and on various Plants related to tl«m. 345 



interchange, as it were, of structure and representation of form, whieh Ua 1 

 me to consider this as a Momcotykdomms form of (he albuminiform homo- 

 geneous embryo, and as the analogue of liafji, and C&Hnea of Dicoty- 

 ledons. These speculations I have endeavoured tb illustrate in that part of the 

 present memoir which is intended to show that the group WUxantkece cannot 

 be concentrated so as to be placed after Monocotyledones, or indeed after any 

 of the primary divisions, but that it presents types appertaining to both Dico- 

 tyledon cs and Monocotyledones. 



EXPLANATION OF THE PLATES. 



Tab. XXXIV. 



Fig. 1. Male flower of Sapria Himalay ana, just before expansion :— of the natural size. 



Fig. 2. Section of the same. 



Fig. 3. Anther, viewed laterally; 3 a, 3 a, vertically :— magnified. 



Fig. 4, 4. Longitudinal sections of the same. 



Fig. 5. Half of longitudinal section of the same, viewed somewhat obliquely. 



Fig. 6, 6. Transverse sections of anther. 



Fig. 7. Part of the Endothelium, highly magnified. 



Fig. 8. Pollen, seen with y 1 ^- m. (after long maceration). 



Fig. 9. The same, fresh, seen with a simple lens of ^ focus. 



Fig. 10. A hair from the apex of the column : — highly magnified. 



Fig. 11. Mode of parasitism. 



Tab. XXXV. 



Fig. 1. Female flower of Sapria Himalay ana: — of the natural size. 



Fig. 2. The same, longitudinally divided. 



Fig. 3. Part of a placenta: — magnified. 



Fig. 4,4. Two of the ovula :— highly magnified. 



Tab. XXXVI. 



Fig. 1. Plant of Thottea grandiflora, reduced about 4± times. 

 Fig. 2. Fruit of ditto, reduced in the same proportion. 

 Fig. 3. Flower, of the natural size. 



2z2 



