There are two main types of this flower; two geneses, I guess you could call them: sativa and indica.
这种花有两种主要类型；两个基因，我想你可以称它们为：苜蓿和籼稻。
英语百科
Sativum
Sativa, Sativus, and Sativum are Latin botanical adjectives meaning cultivated, used to designate certain seed-grown domestic crops.
Sativa (ending in -a) is the feminine form of the adjective, but masculine (-us) and neuter (-um) endings are also used to agree with the gender of the nouns they modify. For example, the masculine Crocus sativus and neuter Pisum sativum.