PLATE 4 



Parasitism of Krameria canescens ox different hosts. 



1, Auto-parasitism of Krameria; only submerged part of haustorium is shown. 2, detail from young haustorial 

 cushion showing cells which form curving tissue of the mature organ. 3, Attachment of Krameria on Encelia 

 farino8a. 4. Penetration of haustorium to wood in root of Menodora scabra. 5. Krameria on root of Parkinsonia 

 microphylla, showing plugging of ducts of host. The heavy red margin indicates extent of formation of cork in 

 haustorium. 6, Attachment of Krameria roots to root of Prosopis velutina with formation of haustoria. 7, Attach- 

 ment of Krameria to Prosopis velutina, showing mature haustorium and its penetration into the woody cylinder of 

 host. 8, Attachment of Krameria, to root of Zizyphus parry i. 9. Attachment of Krameria, experimentally pro- 

 duced, to root of Parkinsonia aculeata. 



Figure 2 X 302; figure 6X2; the other figures X 44. 



