Fruit glabrous but shallowly verruculose (less apparent in mature fruit), brownish, elliptic-obovate, ± 5–9 × 5–7 mm., rounded above and below or slightly emarginate at the apex, margins thick, fertile centre ± 2.5 mm. wide; commissural vittae 2, long, sometimes rather obscured by overlying tissue; stylopodia conical, purplish; styles very short, divergent, shorter than the stylopodia, glabrous; carpophore deeply divided.
Ovary prominently ridged, covered with small low whitish verruculae.
Petals purplish black to brown, yellow, yellowish green or white, glabrous, ± 1.25 mm., with branched brownish vittae, broadly obovate-obcordate.
Stout dingy or grey-green perennial herb, often ± purplish suffused, 0.3–1.2 m., branched from near the base upwards with long, ascending branches, or in taller forms often branched only above.
Calyx distinct, persistent, in fruit divergent or incurved, teeth lanceolate, ± 0.75 mm.
Inflorescence polygamous; umbels with 10–18 subequal to very unequal scabrid, sulcate rays 1–5 cm. long; involucre of 4–10 linear to lanceolate, 3–18 mm., ciliate bracts; partial umbels ± 10–35-flowered, pedicels scabrid, 2–7 mm.; involucel of 4–10 linear to elliptic, 2–15 mm., ciliate bracteoles; peduncles 6–14 cm., sulcate, scabrid-hairy.
Basal leaves ± 10–50 × 9–19 cm., lamina broadly oblong-elliptic to oblong-ovate, 1–2-pinnatisect, the pinnae broadly decurrent along the rhachis, simple to pinnatisect with 1–2 pairs of pinnules; lobes oblong to elliptic, ± 0.7–8 × 0.5–3 cm., irregularly denticulate, prominently nerved, ± densely covered with short scabrid hairs, sometimes ± glabrescent in fruit; petiole none in short forms, up to 30 cm. in tall ones, sheath short and broad to narrow and tapering, striate, scabrid to subglabrous; stem leaves usually sessile, rapidly reducing in size, pinnatisect or trisect, more rarely the uppermost simple and bract-like.