Tordylium apulum L., it is an annual herb, erect or ascending, up to 10-60 cm tall, softly and sparsely pubescent, stout much branched with striate or sub angular, densely hairy at the base, solid stem. Basal and lower cauline leaves unipinnate into broadly ovate or suborbicular, 1-2.5 x 0.8-1.5 cm, truncate or widely cuneate obtuse, deeply crenate or obtusely lobuled ultimate segments; upper cauline leaves divided into oblanceolate or linear obcuneate, sparsely pilose segments. Umbels (2-) 5-8 (-20)-rayed, on scabrous, terminal, 3-12cm long peduncles; rays ± equal, 1-4cm long, sub scabrous, patent-sub erect, bracts 4-6, subulate, 2-10 x 0.5-0.8 mm, patent, sparsely hispid, persistent. Umhellules 10-15-flowered. Pedicels thin, 3-4 (-5) mm long, hispidulous. Bracteoles akin to bracts but smaller in size. Petals white, obovate, one petal of outer flowers radiant, much enlarged, deeply and equally bilobed, 5-9 x 4-7 mm, appearing like 2 large petals, the other petals broadly oblong-obovate, as wide as long, entire or shallowly emarginate and incurved at lips. Anthers greenish. Stylopodium absent. Fruit broadly elliptic or suborbicular, 5-10 x 5-8 mm, pale brown, narrowly notched at tips; mericarps with vesicular hairs on dorsal sides, strongly thickened and moniliform on pallid margins; ribs obscure; commissural oil ducts 8-10.
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