382 



almost obsolete in A. Randelliana. The two species are 

 closely allied, the pod and seed being the distinguishing 

 characters (see pi. xviii.). [This is the first time I have 

 met with this Acacia. It is growing in abundance in the 

 sandhill country round Ooldea ; very ornate in growth, form- 

 ing beautiful spherical bushes up to 6 feet high, but generally 

 4 or 5 feet. The round seeds form food for pigeons and other 

 birds ; a great thickness of fallen leaves is to be found under 

 every bush.] 



Acacia salicina, Lindl. Ooldea. 'Umbrella Bush." 

 Pods 7-12 cm. long, 7-9 mm. broad, straight or curved, more 

 or less constricted between the seeds, but almost as firm and 

 woody as those of A. varians, Benth. [Grows closer to the 

 ground in the Ooldea sandhill country than it does farther 

 north and makes a larger bush.] .4. rigens, A. Cunn. 

 Monarto South, flowering August (Miss A. McMahon ; Dist. 

 M). A. Bynoeana, Benth. A specimen in the Tate Her- 

 barium, from west of Lake Amadeus, has solitary and glabrous 

 peduncles, about 10 mm. long, and often nearly as long as 

 the phyllodes. 



Cassia Sturtii, R. Br. Four hundred and thirteen miles 

 along East-West Railway. Leaflets in 5-6 pairs, lanceolate and 

 channelled above, so as to come very near those of C. 

 artemisioides. [Common shrub in sandhills ; in full blossom 

 in May.] C. eremophila, A. Cunn., var. platypoda, Benth. 

 Ooldea. [Common in sandhills, and in May the bushes were 

 covered in seed-pods from green to dark brown.] 



Swainsona colvteoides, F. v. M. Ooldea, flowering and 

 fruiting in June. Pods 4 cm. long, very bladdery. [This 

 fine Swainsona was growing close to the railway line about 

 400 miles from Port Augusta. The flower-spikes at the top 

 of the plants were over 4 feet from the ground.] 



Bossiaea Walkeri, F. v. M. Ooldea. [This strange plant 

 forms great masses on the sandhills 4 or 5 feet high, and at 

 the time of my visit was thick with dark-red flowers.] 



Zygophyllaceae. 



Zygophyllum fruticulosum, DC. Sixty miles west of Port 

 Augusta, July. A dry-country form, similar to that found 

 on the Murray, with very delicate, straw-coloured wings and 

 only one seed in each fruit examined ; those in the other 

 3 cells being abortive. [Found on the tablelands amidst the 

 stones; also in the sandhills, where it was in fruit.] 



Rutaceae. 



Boronia caei-ulescens, F. v. M. Ooldea. Petals tinged 

 with green (not purple) along the midrib ; leaves only 2-3 mm. 



