文档介绍：实验一:裸子植物植物检索表编制粗榧南方红豆杉北美红杉短叶罗汉松侧柏柏木扁柏金叶水杉柳杉雪松黑松金钱松龙柏池杉落羽杉银杏水杉定距式检索表1、叶扇形,叶脉二叉·········································银杏GinkgobilobaL、1、叶非扇形,叶脉非二叉状2、有肉质假种皮3、雄蕊具2花药······短叶罗汉松Podocarpusmacrophyllus(Thunb、)D、Donvar、maki(Sieb、)Endl、3、雄蕊具3——9花药4、胚珠2枚························粗榧Cephalotaxussinensis(Rehd、etWils、)Li4、胚珠1枚····南方红豆杉Taxuschinensis(Pilger)Rehd、var、mairei(LemeeetLevl、)ChengetL、K、Fu2、种子无肉质假种皮5、球果的种鳞与苞鳞离生6、叶针形,2,3或5针一束·····················黑松PinusthunbergiiParl、6、叶条形、稀针形,非束生7、球果当年成熟···········`··金钱松Pseudolarixamabilis(Nelson)Rehd、7、球果翌年成熟·····················雪松Cedrusdeodara(Roxb、)G、Don5、球果的种鳞与苞鳞合生8、种鳞均螺旋状排列(罕对生)9、叶对生10、叶子金黄色·············金叶水杉M、glyptostroboides‘GoldRush’10、叶子绿色·····````水杉MetasequoiaglyptostroboidesHuetCheng9、叶螺旋状排列11、常绿乔木12、叶二型··········北美红杉Sequoiasempervirens(Lamb、)Endl、12、叶非二型·······柳杉CryptomeriafortuneiHooibrenkexOttoetDietr、11、落叶乔木13、树皮黑褐色············池杉TaxodiumascendensBrongn、13、树皮棕红色········落羽杉Taxodiumdistichum(L、)Rich、8、种鳞交互对生或轮生14、种鳞肉质·······龙柏Sabinachinensis(L、)Ant、'Kaizuca'14、种鳞木质15、种鳞盾型········侧柏Platycladusorientalis(L、)Franco15、种鳞不为盾型16、鳞叶小枝下垂或直立·····柏木CupressusfunebrisEndl、16、鳞叶小枝呈水平展开····扁柏Chamaecyparisobtusa(Sieb、、)Endl、var、formosana(Hayata)Rehd、形态特征描述:粗榧Cephalotaxussinensis(Rehd、etWils、)Li三尖杉科,三尖杉属灌木或小乔木,高达15米,少为大乔木;树皮灰色或灰褐色,裂成薄片状脱落。叶条形,排列成两列,通常直,稀微弯,长2-5厘米,宽约3毫米,基部近圆形,几无柄,上部通常与中下部等宽或微窄,先端通常渐尖或微凸尖,稀凸尖,上面深绿色,中脉明显,下面有2条白色气孔带,较绿色边带宽2-4倍。雄球花6-7聚生成头状,径约