我国习见栽培的地生兰花，皆为兰属，与附生兰类相比较，其假鳞茎较小，叶片较薄，花序直立。其根粗壮肥大，分枝少，有共生根菌；花香袭人，花具花萼和花瓣各三片，花瓣中一枚特化为唇瓣，雌雄蕊合生为蕊柱。果实为开裂蒴果，长卵圆形，种子及小，数目众多。
自然疗法的医师主张处于慢性病恢复期的患者大量食用西兰花，因为业已表明西兰花类的蔬菜可以加速这类患者的康复。
Naturopathic physicians recommend generous daily servings of broccoli to patients recuperating from a lengthy illness, as this veggie has been shown to speed their return to good health.
大头菜是卷心菜和西兰花的近亲，是一种类似于芜菁的根类蔬菜，有淡绿色或紫色和白色的条纹。
A cousin of cabbage and broccoli, kohlrabi is a turnip-like root vegetable that is either light green or purple and white striped.
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