38 



and is readily circumsciss about half-way between the ovary 

 and the perianth-lobes ; in the ripe flower it is circumciss just 

 above the fruit. 



P. fiava, R. Br., var. diosmifolia, Meissn. (P. dichotoma, 

 Schlecht. in Linnaea, xx., 581, ann. 1847; P. diosmifolia, 

 A. Cunn. Herb, ex DC. Prodr., xiv., 510, ann. 1856-57). 

 Apparently the only form in South Australia. It is a low 

 shrub growing round our coasts and as far inland as Teatree 

 Gully, Modbury, Myponga, Lameroo, and Yumali. It differs 

 from the type in its white flowers; leaves thicker, more rigid, 

 usually smaller, and sometimes almost orbicular, with only 

 2 or 3 obscure nerves on each side of the midrib. The flowers 

 are not always strictly dioecious; on some plants, which are 

 chiefly male, 1 or 2 female flowers may be found among the 

 males in each head. If P. petrophila is retained as a species, 

 it would be more consistent if var. diosmifolia were also raised 

 to specific rank as P. dichotoma. 



P. microcephala, R. Br. There appears to be a certain 

 amount of dimorphism about the fruit of this species. The 

 drupe has always a more or less succulent pericarp, but some- 

 times this becomes red and berry-like, while other fruits on 

 the same plant remain green and much smaller, although 

 ripening the seed. The short female perianth becomes mem- 

 branous and divides somewhat irregularly near the middle, 

 the lower part often remaining attached to the base of the 

 fruit for a long time. 



Myrtaceae. 



Eucalyptus diversifolia, Bonpl. Yumali (Dist. T; S. A. 

 White). In scrub south of Lameroo. Here a small mallee; 

 leaves rather broad and very thick, resembling those of E. 

 capitellata. 



E. incrassata, Labill., var. dumosa, Maid. Pinnaroo; 

 Lameroo; Mulgundawa; Wellington. A small mallee, 3-5 m. 

 high, with white bark except near the base, from which the 

 dark bark often peels off. Fruit ovoid-oblong or ovoid, 

 8-9 mm. long, when ripe glossy, the valves sunk but the tips 

 very slightly exserted. Cold-and-Wet Station (west of Coon- 

 alpyn; H. W. Andrew); A good-sized tree; operculum red- 

 dish and ribbed. 



E '. oleosa, F. v. M. Just south of the town of Pinnaroo 

 this mallee is 5-7 m. high, with greyish-white bark on the 

 upper part of the stem and dark bark peeling off at the base. 

 Rocky slopes of Mount Patawurta, near Moolooloo (E. H. 

 Ising). "A mallee with several clustered stems, 4-5 m. high, 

 bark peeling off in strips up to 2 m. from the ground." In 

 the stunted scrub south of Pinnaroo grows what appears to be 

 a dwarf form of E. oleosa, tending towards E. itncinata, 



