ACACIA SEEDLINGS. 399 



to four pairs, the number not being constant on each pinna 

 of the same leaf; rachis 5 to 7 mm. long, glabrous, ex- 

 current. 



No. 3. Abruptly bipinnate, petiole 1*4 to 1*8 cm. long, 

 sometimes channelled above, glabrous, excurrent; leaflets 

 four pairs, upperside green, underside paler or sometimes 

 reddish-green, the terminal pair being opposite, while the 

 remaining leaflets are sometimes alternate; rachis glabrous, 

 excurrent; stipules as in No. 1. 



Nos. 4 and 5. Abruptly bipinnate, petiole 1"3 to 2*5 cm. 

 long in No. 4, and 1*7 to 3*1 cm. in No. 5, about '8 mm. 

 broad, with a strong nerve along the lower margin, dilated 

 above* glabrous, excurrent ; leaflets five to six pairs, the 

 basal pair usually small, the inner one the smaller, the 

 terminal pair often obliquely obovate; rachis up to 2 cm. 

 long, excurrent. 



Nos. 6 and 7. Abruptly bipinnate, petiole 2*1 to 3*3 cm. 

 long in No. 6, and 1*6 to 4*2 cm. in No. 7, 1 to 2 mm. broad, 

 dilated as in Nos. 4 and 5, excurrent; leaflets six to seven 

 pairs, up to about t cm. long, the basal pair often less than 

 half that length; No. 7 may have two pairs of pinnae; 

 stipules about 1*5 mm. long. 



Nos. 8 to 10. These may be phyllocles with a fairly 

 central midrib and nerve-like margins, though not always 

 with any evidence of the glands which are a feature of 

 more mature phyllodes, or they may be abruptly bipinnate 

 with petioles up to eight pairs. 



There is no constancy in the number of bipinnate leaves 

 which occur before the phollodes appear. In any case they 

 are few, as compared with the numerous bipinnate leaves 

 on a seedling of A. rubida, a species with which this has 

 considerable affinity. 



