
Appearance
"Commelina cyanea" is a trailing herbaceous perennial plant, whose stems grow along the ground. It readily roots at the nodes when they come into contact with the soil. They die off in winter. The leaves are ovate to narrow-ovate, and measure 2–7 cm long by 0.5–1.5 cm wide. The flowers can occur at any time from spring to autumn. They are deep blue and about 1.5 cm in diameter, followed by a capsule bearing 2-5 2–3 mm long seeds.
Distribution
The range across eastern New South Wales, from Narooma northwards, up into Queensland. It also occurs on Lord Howe Island, and Norfolk Island. It grows in wetter shaded areas in forest habitats.
Habitat
The range across eastern New South Wales, from Narooma northwards, up into Queensland. It also occurs on Lord Howe Island, and Norfolk Island. It grows in wetter shaded areas in forest habitats."Commelina cyanea" is pollinated by a variety of native bees such as "Nomia aurantifer", "Amegilla pulchra", halictid and colletid bees, and syrphid flies. Wallabies and rabbits eat the vegetation. Vegetation is also possibly dispersed by water.
Uses
The leaves are used as an edible vegetable. The leaves were used by early non-indigenous colonists to alleviate scurvy, and hence its common name.Attractive in flower, "Commelina cyanea" adapts readily to cultivation and can be grown as a groundcover or in hanging baskets. It is easily propagated from cuttings. It does resemble the introduced weed wandering Jew, but the latter has white flowers and a segmented stem, a weak root system. It also lacks the hairy leaf sheathes of "C. cyanea". However, "C. cyanea" can itself be weedy in gardens at times.
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