Pleurospermum Hoffm.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 343

49. Pleurospermum Hoffm. 1

Leaves 2- to 3-pinnate. Sepals small. Petals white, suborbicular, shortly clawed, papillose within. Fruit ovoid-oblong, slightly compressed laterally; mesocarp spongy, often breaking down and leaving an air-space betweenexocarp and endocarp as the fruit ripens. Ridges prominent, often with narrow, undulate wings; vittae solitary.

Leaf-lobes sparsely hairy on margins and on veins beneath, abruptly contracted to the acute apex; bracts entire or shallowly lobed 1. austriacum

Leaf-lobes densely hairy on margins and on veins beneath, gradually narrowed to the acute apex; bracts usually deeply pinnatisect 2. uralense