Plate 1 7. 
3. CHARA HYDROPITYS. 
,u' J. S. F. C. 1901. (To face page 80.) 
4, TYPHA LATI FOLIA. ROOTSTOCKS. 
1. CHARA CONTRARIA FORMA SUBINERMIS. 
2. CHARA CONTRARIA. 
5. NUPHAR ADVENA, ROOTSTOCK. 
