008,16(4):366-369.
[6]OKADA M.Pharmacognostical studies on some species of the genus Rhamnus:part 6[J].Journal of Japanese Botany,1977,52(2):119-126.
[7]QUASDORF I.Pollen morphologischer Beitrag zur Kenntnis der verwandtschaftlichen Bezeihungen der Rhamnaceae-Gattungen Frangula Mill.,Oreoherzogia W.Vent,Rhamnus L.[J].Feddes Repert,1974,85(5/6):337-344.
[8]张玉龙,陈艺林.中国鼠李族花粉形态的研究[J].植物分类学报,1992,30(1):73-81.
[9]BOLMGREN K,OXELMAN B.Generic limits in Rhamnus s.l.(Rhamnaceae)inferred from nuclear and chloroplast DNA sequence phylogenies[J].Taxon,2004,53(2):383-390.
[10]SUESSENGUTH K.Rhamnaceae[M]//ENGLER A,PRANTL K.Die Natrlichen Pflanzenfamilien:2nd ed.Berlin:Dunker et Humboldt,1953:7-173.