Tordylium
Al-Eisawi, D. & Jury, S.L. 1988: A taxonomic revision of the genus Tordylium L. (Apiaceae). – Bot. J. Linn. Soc. 97: 357-403Meikle, R.D. 1977: Flora of Cyprus 1 but modified and rearranged
| 1 | Plants retrorsely setose; sepals, petals, styles, stylopodia and mericarps covered with strigose hairs |
| 1' | Plants scabrous to villous; sepals, petals, styles, stylopodia glabrous, mericarps covered with vesiculous hairs |
| 2 | Fruits 3 mm wide |
| 2' | Fruits 5-10 mm wide |
| 3 | Leaf segments of upper cauline leaves deeply pinnatisect; fruits dimorphic, the outer flattened, disk-like, the inner hemispherical or cup-shaped ; umbels conspicuously
radiant
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| 3' | Leaf segments of upper cauline leaves crenate, toothed or shortly lobed, not pinnatisect; fruits uniform, all flattened and disk-like
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| 4 | Bracteoles very long and conspicuous, up to 20 mm. long, greatly exceeding the umbellules; mericarps with thickened, moniliform wings
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| 4' | Bracteoles short, less than 10 mm. long, inconspicuous, shorter than, or not much exceeding the umbellules
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