1903.J V EXPLANATION OF FIGURES IN PLATE L 83 



have the same morphological nature and physiological function."^ There are 

 numerous bundles with peculiar appearance, as Worsdell remarked, which are 

 surrounded by the cortex having the same character as that of the root. 

 They consist essentially of small parenchymatous cells, more or less elong- 

 ated, with very dense protoplasmic contents and large nuclei. In the centre 

 of these cell-groups are a few tracheides. Each bundle is surrounded succes- 

 sively by large parenchymatous cells with pretty clear contents, containing 

 starch-grains, and by zone of cells with large nuclei and dense protoplasmic 

 contents (Fig. 14). Worsdell called such bundles in Christisonia , '^ proteid- 

 bundles,'^ and thinks them to be the storehouses for the spoils of the secondary 

 haustoriuw,, into which the frontal portion of each tubercle is always to be 

 differentiated. 2 Two or more bundles fuse together in entering the haus^ 

 torium, while their branches diverge towards the central cylinder of the 

 mother-root. A direct connection of each bundle with the central cylinder 

 is not observed ; its end appears to dip away into the cortex (cf. Fig. 14). 



5. The full grown tubercles give rise, like those derived from the seedlings, 

 to many roots and stem, and thus serve as an effective means of vegetative 

 reproduction.^ In this way, a large stock of the parasite with numerous 

 shoots in various stages of development is produced, all being connected by 

 the branches of the root. In PL I. Fig. 10, such an example is shown ; 

 the central large shoot, probably derived from a seedling, is now in flowers, 

 while the other remain still in younger stage. 



6. The tubercles, which are derived from the seedlings, and the primary 

 haustoria (Fig. 15) have the same structure with those secondarily produced 

 on the root. 



7. In the vicinity of Tokyo the subterranean part seems to luinter, for 

 even at the end of February of this year I have found a portion of roots 

 and some tubercles still living underground. 



Botanical Laboratory, Tokyo. 



March, 1903. 



1. Worsdell, W. C, On the Comparative Anatomy of certain Species of the Genus 

 Christisonia. Ann. of Bot. IX, 1895. 



2. Compare Worsdell, loc. cit. PI. V. Fig. 5. 



3. Koch, loc. cit. Worsdell, loc. cit. 



