BY J. H. MAIDEN AND E. BETCHE. 307 



LEGUMINOSJE. 

 Isotropis atropurpurea F.v.M. New for New South Wales. 



Bingara (J. L. Boorman; September, 1907); Manilla (G. A. 

 Higgins; Oetober, 1907). 



Previously recorded only from South-West and North Australia. 

 Its New South Wales habitat is, as far as known at present, the 

 rocky tableland between the headwaters of the Gwydir and 

 Namoi Rivers, an area roughly estimated at about 80 to 100 

 miles square. At Bingara it is a dense shrub, 2 or 3 feet high, 

 growing between boulders and in crevices of rocks: near Manilla 

 it grows in gravelly Box and Apple-tree country, about 2 feet 

 high, but attains a height of 6 feet, according to Mr. Higgins, in 

 another locality near Manilla. The distribution of this plant in 

 Australia, so far as we know it at present, is very curious. It 

 grows apparently gregariously, covering acres, but the patches 

 are thousands of miles apart so far as present records go. 



Bossicea rhombifolia Sieb. var. concolor, n.var. 



Araluen(J. L. Boorman; August, 1907). 



The typical B. rhombifolia, common in sandy and sandstone 

 •country, has yellow flowers with a dark keel; the new variety 

 has flowers entirely yellow. According to the collector's field 

 notes, it grows together with the typical form, but is rarer, much 

 more slender in habit, and the foliage has a more glaucous tint. 



Aotus villosa Sm. 



A form with all yellow flowers. Narrabri (J. L. Boorman; 

 August, 1907). 



This is a precisely parallel case with the yellow-flowering 

 Bossicea mentioned above. The same unknown influence (perhaps 

 the colour-sense of some particular insect) which caused Bossicea 

 rhombifolia to depart from the usual colour of its flowers, has 

 probably been at work in the yellow form of Aotus villosa. Also 

 in Aotus both forms are found together in the same locality, and 



