Friday, 8 April 2016

WERRIBEE RIVER

The Werribee River is a perennial river of the Port Phillip catchment that is located on the plain west of Melbourne, Victoria, Australia. The headwaters of a tributary, the Lerderderg River, are north of Ballan near Daylesford and it flows across the basalt plain, through the suburb of Werribee to enter Port Phillip. A linear park follows the Werribee River along much of its course. In total the Werribee River completes a journey of approximately 110 kilometres.

The river flows through the Werribee Gorge State Park before being utilised for irrigation of market gardens at Bacchus Marsh, then through Werribee where it is crossed by the Maltby By-pass. It then flows through the Werribee Open Range Zoo in Werribee Park, and finally the small coastal settlement of Werribee South before entering Port Phillip. The Western Treatment Plant, a sewage treatment site, is located near the mouth of the river, and supplies irrigation needs to the zoo.

The weeds shown here are, in the second photo, Rumex obtusifolius (Polygonaceae) - Common dock (round-leaved dock), which produces large spreading leaves about 30 cm long, the whole plant reaching  60 to 90 cm in height. In the third and fourth photo, Lady's Thumb Persicaria maculosa (Polygonaceae), an annual herb up to 80 cm (31 in) tall, with an erect rather floppy stem with swollen joints. The leaves are alternate and almost stalkless. The leaf blades often have a brown or black spot in the centre and are narrowly ovate and have entire margins. Each leaf base has stipules which are fused into a stem-enclosing sheath that is loose and fringed with long hairs at the upper end. The inflorescence is a dense spike. The perianth of each tiny pink flower consists of four or five lobes, fused near the base.

This post is part of the Friday Greens meme,
and also part of the Floral Friday Fotos meme.




2 comments:

  1. I find this "weed" very nice and even your photos.
    Kind regards, ZamJu

    ReplyDelete
  2. Very interesting plants, these weeds... Lovely green!

    ReplyDelete

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