Species of flowering plant
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Euphorbia paralias, the Sea Spurge, is a species of flowering plant in the family Euphorbiaceae, native to Europe, northern Africa and western Asia.
The species is widely naturalised in Australia. It invades coastal areas, displacing local species and colonising open sand areas favoured by certain nesting birds. Major eradication programs have been undertaken in some areas, for example by Sea Spurge Remote Area Teams in Tasmania, with great success.
Description.
"E. paralias" is an erect, glaucous, perennial plant, growing up to tall. It has many stems, dividing into 3–5 fertile branches, each branching further. The cauline leaves (arising from the stem, without a stalk) are crowded, overlapping, elliptic-ovate (ovate toward the top of the stems), fleshy and long. Leaves on fertile branches are circular-rhombic or reniform. The flower head is on a solitary cyathium, found in upper forks or at the apex, surrounded by bell-shaped bracts. Female flowers have styles that divide into two short stigmas, flowering from September to May. The fruit is a capsule, flattened from above or nearly spherical, with deep furrows, and wrinkled on keels. Seeds are ovoid, pale-grey and smooth. There is a kidney-shaped fleshy outgrowth from the seed coat.
Habitat.
"E. paralias" inhabits sandy sea-shores.
References.
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