VIOLACEiE. 87 



cate-calcarate at the base. Anthers glabrous, tipped ivith a slender 

 subulate appendage; the two lower bearing a thick and short very 

 obtuse spur on the back. Style siginoid-curved, thickened and 

 gibbous at the apex, terminated by a unilateral truncate stigma. 

 Capsule ovoid-oblong, smooth. Seeds as in the genus : none were 

 seen with a matured embryo. 



Gingins' V. Chamissoniana, of which I have seen an authentic 

 specimen in the Hookerian herbarium, was evidently described from 

 a plant that wanted the principal cauline leaves, which are more or 

 less cordate. It is clearly the same species as the V. traclieliifolia of 

 the same author, who took the character from a drawing made by 

 Chamisso. The plant varies greatly in height, and in the size of its 

 leaves, &c. The only discrepancy between our specimens and the 

 description of Gingins is in the appendage of the anthers, which he 

 states to be obtuse, without mentioning its form ; while in our plant 

 it is reduced to a narrow and subulate process. 



Plate 5. — Viola Chamissoniana : the summit, with the base of 

 the woody stem. Fig. 1. A young seedling plant. 2. Stipules, en- 

 larged. 3. Diagram of the flower. 4. A flower, enlarged. 5. Same, 

 with calyx and corolla removed. 6. Three detached petals. 7. A 

 back view, and 8, a front view of one of the two lower stamens, mag- 

 nified. 9. A back view, and 10, a front view of one of the three 

 upper stamens, equally magnified. 11. Pistil, with the ovary longi- 

 tudinally divided. 12. A seed, magnified. 



2. IONIDIUM, Vent 

 1. Ionidium monopetalum, Eoem. & Sclndt. 



Ionidium monopetalum, Roem. & Schult. Syst. Veg. 5, p. 400. 

 Pigea monopetala & P. filiformis, DC. Prodr. 1, p. 307. 

 Solea monopetala, Spreng. Syst. Veg. p. 804. 



Hab. Near Sydney, New South Wales. 



The ample lower petal is either slightly emarginate or entire. 



