Botany Commons^™

Trees Of Western Australia— The Coolabah, C A. Gardner

Journal of the Department of Agriculture, Western Australia, Series 3

The coolabah and the grey box are two common tropical trees which closely resemble each other in bark, foliage and other characters, but which differ widely in their soil requirements and in their timbers. Both are numbered among the most valuable trees of the Kimberley district because of the strength and durability of their exceedingly hard timbers and their resistance to the ravages of the termite.

Trees Of Western Australia - The Grey Box, C A. Gardner

Journal of the Department of Agriculture, Western Australia, Series 3

In the grey box the rough bark extends to the ultimate branches, unlike that of the coolabah where the smaller branches are usually smooth. The grey box is the common tree of the basalt areas to the north of the King Leopold Range, but unlike the coolabah it is not found along the streams but is more typical of the stony hills and undulating country. Its occurrence is so closely connected there with basalt and andesite, that this particular soil type can at once be mapped by reference to the grey box trees.

Poison Plants Of Western Australia: The Thorn Apples (Datura Species), C A. Gardner, H W. Bennetts

Journal of the Department of Agriculture, Western Australia, Series 3

Many garden enthusiasts are familiar with a shrub or small tree known as the "Angel's Trumpet" or "Trumpet-flowered Brugmansia." Some nurserymen call it "Brugsmania." There is another garden favourite which does not appear to possess a common name but is an annual or perennial plant from one to four feet in height, of summer growth and carrying erect violet or white trumpet-shaped flowers succeeded by large bristly or prickly pods. Both these are species of Datura. Another species is native to Western Australia while four more are introduced noxious weeds.

Trees Of Western Australia— Lemon-Flowered Gum, C A. Gardner

Journal of the Department of Agriculture, Western Australia, Series 3

The Lemon-flowered Gum is one of the lesser-known trees of the Eastern Goldfields. Originally discovered by Richard Helms, botanist to the Elder Exploration Expedition, 60 miles to the south of Victoria Spring, in 1892, it was not rediscovered until specimens were collected by Henry Dean, consulting engineer for the Trans-Australian Railway, near Zanthus in 1909. In that year it received from Maiden, Government Botanist of New South Wales, the name which commemorates Bernard H. Woodward, then Director of the Museum and Art Gallery in Perth.

Trees Of Western Australia— White Mallee, C A. Gardner

Journal of the Department of Agriculture, Western Australia, Series 3

This species is usually found in mallee form, growing from 10 to 18 feet tall, but may at times possess a single stem, and is thus a small tree. Both mallee and tree forms have characteristically a broad 'base or stock, so that frequently in the mallee forms the individual stems arise well above the soil level from a large domelike base. As a tree the stem may be as much as 18 inches in diameter. The species is characterised in the field by its white or pink bark which is covered throughout externally with a white smooth talc-like powder. …

Trees Of Western Australia— Coral-Flowered Gum, C A. Gardner

Journal of the Department of Agriculture, Western Australia, Series 3

Among the more decorative small trees available for planting in the Eastern Agricultural Areas, there are few more suitable that Eucalyptus torquata. This tree, known also as the "Christmas Tree" of the Coolgardie and Dundas districts usually blooms during December, and its handsome drooping coral-pink blossoms make it a conspicuous object in the woodlands at that season of the year. It was first discovered by L. C. Webster near Coolgardie in 1901, on a stretch of stony dioritic country 25 miles in length and about a quarter of a mile in breadth. It is found at least as far south …

Trees Of Western Australia - Swamp Or Flat Topped Yate, Brown Mallet And Four-Winged Mallee, C A. Gardner

Journal of the Department of Agriculture, Western Australia, Series 3

The two trees described here under may be readily distinguished when growing as they differ considerably in their barks and general appearance and grow under different conditions, but in common with some other trees of the Southwest each has the mallee form, and the mallee forms are very difficult to distinguish.

The Wedge-Leaved Rattlepod, C A. Gardner

Journal of the Department of Agriculture, Western Australia, Series 3

During the last two years, work has been in progress near Fitzroy Crossing (West Kimberley) upon an investigation to determine the cause of Kimber- Iey Horse Disease, commonly known as "Walkabout Disease." The investigations are still in progress, and the findings when completed, will be published elsewhere, but the discovery that Crotalaria retusa L. is a cause—and probably the major cause —of this disease is of considerable importance. Because of this it is considered advisable to assist pastoralists to recognise the plant and by providing information on its habit, occurrence and distribution, to enable them to take steps to minimise …

Trees Of Western Australia - Gimlets And Pear Fruited Mallee, C A. Gardner

Journal of the Department of Agriculture, Western Australia, Series 3

Next to the salmon gum, the gimlet tree is perhaps the best-known of the trees of the Eastern Agricultural Districts and the Eastern Goldfields. A thin reddish brown bark, and a fluted or spirally-twisted trunk (especially in the young trees), distinguish at a- glance the gimlet trees or fluted gums from all other Eucalyptus trees. This bark has a thin outer layer which when removed reveals a sappy pale green, inner bark, and sometimes this inner green bark is exposed when the trees shed their reddish-brown outer bark towards the end of summer.

Trees Of Western Australia - Salmon Gum And Scarlet Pear Gum, C A. Gardner

Journal of the Department of Agriculture, Western Australia, Series 3

The name salmonophloia, meaning salmon-barked, was given to this tree in 1878 by Ferdinand Mueller, the famous Australian botanist. The title of "Salmon- Barked Gum-Tree" had already been bestowed upon this tree by the early settlers, a name which apparently referred to the colour of the bark in fracture when it resembles the colour of cooked salmon flesh. The external colouration varies from a brownish pink at the end of summer to almost white in winter, usually with greyish-purple patches.

Dahlias - Lifting And Storing The Tubers, F Jackson

Journal of the Department of Agriculture, Western Australia, Series 3

Now that the flowering season for dahlias has finished, arrangements must be made for lifting and storing the tubers. Many losses occur each year during the dormant period and most of these are due either to carelessness or lack of knowledge. While the storage provided for dahlias during the winter months may be thoroughly satisfactory, tubers are often lost because of the treatments received by the plants during the growing period.

Poison Plants Of Western Australia: Isotropis, C A. Gardner, H W. Bennetts

Journal of the Department of Agriculture, Western Australia, Series 3

The genus Isotropis is restricted to Australia. Of the total of nine species six are recorded in Western Australia, two of them being known as "Lamb poisons" while the remainder have no common names. Three are known to be toxic to stock, but concerning the remaining three we have no definite information.

* Poison Plants of Western Australia is an ongoing series of articles. "Toxic Plants of the Genus Isotropis" is the subtitle and primary focus of this article.

Trees Of Western Australia - Tuart And Illyarrie, C A. Gardner

Journal of the Department of Agriculture, Western Australia, Series 3

Early settlers of the Swan River Colony soon learnt to value the timber of a tree which the aborigines called "Tooart." It ranked with that of the jarrah in local importance and, because of its toughness, was used for keelsons, stern posts, bridge supports, shafts and wheelright's work—in short for all purposes where great strength, solidity and durability were needed.

Trees Of W.A. Jarrah And Karri, C. A. Gardner

Journal of the Department of Agriculture, Western Australia, Series 3

In commencing this series, in which a large number of trees will be dealt with, first place must be given to the species of Eucalyptus which include, besides the gum-trees, the various shrubs and mallees which make up a considerable part of the woody flora of South-Western Australia.