石專(又名海蒿苣,俗名海青菜):是属于綠藻类絲藻属石專科。藻体为草綠色,叶寬广,达一市尺,叶面上生有許多大小不同的圓孔,質薄,由双層細胞組成。它生在海湾內潮地带石砾或岩石上。东山、平潭、漳浦、連江等沿海島屿均有分布。石專味甘性平无毒。有下水、利小便的功用,一般作为清凉剂。 Shizhuan (also known as sea radish, commonly known as sea greens): It belongs to the genus of green algae-like filamentous algae. The algae are grassy green, wide in leaves, and up to a city scale. There are many round holes of different sizes on the surface of the leaves. They are thin and composed of double layers of cells. It was born on the gravel or rocks in the inner tidal zone of the Gulf. Dongshan, Pingtan, Zhapu, Lianjiang and other coastal islands are distributed. Stone special sweet and non-toxic. There is a function of water and urination, and it is generally used as a cooling agent.