i6o The Ottawa Naturalist. [December 



Fig. 4 — Same species. The apex of the pistil with the style and stig'ma, 

 magriified. 



Figf. 5 — Viola papilionacea. A cleistogamic flower, with the sepals, excepting' 

 the appendages, removed ; the petals are represented by small, 

 wart-like organs, and the stamens are closely applied to the pistil, 

 magnified. 



Fig. 6 — Same species. A stamen showing the two anther cells and very 

 large, ciliate connective, magnified. 



Fig. 7 — Same species. The pistil, magnified. 



Fig. 8 — Viola sagittata. A cleistogamic flower showing only the long ap- 

 pendag^es of the sepals and the pistil, magnified. 



Fig. 9 — Same species, showing a small petal, the anterior, two stamens and 

 the pistil, magnified. 



Fig. lo — Same species. The pistil and a stamen, magnified. 



Fig. 1 1 — Same species. A stamen with the anthers very irregularly opened, 

 magnified. 



Fig. 12 — Same species. The three stamens of the flower, magnified. 



Plate V. 



Fig. 13 — Viola pedata. A typical leaf, of an old specimen collected in the 

 month of August. Natural size. 



Fig. 14 — Same species. A leaf, one of the earliest developed, of a youngs 

 specimen, one year old, collected in the month of April. Natural 

 size. 



Fig. 15 — ^Same species. A rootshoot, collected in the month of June. Natural 

 size. 



Fig. 16 — Same species. A rootshoot, collected in the month of June, showing 

 various forms of leaves. Natural size. 



