NOTES ON ACACIA. 173 



Pod (Kellerberrin specimen) not seen quite ripe, stipitate r 

 moniliform, about 6 cm. long and 5 mm. broad, seeds longi- 

 tudinally arranged, ovate, a shortish funicle thickened into 

 a somewhat irregularly shaped fleshy aril. 



Type. Oowcowing, Western Australia (Max Koch, No. 

 1030 (in part), August 1904). 



A ffinities. 



1. With A. Prainii Maiden, this Journ. li, 238. These 

 two species are closely allied; the pods and seeds of A. 

 Prainii are not available. A, Prainii has shorter phyllodes, 

 more rigid and with straight points, longer and more 

 numerous peduncles, and, apparently, an absence of bracts. 

 The petals are quite glabrous in A, nigripilosus. 



2. With A. inaequiloba W. V. Fitzgerald. A. nigri- 

 pilosus was doubtfully referred to A, inaequiloba, this 

 Journ. li, 211. In A. inaequiloba the central nerve is less 

 prominent on both sides, and the gland is round, not oblong 

 as in A, nigripilosus. In A. inaequiloba the gland causes 

 an outward bend of the phyllode when it occurs; not so in 

 A, nigripilosus. In A. inaequiloba the calyx is irregular 

 in shape, and there is an absence of the hairs which are 

 prominent in A, nigripilosus. 



3. With A. triptycha F.v.M. There is some general 

 similarity between the two species as regards the phyllodes, 

 which are, however, longer and with more numerous 

 though fainter striae in A. triptycha. In A. triptycha the 

 striae can only be seen under a lens, but in A. nigripilosus 

 the prominent vein or rib gives the phyllode a quadrangular 

 appearance. The heads of flowers in A. nigripilosus are 

 elongated rather than strictly spherical. The two species 

 are also sharply separated by the narrower pods of A. 

 triptycha. 



A. suaveolens Willd., A. iteaphylla F.v.M., A. Graffiana 

 F.v.M., and A. Lindleyi Meissn., are also species with 

 prominent bracts. 



