12 December 2008

The Angophora costatas on the Central Coast of New South Wales are looking magnificent at the moment. All red flaky bark and gnarled branches contorted into the strangest shapes. They are such an interesting tree; they blend effortlessly into the background of Eucalypt forest for most of the year and then when it is their time to shine, shine they outstandingly do. At the moment (December) it is the colours of the bark rather than the small white flowers that is drawing attention..





They are sometimes called Sydney Red Gum or the Rusty Gum. The Red Gum rather obviously because of the colour of their bark at certain times of the year and Rusty gum because at other times they exude rusty tears down the sides of their trunks.


Sometimes rather a lot of rusty tears.





Angophoras are no longer in the “gum” or Eucalypt family. They are now more properly in a category of their own – the Angophoras. At the moment the Angophoras are described as having ten species on some sites, but that is rather fluid.

Even though they are no longer in the Eucalypt family they are closely related, and Angophora costata looks very similar to its close relative, Corymbia maculata, the Spotted Gum, particularly when it is shedding bark. Both have smooth deciduous bark which is shed in thin elongated patches right to the ground leaving a dimpled smooth finish that fades gradually to grey.




This tree has flexed its muscles and “popped” right out of its skin.



Angophoras are often grown in native gardens”. They grow easily from seed and are widely available, but they are a very large tree (15 to 25 metres) with the unfortunate habit of dropping limbs willy nilly, so should be considered carefully for that position.



The left over calluses from fallen limbs add to their gnarled appearance.




Where they are suitable they are a wonderful changeable tree, with bark colours varying from cream to orange with white, sweet smelling flowers.

They naturally occur on well drained sandstone soils on the Central Coast of New South Wales where there are still some wonderful mature stands.




They have been planted as city trees too. I have noticed them in Oxford Square Sydney, still very young small trees but nevertheless looking beautiful and flowering well, but I do wonder about their long term prospects given their propensity to drop limbs.


The leaves are pinkish when new weathering to dark green, typically gum shaped 6-16 cm long and 2-3 cm wide. They are carried opposite to each other along the stem.





The flowers are simply gorgeous, always white in Angophoras, and very showy as they are in terminal panicles at the tips of branches. The flowering time is listed as November to January in most reference books, but I have photographed them as early as October and as late as February so it varies considerably. Also varying is the floriferousness. Some years you will have the trees smothered in blossom, others not.




The true clincher to tell you whether you are looking at an Angophora or Eucalypt is in the buds and fruits. The buds are very distinctive with little pointy ribs, which unfold to release the stamens. There is no bud cap as there is in Eucalyptus species.



The flowers simply “unwrap” and emerge.


Compare with the obvious bud cap of Eucalyptus maculata.







And the ribbed fruits are also intriguing. Costata means ribbed and the fruit capsule has very prominent ribs. If you are looking at a smooth urn shaped fruit then your tree is not Angophora costata.



Look out for the gnarled appearance of Angophora costata in your neighbourhood

19 October 2008

Sarcopetalum harveyanum

Sarcopetalum harveyanum (meaning of name: Fleshy petals) is common in or near rainforest and is also often found in moist eucalypt forest, chiefly in coastal areas along the eastern seaboard of Australia from Victoria, through New South Wales, right up into Queensland.

You have to be very lucky to see the tiny flowers of Sarcopetalum harveyanum as they are held on short racemes, 3 to 7cm long, and only last a day or so. The flowers are very, very tiny, with petals about 3 mm long - and they pop straight out from the trunk of the vine, generally on the old wood. The old wood of this vine is usually high in the canopy of the rainforest hence the difficulty in spotting the tiny flowers.





Fruit is a globular berry, 5 to 8mm in diameter, slightly flattened. They are brown to begin with, for all the world like a brown lentil; then as they swell and ripen they turn pinkish and then red. They are quite small, yet bigger than you would expect after catching sight of the tiny flowers.

They are odd in the way they can pop out of the ground or an old stalk where there are no leaves, or anything else to give you a clue as to the name of the vine.





The first time I saw this vine fruiting they looked like bunches of grapes hanging in the forest. It took me months of researching to find out what they were.




The leaves of this woody climber are distinctly heart- shaped and, when young, a lovely apple green.



They can be distinguished from other vines with similar shaped leaves by seeing where the stalk joins the leaf. In Sarcopetalum harveyanum the stalk joins the leaf in the bottom of the V or right at the top of the heart.

You can see it more easily in this photograph.



As well there are 7 clear veins radiating from the stalk.

A similar looking vine and often seen together in the rainforest is Stephania japonica, but there the stalk joins the leaf distinctly away from top edge and the leaves are much more rounded.




Something has eaten pieces out of the leaves in this photograph.



Larvae known to feed on

Harveyanum Sarcopetalum


My favourite book for attempting to name the plants on my 10 hectares of rainforest and dry schlerophyll forest is Native Plants of the Sydney District An Identification Guide by Alan Fairley and Philip Moore, published by Kangaroo Press and readily available. It is a great book because almost every plant has a photograph, particularly of the flowers, which is what I always notice first in any plant.
Also
Rainforest Trees of Mainland South-eastern Australia by AG Floyd,published by Terania Rainforest Publishing Lismore, Australia. Also a great book with a wealth of information but no photographs.

Commersonia fraseri




Looking almost like last minute spring snow fall dusting the branches (if we had such a thing in temperate Australia) - and flowering right now, September-October, is a native shrub in the Sterculiaceae family, Commersonia fraseri. If we are lucky it may even continue with the odd extra flower until January. I have noticed a long flowering season is likely if we have a wet spring and summer. When that is the case the shrubs often flower again in March. If you are travelling around the coast the shrubs are most noticeable at the moment where a bridge crosses a creek. There you will see a mass of white flowers in the gully alongside.

On the Central Coast Commersonia fraseri grows into a large shrub or small tree, 2 to 3 m tall. It is often one of the first shrubs to regenerate where clearing has taken place, particularly along river banks, in sheltered gullies, or along roadsides where it can get a little more moisture than average. It is also grows from East Gippsland, Victoria right into south eastern Queensland, wherever there is wet schlerophyll forest or creek-side rainforest.

The flowers are white and sweetly scented, reminiscent of honey. They are placed along the top of the horizontal branches in loose clusters, giving a massed bloom effect to the whole shrub.


Each individual flower is only 5-7mm in diameter but they are massed in groups, each 3-5cm across. Each flower has five sepals, triangular in shape, five long, skinny, ribbon-like petals that are generally longer than the sepals and another five staminoides; (each three lobed with one vertical and two horizontal lobes), narrow and ribbon-like, as long as the petals but more erect.



This arrangement gives a fluffy look to the flowers.


















The fruit is 15 to 25 mm across and covered with soft bristles 5 to 10mm long. They open into five cells, each with two angular, egg-shaped, dull black seeds.




The new leaf branchlets are slender, fawn and covered in a soft down, becoming hairless with age.



The leaves are alternate, simple and variable in shape. Juvenile leaves are broad, jagged and softly hairy, feeling a little like fine, soft velvet, with a fine point at the tip. They are dull on both sides, dark green above, white hairy beneath. Main lateral veins are clearly visible on both sides of the leaf. There are usually five veins, each ending in a larger tooth on mature leaves.




As they age they are more broadly lance shaped to heart shaped, with irregular teeth, two to three teeth per centimeter, often lobed or with a larger tooth at the end of each major lateral vein.

The leaves on these shrubs are always well eaten. Even when very new it is possible to find holes where something has had dinner. (See underside of new leaf above). Whether that is moth or butterfly larva or something else I have not yet been able to determine. This can give quite a straggly, moth eaten appearance to these shrubs


Commersonia fraseri can be grown from cuttings, but with their strong suckering habit care would need to be taken with placement. They would make a good background plant or could be used for screening purposes or utilized as a cover plant when attempting to establish a rainforest. They are very fast growing and quite hardy, accepting at least half shade and tolerant of frost. The sheer number of flowers and the beautiful perfume certainly makes them deserving of a place, if space can be found.

They evidently support wildlife so perhaps space could be found for that reason alone.

A complete list of butterflies and larva supported by the Sterculiaceae family.

References.

My favourite book for attempting to name the plants on my 10 hectares of rainforest and dry schlerophyll forest is Native Plants of the Sydney District An Identification Guide by Alan Fairley and Philip Moore, published by Kangaroo Press and readily available. It is a great book because almost every plant has a photograph, particularly of the flowers, which is what I always notice first in any plant.
Also
Rainforest Trees of Mainland South-eastern Australia by AG Floyd,published by Terania Rainforest Publishing Lismore, Australia. Also a great book with a wealth of information but no photographs

9 October 2008

Eggs and Bacon on the Central Coast.

Don’t think the gold of the wattles has gone – it hasn’t yet, but flowering alongside and adding to the golden glow are many varieties of plants collectively known as Eggs and Bacon.

Why Eggs and Bacon? I don’t know, maybe because the flowers are yellow and brown? Many plants contribute to the Eggs and Bacon look; the common link is that they are all pea-shaped flowers, in varying shades of yellow and brick red, and belonging to the Fabaceae family. In each local area the Eggs and Bacon look is comprised of different indigenous plants.



On the Central Coast of New South Wales our Eggs and Bacon include; Daviesias, Podolobiums, Pultenaeas and Dillwynnias. Along the middle of the highways and on the edges of the road during September and October there are masses of yellow and brown Eggs and Bacon brightening everyone’s day.

If you visit the bush at this time of year you will surely have been scratched by these plants. The fire trails on the Central Coast are often edged with them, which tells us that they like disturbed soil or that they are one of the first to come back when bush has been cleared; or even that they like a bit more sunshine than they would receive in a close canopied forest. They enjoy their place in the sun while they can, before being replaced by slower, but eventually larger growing shrubs or trees.

In past years I used to ride my horse along the trails, and so I learnt to recognize the plants by the ouch factor, as many Eggs and Bacon score very highly on that score. My horse wasn’t too fond of the plants either, she was a sensitive soul and they are generally quite prickly and can cause nasty scratches if you get too close.


Daviesia ulicifolia is one that comes to mind.


The flowers are quite tiny, but look at the spines! And yes they are as sharp as they look. You do not want to be dragged through these bushes; making you dog come back, for example. Yes, been there too.

Enmasse they are quite beautiful. Very eggs and bacony.



All Daviesia have very unusual triangular seedpods, and as no other pea-flowers on the Central Coast have such distinctive pods these are very useful for identifying the genus.


As they ripen they turn quite a pretty brown and look almost as attractive as the flowers for a few more weeks.


Another Daviesia adding to the Eggs and Bacon look is Daviesia squarrosa. These are undergoing some name division at the moment, so all is not yet clear in the name department.

Daviesia squarrosa is a small shrub with delightful heart shaped leaves -topped with vicious spines. Pretty but don’t touch!



Different shades of flowers exist within the family, but basically still yellow and red.


The leaves and flowers are very tiny, both perhaps 6mm long but when there is a tiny flower in each leaf axil you have a very beautiful massed effect. Again triangular pods.


Continuing the eggs and bacon theme and jump to Podolobium aciculiferum previously known as Oxylobium aciculiferum.
This not only has pointy heart shaped leaves like Daviesia squarrosa but also sharp spines like Daviesia ulicifolia. The best of both. Have a look.



The whole shrub is a pretty fresh green early in the season, and appealingly graceful in form, but beware falling into this plant.


A close relative and more prickles are found in Podolobium ilicifolium, formerly Oxylobium ilicifolium, commonly called Native Holly or Prickly Shaggy Pea - and you can see why when you look at the leaves of this plant.
Very Holly like indeed, and each point is viciously sharp. Note the stick insect in the middle.

This one is a much taller grower than the others and can reach up to 3m of prickly plant. The leaves are 2 to 4 cm long, strongly veined, with 3 or more lobes each ending in a prickly point. The leaves change depending on the habitat, there can be more lobes or less, and the size of the leaf alters too. The only thing that doesn’t change is the prickles.



The flowers are generally yellow with red (or reddish brown) keel. The flowers are much larger than the other flowers I have discussed. The shrub in flower is very handsome indeed.


There is no mis-diagnosing the seedpods on this one, though small they are typically pea shaped.


Group all the plants together and you have a very pretty effect.



Podolobium ilicifolium is available from time to time in native nurseries. It is a great plant to attract little birds to your garden as the spiny leaves gives them some protection. It needs good drainage and some shade. It is often not very long lived though.


And finally one without spines, Pultenea villosa. Looking very pretty on the Central Coast right now (October)



This one forms a graceful weeping shrub, 2 m high by 3 m across so I am told, but I’ve never seen it grow to that size in my neck of the woods. It is many branched and spreading with flowering occurring quite heavily along the whole branch with the weight of the flowers contributing to the weeping appearance.


Fabaceae in general support various Australia butterflies.

28 August 2008

CUPANIOPSIS ANACARDIOIDES: known as Tuckeroo

The Tuckeroo, Cupaniopsis anarcardioides, first came to my attention a number of years ago, gosh 20 or so, when an enthusiastic gardener friend of mine was telling me about a stand of Tuckeroos that had been identified at Tuggerah and horrors, the land on which they stood belonged to one of the power stations and they wanted to bulldoze the lot. I’m not sure what the outcome of that story was but the name Tuckeroo has stayed with me ever since. Confession time - I wasn’t that enamoured of native Australian trees at that time but hankered after luscious exotics.

Now Tuckeroos and I have become good friends. I’ve noticed them growing in Surry Hills, Sydney and proving to be attractive, tough street tree, coping in a tiny patch of dirt in a sea of concrete on a busy road. It was the fruit which first caught my eye. Rather large three sided orange berries, in bunches all over the tips of the branches.



I saw them again on a recent trip to Queensland and realized again how beautiful they are. They are obviously much more at home in the sub tropics and grow into very handsome trees, still the same inconspicuous flowers but such gorgeous orange fruits!

They are being utilized as a tough evergreen tree in all sorts of places in Brisbane I noticed and also alongside the carpark at the Sunshine Coast airport.

I do like it when I meet up with old friends, both human and plants.

The shortish trunk is rather handsome too being pale to dark grey with raised horizontal lines.



The flowers are relatively inconspicuous, OK let’s be honest, if you weren’t looking for them you wouldn’t notice them at all as they are very tiny and a pale, creamy green. They are about 5mm in diameter occurring on axillary branched panicles. The sepals are round, petals small with about 8 to 10 stamens up to 5mm long. The flowers appear in winter; but the ensuing 3 lobed fruits are the true attraction.



They are a large, three-lobed capsule, green to begin with and then turning a bright orange - very showy indeed. They split when mature to reveal black or dark brown seeds nearly covered by a bright red aril. The trees are most beautiful in late winter to early spring when the fruits ripen.







The foliage is dark green, thick and rather leathery. The leaves are alternate pinnate compound, with 2-6 pairs of leaflets and about 7 – 10 cm long. Each leaflet is a rather odd obvate shape with a blunt or notched apex, dark glossy green on top and a lighter green beneath. The veins are distinct on both the top and bottom of the leaves.



Tuckeroos deserve to be grown more readily as a street tree, anything to get rid of all the plane trees really. They are an evergreen, tough hardy tree that can adapt to difficult sites and even pollution laden air. They can grow up to about 8 metres tall with a similar width and have a full rounded crown. While they appreciate full sun they cope quite well with partial sunlight, or even quite a degree of shade. They can cope with many different soil conditions so are quite adaptable. The only thing they dislike is to have their roots remaining in water for any length of time. They are tolerant of coast exposure and salt spray too. They would make a good nurse tree for people attempting to regenerate bush land. They are frost tolerant but probably prefer the warmer northern coastal regions along the east coast of Australia.

15 August 2008

When birds turn...........

Sydney Botanical Gardens are beautiful any time of the year. I try to go as often as I can to watch the gardens change with the seasons. The harbourside location is hard to beat too.

Last week while I was there I couldn't help noticing the figs laden with fruit. One such is Ficus virens. There are a number of different figs in the gardens so this year there is plenty of food for the local birds and fruitbats. Tis a season of plenty at the moment.



Unfortunately the plenty also refers to the number of fruit bats living in the gardens, I have heard as high as 30,000. It is quite a wonderful and unusual experience to place yourself under the bat path and watch them exit each evening at dusk to fly to feed in nearby suburbs. Sadly there numbers are destroying large parts of the garden as they damage emerging shoots or break off branches.

But back to the fig.
This tree can, at most, be just over 200 years old and so is just a baby.


Underneath the fig, if you look carefully, you will see a couple feeding the birds. These are not pigeons or doves or other softy type birds. These are Australian sulphur crested cockatoos, with huge beaks meant for cracking open nuts and ripping holes in tree trunks to extract tasty grubs. There are signs around begging people not to feed the birds, but they are ignored. I would probably ignore them too if I weren't such a Goody Twoshoes.

Ignore at your peril. Here is what happens when you run out of food but the birds haven't run out of hunger.

12 July 2008

Superb Lyrebird - Menura novaehollandiae

We found a huge nest built on the ground back in May - way up in the bush behind our rainforest. See entry for 18th May, 2008.

Much excitement today.

Today we paid the nest our third visit after leaving it alone for a few weeks.

We knew there was a bird in residence and we had guessed it was a Lyrebird. This time we were trying hard to be really quiet in the hope that we would get a close look at her.

A couple of weeks ago we tramped up to visit the nest and surprised her. She in turn surprised us because she let out a blood curdling scream and dashed into the scrub. All that was left behind was an echo in our ears, along with the impression of a streamlined dark bird with a tail as long as her body.

Naturally we didn't want to poke around her home without her permission so I stayed where I was and Frank crept up and peeped in. He saw no eggs, but the nest certainly looked as if it was being made ready for such an event. There was the beginnings of a layer of down from her body to help keep her egg warm.

Today’s excitement was due to us spotting the nest occupant peeking her head out to see what on earth was making the racket in her usually quiet peaceful neighbourhood.





Again she beat a hasty retreat though this time without so much as a peep, again I stayed where I was and Frank peeked in and quickly snapped a couple of photographs. He was pretty sure he had seen an egg and when we looked at the photographs we saw he was right. He had.








We were really, really excited. Lyrebirds are such shy beauties that we haven't seen many in our 20 years of residence. A couple on early morning horse rides, and two feathers once left behind in one of our gardens. We often heard them calling, at least we figured it was Lyrebirds by the different bird calls in quick succession we were treated to on our walks.

Her nest is constructed with largish sticks, bigger than twig size but not branches if that helps. It is quite large, about a metre across, placed carefully on an embankment. There is a lot of leaf litter on the forest floor which she has obviously scratched around in for food.

David Attenborough included a segment on Lyrebirds in one of his Wildlife programs. It shows the wonderful mimicry they are known for.

Further information.