Abstract: Poacynum hendersonii and Apocynum venetum are two wild speciesknown collectively in China as Luo-bu-ma and used for fiber or medicalherb.The seeds of these species are very small,weighing only about 0.5grams per thousand kernels. When the seeds are stored under ordinaryconditions, their germinating

Key words: Luo-bu-ma, Storage of seeds,