Severe “ whiptail ” condition in field specimen from and acid soil . bare midribs or very narrow residual lamina 甘蓝缺钼“鞭尾症：在田间试验和酸性土壤上有严重的鞭尾症状，中脉突出，狭小的叶片残留。
2.
We use bezier curves to describe the shape of leaf midrib and embed the image of leaf into the space of local frames along the midrib curve 植物叶面的造型采用bezier参数曲线描述叶子中脉的形状，然后将叶子的纹理图象嵌入到叶脉曲线的局部标架中。
3.
As for the leaves , we use bezier curves to describe shape of leaf midrib . the texture image of leaf is embedded into the space of local frames along the midrib curve 对于叶片的生成,本文采用bezier参数曲线描述叶子中脉的形状,把树叶或草叶构成的星形结构纹理图象嵌入到叶脉参数曲线的局部标架中来实现。
4.
Numerous small rounded dark brown or black necrotic patches in green leaves ; patches often in groups or rows close to midrib or major lateral veins , towards centre or basal areas of leaflects ; petioles green and healthy 缺锰的马铃薯叶片：叶片上有大量深褐色或黑色坏死小圆斑，叶的主脉或大部分侧脉附近有条状斑纹，向叶中部和基部扩散，叶柄正常并保持绿色。
5.
Detail of young leaves and growing point ; many leaves reduced to bare midrib or narrow green corrugated residue of lamina ; youngest leaves and growing point brown and dead ; large green stipular lamina around crown 缺锰甘蓝的“鞭尾症：关键在于嫩叶和生长点，许多叶片露出中脉或缩小成绿色波状的薄层残留，心叶和生长点变褐并死亡，顶部周围有大量绿色长有托叶的叶片。
6.
It is mainly characterized in the triangular - lanceolate leaves which are green but white with dark green reticulation along the midrib and more or less truncate at base ; the flowers are erect on the rachis and half - opened ; the lip is tripartite , glabrous , more or less urceolate in side view ; the hypochile is saccate , ovoid and big while the epichile is relatively tiny , reflexed , undivided and transversely oblong or subreniform 本种之主要特征为： ?呈三角?披针形， ?面?色，沿中?有白色斑块， ?基多少呈截形；花直?于花轴，半张；唇瓣呈三段? ，平?无毛，侧视时多少呈壶型；基段片囊? ， ?形，巨大，先段片相对微小、反卷， ?再细?而呈横向椭圆形。
7.
Leaves tufted ; stipes 15 - 30 cm long , densely scaly at base , glabrous above ; sterile lamina about 60 cm long and 20 cm wide , simply pinnate ; pinnae numerous , alternate or subopposite , linear - lanceolate , the largest about 12 cm long and 1 cm wide , base cordate , apex acuminate , margin finely toothed ; veins close , forking once or twice and forming areoles near the midrib ; fertile lamina similar to sterile ones , but somewhat reduced , about 8 cm long and 0 . 4 cm wide , lower surface almost entirely covered with sporangia 叶簇生；叶柄长15 - 30厘米，基部密被鳞片，向上近光滑；不育叶片长约60厘米，宽20厘米，一回羽状；羽片多数，互生或近对生，线状披针形，最长者长达12厘米，宽约1厘米，顶端长渐尖，基部心形，边缘有细密锯齿；叶脉1 - 2次分叉，近中脉形成网眼；能育叶与不育叶相似，但较小，长约8厘米，宽约0 . 4厘米，下部满布孢子囊。
