花卉千姿百态,种类繁多。但是典型的花朵都是由花柄、花托、花萼、花瓣、花蕊组成,而完整的花卉由花冠、枝茎、叶、根组成。一般来讲,花冠、枝茎和叶是主要的描绘对象,花冠就是通常我们所说的花头,是花卉中最重要的描绘对象。
一、花的各部分结构:

花蒂:

雄蕊:

雌蕊:

二、花卉的形状:不同种类的花卉,花头的形状也各不相同,主要可以分为球形、碟形、杯形、漏斗形等。球形的花头多为复瓣,如牡丹、芍药、菊花、茶花等;碟形的花头从侧面看似碟状,如桃花、杏花、梅花等;漏斗形的多为合瓣花,如牵牛花、迎春花、百合花、扶桑等;杯形的如郁金香、半枝莲等。
漏斗形花冠:

钟状花冠:

十字形花冠:

球形花冠:

杯形花冠:

碟形花冠:

三、花蕊的形态:
花卉的花蕊有多种不同的形态,在画花鸟作品时,点花蕊犹如画龙点睛,一般放在最后完成。勾花蕊的花丝一般用中墨或淡墨,用笔要干净利落,不可太粗。花药的形状也各不相同,有的呈圆球形,如梅花、桃花等;有的呈长柱形,如牡丹、芍药等;有的呈米粒形,如山茶、月季等;有的呈丁字形,如百合、萱草等。






四、花卉的枝干:
从外形上划分,一般将花卉分为草本、木本和藤本三种。木本花卉又可分为乔木和灌木,乔木有主干和分枝,如玉兰、杏等;灌木没有主干,多枝条,如月季、牡丹、迎春等。草本花卉有凤仙、芍药、大丽花、美人蕉等。藤本花卉有牵牛、葡萄、丝瓜、黄瓜等。
乔木:

灌木:

草本:


藤本:


五、花卉的叶子:不同花卉的叶子大小各不相同,叶子由叶片、叶托和叶柄三部分组成。
从形状上叶子分为:圆形,如荷叶;带状,如兰花的叶子;心形,如紫荆花的叶子;扇形,如银杏的叶子;针形,如松针;剑形,如茨菰的叶子;掌形,如芙蓉花的叶子;卵形,如月季的叶子;长卵形,如枇杷叶子等。
除了在形状上的区别外,叶子的叶脉和边缘的变化,依次分平行叶筋和网状叶筋两种。











另外,叶子在枝茎上的排列顺序,可分为互生、对生、轮生和丛生几种。




网友评论