BY THE REV. DR. WOOLLS, D.D., F.L.S. 715 



22. Cryptostemma calendulacea, (R. Br.) 



23. JETypocIaeris glabra, (Linn.) 



24. Wedelia hespida, (Kth.) 



25. Picris hieracioides, (Linn.) 



26. Crepis japonica, (Benth.) 



27. Sonchus oleraceus, (Linn.) 



28. Cichorium Intybus, (Linn.) 



29. Leontodon hirtas, (Linn.) 



30. Tragopogon porrifolius, (Linn.) 



31. Taraxacum dens-leonis, (Desp.) 



The whole number of introduced plants belonging to the 



Monopetalse may be reckoned 58, and of these it appears that 



more than half are Composites, some of which, owing to the 



facility with which their seeds are wafted in all directions, have 



increased to a great extent. The most troublesome to the 



agriculturists on the banks of the Hawkesbury are Tagetes and 



Wedelia, for they spread over the cultivated flats and injure the 



crops of cereals. Carduus and Onopordon, which, in other parts 



of the colony, have taken possession of alluvial soil and impeded 



the progress of cultivation, have made but little advancement in 



the same locality. Amongst the Monopetalse of Australia, there 



are some very interesting plants, such as the species of Stylidium 



with their elastic column, the Goodenoviece with their curious 



indusium, and the order of the Epacrids, remarkable for their 



limited distribution out of Australia and their separation from 



Heathworts by the opening of the anthers. Of the Epacrids, 65 



species are indigenous in New South Wales, one of which attains 



the dimensions of a tree ( Trocliocarpa laurinaj; and two (Epacris 



purpurascens and E. microphyllaj are amongst the few Australian 



shrubs which have been found with double flowers in a wild 



state. Some species also afford small edible fruits ; but of the 



Monopetalee, Achras australis, Cargillia australis, and some kinds 



of Solatium (of which New South Wales has 22 species) are more 



appreciated in this respect, especially S. esuriale and S. vescum. 



