中國科學院植物分類研究所,爲着配合中央農業部重點解决土地利用問題,派作者往渤海區調查。此次調查地點是河北省東北部的樂亭縣沿海區,工作時間自五月二十九日至六月十日。在工作期間,蒙當地村聯幹事張海山同志協助很多,又承本所韓樹金同志陪同工作;植物標本係本所張肇騫、唐進和汪發纘三先生分別鑑定;誌此以表謝 Institute of Botany, Chinese Academy of Sciences, in order to cooperate with the Central Ministry of Agriculture focused on resolving land use issues, sending authors to the Bohai area survey. The survey site is located in the coastal area of ​​Laoting County in northeastern Hebei Province, working from May 29 to June 10. During his work, Zhang Haishan, a member of the village committee in Mongolia, helped a lot with the work of Comrade Han Shugin, accompanied by his colleagues; Zhang Zhaoqian, Tang Jin and Wang Fa-zong, both from the Institute of Plant Species, respectively identified them;