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Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,合瓣花亚纲,柿树科 Ebenaceae,6属，450种，主要分布于热带和亚热带地区，我国2属41种。,The species are mostly evergreen and native to the tropics and subtropics,with a few deciduous species,native to temperate regions.,柿树科 Ebenaceae,柿属,Diospyros,Diospyros,genus species are,trees and shrubs , either deciduous,or evergreen. The leaves, which lack,teeth, are usually borne alternately,on opposite sides of the twig.,The fruit is a large juicy berry,with 1 to 10 seeds. Some,members of the genus are,valuable for their timber,particularly several species of,ebony.,落叶或常绿乔木或灌木，无顶芽；叶互生,花单性罕,杂性，花为,4-5,基数，萼常,4,裂，绿色，花冠形成,钟，白色浆果肉质，基部有肿大的宿萼。,200,种，分布热带至暖温带，我国,40,种。,柿树,Diospyros kaki,落叶乔木，树冠为自然半圆形，无顶芽，树皮暗灰色，裂成长方形小块片固着树上。叶椭圆形、阔椭圆形，表面暗绿色，有光泽，雌雄异株，或杂性同株。花四基数，黄白色，浆果卵圆形或扁球形，橙黄色或鲜黄色，花萼宿存。花期5-6月，果熟9-10月。,原产我国，分布很广，长江流域，喜湿又耐旱.阳性树，喜光，根系为深根系，也很耐寒，亚热带果树中最耐寒树木.柿树寿命长，300年的老树仍可结果.对有毒气体能吸收.栽培历史有3000年之多。,树形优美，叶大荫浓，广展如伞，夏日一片浓绿,.,秋叶变红，红橙色大果悬于绿荫丛中，饶有风趣,.11,月叶落，红果还挂在枝头，极为美观,.,还可园林结合生产 观叶，观花，还可结合生产。,君迁子(黑枣 软枣 红蓝枣),Diospyros lotus,落叶乔木，树皮灰色，花淡橙色或绿白色.果球形或圆卵形，径1.2-1.8cm，成熟蓝黑色.外披白粉，萼宿存，花期4-5月，果熟9-10月，性强健，喜光，耐半荫，耐寒及耐旱性比柿树强，很耐湿，寿命长，常做柿树嫁接砧木.,雄,雌,木犀科 oleaceae,This family species are shrubs, trees and occasionally vines.,Leaves,The family is characterised by opposite leaves that may be simple or compound (either pinnate or ternate), without stipule,The leaves may be either deciduous or evergreen, with evergreen species predominating in warm temperate and tropical regions, and deciduous species predominating in colder regions.,Flower,The flowers are most often bisexual and actinomorphic(辐射对称的）, occurring in panicles, racemes or panicles, and often fragrant. The calyx which may or may not be present, and the corolla are synsepalous and four-lobed. The androecium has 2 stamens inserted in the perigynous zone and alternate with the lobes. The stigmas are two-lobed.,The gynoecium consists of a compound pistil with two carpels. The ovary is superior with two locules, each of which bearing two axillary ovules. Sometimes the base of the ovary is circled by a . The plants are most often hermaphrodite but sometimes polygamomonoecious.,Fruit,Oleaceae fruit can be berries, drupes, capsules or samaras.,木犀科 oleaceae,灌木和乔木；,叶对生,花两性，花萼4，花瓣全为4-6-（9）裂，雄蕊两枚,果为核果、蒴果、浆果或翅果。,本科不少种类为观赏树种，约29属600余种。,中国12属200种左右。,雪柳属,Fontanesia,共两种，中国1种,雪柳,F. fortunei,形态特征：,落叶灌木，树皮灰黄色，小枝细长，四棱形，叶披针形或卵状披针形，长3-12cm，端渐尖，叶柄短。花绿白色，翅果扁平，倒卵形，花期5-6月。,雪柳属,Fontanesia,共两种，中国1种,Fontanesia,is a genus of flowering plants in the family Oleaceae, usually treated as comprising a single species,Fontanesia philliraeoides, though some authors split this into two species.,It is a deciduous shrub growing to 8 m tall. The leaves are opposite, lanceolate to narrow ovate, with an acute apex and a usually entire margin, sometimes finely serrated. The flowers are white, with a deeply four-lobed corolla; they are produced in panicles 26 cm long. The fruit is a flat samara, surrounded by a wing,（一）形态特征：落叶灌木，树皮灰黄色，小枝细长，四棱形，叶披针形或卵状披针形，长,3-12cm,，端渐尖，叶柄短。花绿白色，翅果扁平，倒卵形，花期,5-6,月。,雪柳,F. fortunei,白蜡树属,Fraxinus,All the genus,Fraxinus,species are. The ashes are usually,medium to large trees, mostly deciduous .,The,leaves,are opposite (rarely in whorls of three), and,mostly pinnately-compound. The,seeds, popularly known,as,keys, are a type of,fruit,known as a,samara,.,多为落叶乔木，奇数羽状复叶对生，小叶常具齿，花小，杂,性或单性，雌雄异株，组成圆锥花序（花冠有时缺，存在时通常,浅裂，裂片2-4）/翅果的翅在果顶伸长。,约70种，主要分布在温带地区。中国20余种，各地有分布。,白蜡树,F. chinensis,花序生于当年生枝顶及叶,腋，叶后开放，小叶7枚，,翅果倒披针形。,温带树种，喜温暖湿润气候，耐寒性强，耐水湿，抗烟尘及有毒性气体，耐盐碱，树形端直，枝叶密，秋叶变黄非常漂亮，变色期1周。可做行道树，（北林前）植与湖边、河岸都好。秋叶、倒影。孤树也很好（陶然亭）,白蜡,美国白蜡 右,洋白蜡(大叶白蜡、美国白蜡),F. Americana,花序生于2年枝上，先叶开放，小叶7-9枚，叶痕上缘明显下凹，翅果长3-6cm，,原产北美，我国引种面广。,秋季变色期8天左右，从个别叶发黄到落完不到1个月，落叶期间5-6天落完。落叶整齐。,作行道树好，扫叶容易。常做行道树和庭荫树。,水曲柳,F. mandshurica,花序生于2年生侧枝，先叶开放，小叶3-7枚，多无小叶柄，小叶基部密生黄褐色绒毛。,分布东北、华北，耐寒性强，喜潮湿但不耐水涝。常做行道树、庭荫树，湖边河岸绿化。,绒毛白蜡 F.velutina,花序生于两年生侧枝，先叶开放，小叶3-7枚，常5枚，有小叶柄翅果较短，一般2-3cm。,原产北美，引种后，天津种植最多。本种耐水涝，不择土壤，耐盐碱，抗污染强。天津盐碱土，许多不长。对沿海城市很适用。,连翘属,Forsythia,They are deciduous shrubs typically growing to a height of 13 m . The leaves are opposite, usually simple but sometimes trifoliate with a basal pair of small leaflets; the margin is serrated or entire. The flowers are produced in the early spring before the leaves, bright yellow with a deeply four-lobed corolla, the petals joined only at the base. The fruit is a dry capsule, containing several winged seeds.,连翘属,Forsythia,落叶灌木，枝髓中空或成片状，叶对生，单叶少有羽状3出复叶，。花1-3朵生于叶腋，先叶开放，萼4浅裂，花冠黄色4裂。雄蕊2，蒴果卵圆形。,共7种，中国4种，西北至东北和东部。,连翘,Forsythia suspense,落叶灌木，,干丛生，直立。,枝开展拱形下,垂，髓中空，,单叶，有时为3,子叶，对生。,花先叶开放，,花期45月。,变种：,垂直连翘,枝的下垂通常可匍匐地面，而在枝梢生根，花冠裂片较宽。,三叶连翘,叶通常为,3,子叶或,3,裂，花冠裂片窄，常扭曲。,金钟花Forsythia viridissima,小枝髓薄片状，单叶对生。中部以上有粗锯齿，花深黄色。,习性，繁殖，应用同连翘。,金钟连翘，杂交种，性状介于二,者之间。枝具髓，叶三裂或四,裂，花色不一。,丁香属Syringa,They are deciduous shrubs or small trees.,The leaves are opposite (occasionally in whorls of three) in arrangement, and their shape is simple and heart-shaped to broad lanceolate in most species, but pinnate in a few species (e.g.,S. protolaciniata, S. pinnatifolia,).,The,flowers,are produced in spring, each flower with a four-lobed,corolla, the corolla tube narrow. The usual flower colour is a shade of purple (often a light purple or,lilac,), but white and pale pink are also found. The flowers grow in large,panicles, and in several species have a strong fragrance. Flowering varies between mid spring to early summer, depending on the species. The,fruit,is a dry, brown,capsule, splitting in two at maturity to release the two winged,seeds,丁香属Syringa,落叶灌木或小乔木，枝为假二叉分枝。叶对生或多单叶，全缘，稀羽状深裂（波斯丁香，裂叶丁香）。花两性，组成顶生或侧生圆锥花序，花冠漏斗状具深浅不等4裂片，也有5（少数）。蒴果长圆形。,约30种，分布于亚洲和欧洲。中国产20余种。西南至东北各地都有。,紫丁香Syringa oblata,灌木或小乔木，叶广卵圆形，基部心形，全缘。圆锥花序长615cm，花冠黄紫色，花期4月。分布东北，华北，西南，朝鲜也有。,变种：,（1）白丁香，花白色，叶较小。,（2）紫萼丁香，花序轴，花萼紫兰色，叶先端狭尖。,（3）佛手丁香，花白色，重瓣。,欧洲丁香 红丁香,欧洲丁香,紫丁香是我国北方很重要的很普遍的花木之一。孤植于庭院，机关，厂矿，居民区。散植于路旁，草坪中。还可用作花径，形成丁香路。也可和其他丁香种配植成专类园（东北多），形成美丽，芳香的景区。因其他丁香花期能错开，暴马丁香较晚，色味浓白花。花色有兰紫，红，粉，白色等。,流苏树属Chionanthus,共2种，中国有1种,流苏树（茶叶树，乌金子）Chionanthus retusus,It is a deciduous shrub or small to medium-sized tree growing to 20 m in height, with thick, fissured bark. The leaves are 312 cm long and 26.5 cm broad, simple ovate to oblong-elliptic, with a hairy, 0.52 cm long petiole. The flowers are white, produced in panicles 312 cm long. The fruit is a blue-black drupe 11.5 cm long and 0.61 cm diameter.1,Fringetree is a deciduous.Common name refers to the slightly fragrant, spring-blooming flowers which feature airy, terminal, drooping clusters of fringe-like, creamy white petals. Dioecious (separate male and female plants), but also may have perfect flowers on each plant. Male flowers are showier than female flowers. Fertilized perfect or female flowers give way to clusters of olive-like fruits which ripen to a dark, bluish black in late summer and are a food source for birds and wildlife. Wide, spear-shaped leaves (to 8 long) turn yellow in autumn.,流苏树属Chionanthus,共2种，中国有1种,流苏树（茶叶树，乌金子）Chionanthus retusus,叶灌木或乔木，树枝开展，小枝初生时有毛。叶椭圆形，卵圆形，卵状长圆形，倒卵形，全缘，花白色，花冠4深裂，几达基部，裂片线形，成松散复聚伞花序，生于有叶的侧枝先端，核果长1-1.5cm,花期4-5月,花期怕风,特别是干风。,观赏特性与园林用途：本种花序大而美丽，清丽可爱，花密优美，花形奇特，远看层层积雪非常美观，花期长可达20天左右，是优美的观赏树种，载植于安静休息区，或以常绿树衬托列植，都十分相宜。散植于草坪也很美。嫩叶代茶，香味不亚于“龙井”，故称“茶叶树”，推广树种。,女贞属 Ligustrum,Evergreen, semi-evergreen or,deciduous,shrubs and small trees.,The flowers are small and fragrant,and borne in panicles. They have,four curled-back petals and two high,stamens with yellow or red anthers(花粉,囊), between which is the low pistil; the petals and,stamens fall off after the flower is fertilized, leaving,the pistil in the calyx tube. The fruits, borne in clusters,are small purple to black drupes.,女贞,Ligustrum lucidum,常绿乔木，枝开展，叶草质，宽卵形至卵披针形，全缘，圆锥花序顶生，长10-20cm，花白色，基无柄，核果长圆形，熟时蓝黑色，花期6月。,原产于我国和日本，山西南部，河南南部，山东南部及甘肃南部有栽培。,常绿阔叶 大叶黄杨 黄杨科较耐寒，在北京可种植。女贞在北京需保护、生长不良。,喜光，稍耐阴，喜温湿润气候，不耐寒，适生于微酸性至微碱性土壤，耐修剪，抗SO2,对Cl,2,有一定抗性，抗氟化氢，还能吸收铅蒸汽。,江南多用绿篱，行道树，或载植于草坪边缘或建筑背面，角隅等处，对多种有毒气体有抗性，工矿区绿化。,水蜡树,Ligustrum obtusifolum,小叶女贞,L. quihoui,小蜡,L. sinense,这三种都是落叶或半常绿灌木,叶大小相差不大，树形园整，都耐修剪，抗污染性强，适合城市环境，不易区别。,小蜡 小叶女贞 水蜡,树高 2-7m 2-3m 2-3m,叶形 叶下部宽 叶上部宽 中部宽,花序 4-10cm 7-21cm 2.5-3cm,花冠与裂片,裂片筒长 裂片=筒长 裂片筒长,花梗 有 无 有,木犀属 Osmanthus,They range in size from shrubs to small trees,2-12 m tall. The leaves are opposite, evergreen,and simple, with an entire, serrated or coarsely,toothed margin. The flowers are produced in,spring, summer or autumn, each flower being,about 1 cm long, white, with a four-lobed,tubular-based corolla (petals). The flowers,grow in small panicles, and in several species,have a strong fragrance. The fruit is a small,(10-15 mm), hard-skinned dark blue to purple,drupe containing a single seed.,木犀属 Osmanthus,桂花 Osmanthus fragrans,常绿灌木及小乔木，高可达12m，芽叠生，叶长椭,圆形，全缘或上部有细齿，花簇生叶腋或聚伞状，,花小，黄白色，浓香，核果椭圆形，紫黑色，花期9,到12月。,变种,丹桂：花橘红色或橙黄色,金桂：花黄色至深黄色,银桂：花近白色,四季桂：花白色或黄色，花期5-9月，可连续开花数次,刺桂,桂花树干端直，树冠圆整，四季常青，花期正值中秋，香飘数里，是我国传统名花，在庭院前对植两株，叫“两桂当庭”是传统的配植手法，还可将桂花在道路两边，假山，草坪院落地栽培，还可在花坛中心孤植一株，也有大面积种植，形成桂花山，桂花岭，秋末浓香四溢，香飘十里。同时又结合生产，与秋色野树和配植，平潮秋月，柿红枫，鸡爪槭，紫叶李，乌臼，桂花，色香都得到反映，是点缀秋色的好材料。,茉莉属 Jasminum,落叶、常绿灌木；,奇数羽状复叶或单叶；对生、稀互生；全缘；,花冠高脚碟状，4-9裂，雄蕊2，生花冠筒内，浆果。,茉莉 Jasminum sambac,It is an evergreen vine or shrub. The leaves are,opposite or in whorls of three, simple (not pinnate,like most other jasmines), ovate, 4-12.5 cm long and,2-7.5 cm broad. The flowers are produced in clusters,of 3-12 together, strongly scented, with a white corolla 2-3 cm diameter with 5-9 lobes. The flowers open at night, and close in the morning. The fruit is a purple-black berry 1 cm in diameter.,常绿灌木，单叶对生，薄纸质，花聚伞形花,序，通常三朵，花冠白色，浓香，常见有重瓣类,型，花后不结实，花期5-11月，以7-8月盛开。,北方都是盆载，还容易产生叶子发黄，开花不,好，主要是土壤水是碱性，在南方作下木，花篱，,或芳香园，还可作花篮，花圈装饰用，襟花佩带。,迎春花 Jasminum mudiflorum,落叶灌木（暖地常绿），枝细长拱形，绿色四棱，叶3小叶，对生，花单生，先叶开放，花冠黄色，裂片6，约为花冠筒长度的二分之一，通常不结果。花期2-4月（迎春和连翘不易区分）,分布我国北部，西北，西南各地。,喜光，耐荫，较耐寒，北京可种（杨凌有野,生），喜湿润，耐干旱，对土壤要求不严，枝着地,也生根。,栽培迎春很少结果，繁殖多用扦插，压条，分,株法，很易成活。,迎春，植株铺散，枝条鲜绿，不论强光，背阴处,都能生长，早春黄花便开，对我国冬季漫长的北方,来说，装点冬景有很大意义。各庭院，园林都引载。,南方引与腊梅，山茶，水仙同植一处，构成新春佳景。与银芽柳，山桃同植，早极喜光，在石山品中与黄馨，南天竹，梅花搭配，繁花竞露，美不胜收。还可做盆景，切花插瓶。,云南黄馨,探春（迎夏）,Jasminum floridum,花黄色，花期5-6月，花冠裂片5，和迎春很像,茄科 Solanaceae,Flowers are typically conical,or funnelform with five petals,usually fused. The leaves are,alternate, often with a hairy,or clammy surface. Solanaceous plants produce a,fruit,that is,either a,berry, as in the case of the,tomato,or,wolfberry, or a,dehiscent capsule. The stamens are usually present in,multiples of four. The ovaries are inferior. The hypogynus,gynoecium is a located obliquely in relation to the median.,约80属3000种，广泛分布于世界温带及热带地区，美洲热带种,类最为丰实，中国24属，105种，35变种。,枸杞属 Lycium,They are long-lived, perennial,thorny shrubs, with,deciduous alternate, simple leaves,. The flowers are solitary or in small clusters, with a corolla of five purple, white or greenish-white petals joined together at their bases. The fruit is fleshy, multiseeded berry that may be red, yellow, orange, purple or black. These fruit resemble nightshade and bittersweet berries. In some species called wolfberries,or longevity fruit (notably,L. barbarum,and,L. chinense,), the fruit is edible.,落叶或常绿灌木，通常有棘刺，单叶互生或蔟生，全缘，具柄或近于无柄，花有梗，单生于叶腋或蔟生于短枝上，花萼钟状，,3-5,裂，花后不甚肿大，宿存，花冠漏斗状，多,5,裂，雄蕊,5,，子房,2,室，浆果，长圆形，约,100,种，分布于温带，中国,7,种,3,变种，主要分布西北或北部。,枸杞 Lycium chinense,多分枝灌木，枝细长，常弯曲下垂，具针状棘，花淡紫色，浆果红色，卵状，花果期6-11月。,枸杞花紫色，花期长，入秋后红果累累，缀满枝头。,状若珊瑚，很是美观。是庭院秋季观果灌木，可在,池畔，河岸，山坡，,径旁，悬崖石隙以,及林下，井边载植，,还可用作老株做树,桩盆景。果实，根,皮可入药，嫩叶可,做蔬菜用。,宁夏枸杞 Lycium barbarum,产中国北部，西北部，,繁殖应用和枸杞一样。,玄参科 Sorophlariaceae,绝大部分为草本,泡桐属,Paulownia,They are,deciduous,trees,1025 m tall, with large,leaves,1540 cm across, arranged in opposite pairs on the stem. The,flowers,are produced in early spring on,panicles,1030 cm long, with a tubular purple,corolla,resembling a,foxglove,flower. The,fruit,is a dry capsule, containing thousands of minute,seeds,.,绝大部分为草本,泡桐属 Paulownia,落叶乔木，枝条粗壮，髓心大，顶芽枯萎或变成花序。,叶单叶对生或有时轮生，叶形大，具长柄，全缘，或3-5裂，叶脉掌状叶脉，星状毛，腺毛，分枝毛。,花为两性花，花冠不整齐，圆锥花序，花萼宿存，钟状或盘状，,5,裂，花冠二唇形，白色，紫色或有紫色花纹或斑点。雄蕊,4,，,2,长,2,短；子房二室，柱头二裂。,果实为蒴果，卵形或椭圆形，种子多数，种子两侧具窄翅，果皮木质或较薄。,分布：,8,种，大部分原产于我国，西北,5-6,种。,毛泡桐 Paulownia tomentosa,叶下面有分枝毛，花序大型圆锥花序，紫色花，耐盐碱。,白桦泡桐 P.fortunei,花白色,果大,圆锥花序,喜光,耐寒性差。,楸叶桐 P.catlpifolia,圆锥花序，果小，叶先端长，耐干旱瘠薄，耐寒。,兰考泡桐 P.elongata,叶卵形,顶端钝,圆锥花序,喜温暖气候,疏松肥沃土壤.,紫葳科 Bignoniaceae,100属800种，主要产区热带。木本有5种。,楸树属(梓树属 )Catalpa,Catalpas grow to 10-25 m tall, and can be recognized by their large heart-shaped to three-lobed,leaves, showy white or yellow,flowers,in broad panicles, and in the autumn by their 20-50 cm long,fruits,which resemble a slender,bean,pod, containing numerous small flat seeds, each seed having two thin wings to aid wind dispersal. Because of the leaves, they are sometimes confused for,Tung trees,in the south U.S.,100属800种，主要产区热带。木本有5种。,楸树属(梓树属 )Catalpa,落叶乔木，枝条粗壮，枝条无顶芽，芽鳞数个。,单叶轮生或对生，叶全缘或缺裂，3-5掌状脉，叶,下面脉腋处，有腺斑，叶柔毛。,花两性，不整齐，大，圆锥或总状花序，顶生，,花萼2-3，基部合生，木质脱落，花冠合生，顶端5,裂，内部有黄色条纹，紫班，雄蕊2个。,果蒴果，很长很长的圆柱形，55cm，蒜苔状果,实，2裂，种子两端具白色长毛。,梓树 Catalpa ovata,花淡黄色，径长约20cm，叶卵圆形，叶通常3-5浅,裂，蒴果20-30cm，筷状，花期晚5-6月。,楸树 Catalpabunge,花浅粉色，2cm以上，叶三角状倒卵形，叶不裂，,偶有裂。,黄金树Catalpa speciosa,花白色，叶长达30cm，偶有1-2浅裂，圆锥花序。,蒴果粗如手指。,黄金树,炮仗藤属,Pyrostegia,约5种，产南美，中国引入1种,炮仗藤 P.ignea,常绿乔木，径粗直，有棱,复叶有小叶3枚，顶端小叶成线形,花为圆锥状具伞花序，下垂，花萼钟状，端5齿裂，花冠橙红色，筒状，端5裂，稍呈二唇形，雄蕊4，2枚伸出筒处，2枚花筒中，花期初春，原产巴西，不耐寒，在南方露地栽培常植于建筑物旁或棚架上，遮荫，观赏，花红色，很茂密，累累成一串，状如炮仗，花期长，北方盆栽。,凌霄花属,Campsis,Evergreen climbing,shrub, fast growing,up to 24 m;,compound leaves with 2,or 3 ovate acuminate,Leaflets；,leaflet often a tendril.,凌霄花,Campsis,落叶藤本，借全根攀缘,奇数羽状复叶，小叶有齿，对生,顶生聚伞花序，圆锥花序，花鲜红色，或橘红色，雄蕊4，2短2长,蒴果长，种子多数，具齿,有两种，一种在北美，一种在中国和日本,。,凌霄 Campsis graneliflora,复叶7-9，叶两面无毛，,叶缘疏生齿7-8齿，花,萼裂深，花萼绿色，花,大，5-7cm，原产于中,国，日本。,美国凌霄,Campsis radicans,小叶9-13枚，叶背柔毛多，叶缘4-5齿，花小4 cm，花萼棕红色，质地厚，裂得较浅1/3，无纵棱，蒴果先端尖。,实验九,1.,区别下列相近属或种,君迁子与柿树 迎春花与连翘 连翘与金钟花 紫藤与凌霄 梓树与楸树 泡桐属与楸树属,2. 列检索表区别下列各属,白蜡属、雪柳属、连翘属、丁香树、茉莉属、木犀属,谢谢观看,/,欢迎下载,BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAITH,内容总结,合瓣花亚纲。秋季变色期8天左右，从个别叶发黄到落完不到1个月，落叶期间5-6天落完。共2种，中国有1种。流苏树（茶叶树，乌金子）Chionanthus retusus。皮可入药，嫩叶可。雄蕊4，2长2短。花白色,果大,圆锥花序,喜光,耐寒性差。叶卵形,顶端钝,圆锥花序,喜温暖气候,疏松肥沃土壤.。楸树属(梓树属 )Catalpa。复叶有小叶3枚，顶端小叶成线形。谢谢观看/欢迎下载,
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