plant genera的用法和樣例：
例句
- In seed plant flora, the floristic composition is dominated by the temperate elements, which have tight relation to tropic elements.
種子植物區系以溫帶成分佔優勢，與熱帶成分有緊密的聯繫。 - Pteridophyte floras in Tianhuashan Natural Reserve were studied according by investigating its plant composition of the reserve.
摘要在調查天華山自然保護區植物組成的基礎上，對該區的蕨類植物區系進行了分析。
