463 



Plants" Bent-ham's name is retained and Mueller's treated 

 merely as a synonym. 



4. .As the Stylidium of Loureiro has fallen into complete 

 disuse and become only a synonym, the way is cleared for the 

 adoption of Swartz's Stylidium. Article 50 of the Vienna 

 rules says: — "No one* is authorized to reject, change, or 

 modify a name . . . because of the existence of an earlier 

 homonym which is universally regarded as non -valid." This 

 was evidently the view taken by Bentham in the "Flora Aus- 

 traliensis," and more recently by Dalle Torre and Harms in 

 their "Genera Siphonogamarum," and by Mildbraed in 

 "Engler's Pflanzenreich, Stylidiaceae." 



DESCBIPTION OF PLATES. 



Plate XL VII. 



Phebalium bullatum, n. sp. 1 and 3, upper-surface of leaves; 

 2 and 4, under-surf ace of leaves ; 5, transverse section of leaf ; 

 6, scale from under-surface of leaf; 7, pistil; 8, petal; 9, stamen. 



Plate XL VIII. 



Erigeron sessilifolms, F. v. M. 1, half of receptacle and 

 involucre, spread out and seen from below ; 2, bisexual flower ; 

 3, female flower: 4, style-branches: o, stamens: 6, hairs. 



