Euphorbia 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.{{cite web |url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Euphorbia~paralias |title=
Euphorbia paralias |access-date=2008-12-23 |author= James, T.A. & G.J. Harden ==Habitat==