Explanation of Plate 



1. Pod of a plant of H. flava ; the result of self-pollination showing that 

 the plant is self-compatible. 



2. Pod on same plant as i ; the result of controlled cross-pollination with 

 pollen of H. fulva. 



3. Seeds from such a pod as shown in i and 2 ; some ovules become mere 

 rudiments of seeds and evidently are not fertilized ; some embryos die during 

 the development of seeds ; some seeds develop fully and are viable. 



4. Flowering branch of H. fulva near close of period of bloom, (a) Spur 

 left when flowers fall. (b) Pod' 10 days old. from cross with pollen of 

 h. Thunbergii, but becoming wrinkled and about to fall. Occasionally such 

 pods contain one or two partly developed seeds. 



5. Mature pod of //. fulva from cross-pollination with H. Thunbergii. 

 Such pods are rare. As far as known to the writer this is the first time the 

 fruit of this species has been illustrated. 



6. 7 and 8. All from a single plant of H. Thunbergii. All flowers carefully 

 self-pollinated. Some pods (a) maturing and yielding a few viable seeds: 

 some pods (b) becoming much shrivelled: no good pods on branch shown at 

 '"<. Results characteristic of feebly self-compatible plant.s of this species. 



