BIOTYPES AND HYBRIDS. 



15 



N 



Fig. 4. Fig. 5. 



FIG. -l.Hursa b^^rsa-pastor^s heteris. Typical specimen from offspring of plant 

 shown in fig. 3. 



FIG. 5. Bursa bursa-pastoris heteris. Offspring of sib of plant shown in fig. 4. 



