Flora of Australia. 317 



of N.S. Wales, 1909, 34, p. 363), and appears to be correct. 

 Victorian specimens also agree closely with some from the Paris 

 Museum, marked Trijyoliuin ronspicuum, D.C., which in the 

 Botany of California is made A. divaricatus, Nutt, so that a 

 further question of synonymy arises. The Victorian specimens 

 are close to, without exactly iiiatchino:, those of A. rlirnriratits. 

 Nutt, but throughout the whole genus we have variable species 

 with badly-delined boundaries. Aster dumosus differs from A. 

 ftnhulatus in its blunter, more obtuse bracts. 



Caladknia ixioidks, Lindl. = C. gemmata, var. ixioidks. 

 (Orchideae). 



Upper Swan R., Miss Sewell, 1883 ; Woorooloo, W. Australia, 

 Max Koch, Dec, 1906. The plant is merely a yellow flowered 

 variety of the blue flowered C. gemmata. Bentham (Flora 

 Austr., p. 389) retained the species, but admitted it might be a 

 variety only. Fitzgerald (Australian Orchids) found the floral 

 structure so identical with that of C. gemmata as not to need a 

 separate plate, but considered the species should be retained for 

 the convenience of collectors. 



Slight variations in the shape of the labellum occur in the 

 blue flowered forms of C. gemmata as well as in the yellow ones. 

 The latter appear to be rarer, and of localised distribution. 

 Since yellow is a more primitive colour than blue, the yellow 

 form is probably the original type, and has been suppressed by 

 the blue forms whenever they have come in contact, the two 

 forms not appearing to grow together. 



It is not possible to distinguish herbarium specimens of these 

 two " species "' if the colour has been completely lost. 



Caladenia Roei, Benth. 



The leaves up to 4^ inches in length. Cowcowing, W. Aus- 

 tralia. Max Koch. Dec, 1904. 



Calocephalus Skeatsiana, Ewart and White, n. sp. (Compo- 

 sitae). After Professor Skeats. 



A small, somewhat woody plant about 4-7 inches in height, 

 branchinfx freely from the base. All the stems, especially when 



