NOTES AND EXHIBITS. 620 



Brewarrina, N. 8. W.— Samples of Ojmntia monacoAitha infested 

 with Coccus indicus, which has destroyed many acres of this 

 particular prickly pear, but does not damage any other species. 

 The Cape Cochineal, on the other hand, does not injure this 

 Opu7itia. 



Miss S. Hynes exhibited an example of Wahlenhergia gr'acilis 

 DC.,[N.O. CAMPANULACEiE], with double flowers, and a coloured 

 drawing of the flowers when fresh, collected by Mrs. Rowan at 

 Widgiewa, N.8.W. 



On behalf of Mr. E. A. Breakwell, the President exhibited, 

 under the microscope, transverse sections of the stem of a western 

 shrub, Apophi/Ilum anomahim F.v.M., [N.O. Capparide^]. The 

 anatomy of this Order has been investigated by Solereder (Sys- 

 tematic Anatomy of the Dicotyledons, Vol. i., pp 67-77), but 

 neither in his list of Capparidete examined does he include 

 Apophi/llum anomalum; nor does he refer to the presence of 

 palisade-tissue in the stems of any he did examine. The presence 

 of palisade-tissue in an Australian shrub, Bossicaa scolojjendria 

 Sm., has already been recorded by Mr. A. G. Hamilton, ^po- 

 phyllum, arwmalum has leaves which are caducous, and which 

 are extremely small in proportion to the size of the plant (1 x J[- 

 incli in a plant 10 feet high). The palisade-tissue in the leaf is 

 of the bifacial type. The cuticle is very thick, and stomata are 

 developed on both surfaces. The palisade-tissue in the stem 

 extends for some considerable distance towards the centre of the 

 leaf, and is interrupted at intervals by well developed sclereides. 

 The tissue is well seen both in young and mature stems. The 

 cuticle is extremely thick, and the stomata, which are well 

 marked, appear to lead, in some cases, into intercellular cavities. 

 The vascular bundles are strengthened by well developed scler- 

 enchymatous tissue. The stem is thus admirably adapted, in the 

 absence of normal leaf-development, for assimilatory functions. 

 The anatomical structure of leaf and stem shows extreme xero- 

 phytic characteristics. 



Mr. Fletcher showed a fruiting branchlet of a young tree of 

 Pisonia Brunoiiiana Endl., [N.O. Nyctagine^] from a garden 



