NOTES ON ACACIA. 255 



slightly lobed, reaching about two-thirds up the corolla; 

 tips thickened, long scattered hairs on some of the nerves 

 and tips, edges ragged. Petals united two-thirds up, 

 glabrous. Pistil smooth. 



Pods and seeds not seen. 



Jibberding, and Lake Monger, Victoria district. Growing 

 on sand-plains. September, 1905 (Max Koch, No. 1341). 

 In flower. (Distributed by Mr. Koch as A. cyperophylla 

 F.v.M.). 



The closest affinity of this species is to A, cyperophylla, 

 and the differences may be indicated as follows : — 



The phyllodes of A. longiphyllodinea are even more rigid 

 and coarse than those of A. cyperophylla, and are up to 

 half as long again. They are entirely glabrous, deeply 

 grooved and ribbed. Some ribs stand up more prominently 

 than others. There is an absence of tlie constricted base 

 us seen in A. cyperophylla, the phyllode broadening a little 

 at the base, and becoming decurrent, with the grooves and 

 ridges continuous. Branchlets glaucous. The peduncles 

 are 1 cm. long, those of A. cyperophylla are shorter. 



The flower spikes of the latter species are shorter. 



The truncate calyx of A. longiphyllodinea reaches about 

 two-thirds up the corolla ; (half-way in A. cyperophylla). 

 The calyx is more definitely nerved than in A. cyperophylla, 

 and it has longish scattered hairs. 



[Jibberding is just east of the 120 mile peg, north of 

 Cunderdin, on the East Goldfields Railway. The south 

 end of Lake Monger commences about four miles north of 

 Jibberding, about three miles east of the 124 mile, and 

 extends north for about 40 miles parallel to Rabbit-proof 

 ience (Watheroo section), and thence north-east another 30 

 odd miles. The camp known as Lake Monger would be 

 situated to the west of the fence, opposite the 141 mile, 



