Rhabdosciadium, Boissier, 1844

Lyskov, Dmitry, Kljuykov, Eugene, Güner, Ebru Doğan & Samigullin, Tahir, 2017, Molecular phylogeny of the genus Rhabdosciadium (Apiaceae) with description of a new species R. anatolyi from Hakkâri province, eastern Turkey, Phytotaxa 331 (2), pp. 253-262 : 255

Key to species of Rhabdosciadium

1. Umbels lateral, all sessile or short-pedunculate (to 5 mm)................................................................................................................2

- Umbels terminal or lateral, peduncle 1.5–14 cm ................................................................................................................................3

2. Stem dichotomously branched throughout......................................................................................................................... R. straussii

- Stem dichotomously branched only in lower and middle parts ............................................................................. R. microcalycinum

3. Leaves up to 30–60 cm long, leaf segments linear, elliptic or trilobite..............................................................................................4

- Leaves up to 30 cm long, leaf segments linear-lanceolate and toothed.............................................................................................5

4. Leaf segments linear and terete, petals white.................................................................................................................... R. petiolare

- Leaf segments elliptic or trilobite, petals white with brownish lines ................................................................................. R. anatolyi

5. Stem dichotomously branched throughout; peduncle up to 14 cm long, ebracteate; petals white, glabrous.....................................6

- Stem dichotomously branched only in lower and middle parts; peduncle up to 20 cm long, 1–2-bracteate; petals white with brownish lines, pilose on the dorsal side............................................................................................................................ R. urusakii

6. Leaves with linear-lanceolate segments; mericarps 18–23 mm; stilopodium distinct, not embedded in corky pericarp, conical.. … ..................................................................................................................................................................................... R. oligocarpum

- Leaves with ovate-oblong segments; mericarps 10–15 mm; stilopodium short-conical, embedded in corky pericarp...... R. aucheri