''Pararchidendron pruinosum'' is an

Australian Australian(s) may refer to: Australia * Australia, a country * Australians, citizens of the Commonwealth of Australia ** European Australians ** Anglo-Celtic Australians, Australians descended principally from British colonists ** Aboriginal Au ...

rainforest tree growing from the

Shoalhaven River The Shoalhaven River is a perennial river that rises from the Southern Tablelands and flows into an open mature wave dominated barrier estuary near Nowra on the South Coast of New South Wales, Australia. Location and features The Shoalhaven ...

(34° S) in

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

Herberton Herberton is a rural town and locality in the Tablelands Region, Queensland, Australia. In the , the locality of Herberton had a population of 855 people. Geography Herberton is on the Atherton Tableland in Far North Queensland. It is situa ...

(17° S) in north

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_ ...

. It is also found in

New Guinea New Guinea (; Hiri Motu Hiri Motu, also known as Police Motu, Pidgin Motu, or just Hiri, is a language of Papua New Guinea, which is spoken in surrounding areas of Port Moresby (Capital of Papua New Guinea). It is a simplified version of ...

and

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

. Common names include Snow-wood, Tulip Siris and Monkey's Earrings. The habitat of the Snow-wood is tropical, sub-tropical, warm temperate, littoral and riverine rainforest. Like most legume species, it fixes atmospheric nitrogen in the soil via its symbiotic partnership with root bacteria - trading the bacteria starches in exchange for nitrogen. It can be seen growing on sand within earshot of

Seven Mile Beach, New South Wales Seven Mile Beach is a long beach with strong historical reference just south of Gerringong in the Shoalhaven area of New South Wales, Australia. History In 1933 Seven Mile Beach was used by Sir Charles Kingsford Smith as the runway for the f ...

Description

Snow-wood is a small to medium-sized tree, reaching 15 metres in height and a 35 cm in trunk diameter. The reddish trunk and lacy pinnate leaves give a pleasing appearance. The trunk of ''Pararchidendron pruinosum'' is cylindrical, and not buttressed at the base. The bark is dark reddish brown patterned with corky pustules.

Leaves

The leaves are alternate and

bipinnate The following is a list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular o ...

. The main leaf stalk has one to three pairs of secondary leaf stalks, opposite or nearly so on the main stalk. Five to eleven leaflets alternatively arranged on the secondary leaf stalks. Leaves entire, lanceolate, four to five cm long, 13 to 20 mm broad. The tip tapers to a point, the leaf base is

oblique Oblique may refer to: * an alternative name for the character usually called a slash (punctuation) ( / ) * Oblique angle, in geometry *Oblique triangle, in geometry *Oblique lattice, in geometry * Oblique leaf base, a characteristic shape of the b ...

. Smooth and green both surfaces, slightly paler below. Leaf venation is obvious, with a raised midrib evident on both upper and lower sides.

Flowers and fruit

Flowers fluffy white or greenish, fragrant, though later turning yellow. Flowering period is from October to January. The fruit pod matures from February to June. Resembling

Acacia ''Acacia'', commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus na ...

fruit pods. Very twisted, and flattened. Seeds are black, shiny and mostly flat, oval in shape. Scarification of the seeds is advised to assist germination, which is slow but fairly reliable.

References

* Floyd, A.G., ''Rainforest Trees of Mainland South-eastern Australia'', Inkata Press 1989, {{Taxonbar, from=Q7135805 Mimosoids Fabales of Australia Flora of New South Wales Flora of Queensland Plants described in 1844 Trees of Australia