Onobrychis farimanensis, Ranjbar & Askari, 2018

Ranjbar, Massoud, Askari, Ali, Karamian, Roya, Joharchi, Mohmad Reza & Tolui, Zeinab, 2018, A new species of Onobrychis sect. Onobrychis (Fabaceae) from Iran, Phytotaxa 347 (4), pp. 285-291 : 286

Key to Onobrychis farimanensis and similar species in Iran

The new species and similar species of sect. Onobrychis subsect. Macropterae in Iran may be distinguished through the following key:

1 Plants with wing petals 3–5 mm long.....................................................................................................................rest of Onobrychis

- Plants with wing petals 5.5–11 mm long..................................................................................................... 2 (subsect. Macropterae)

2 Pod> 9–10 mm long; standard 12–14 mm long; wing 9–11 mm long..............................................................................................3

- Pod <9–10 mm long; standard 7.5–10.4 mm long; wing 5.5–8.0 mm long......................................................................................4

3 Corolla milky yellow; number of pod teeth 7–10; teeth 0.2–0.5 mm long .................................................................. O. alamutensis

- Corolla pale pink-violet; number of pod teeth 6–7; teeth 15–20 mm long ................................................................ O. farimanensis

4 Plants densely covered by spreading hairs 0.3–0.7 mm long; leaflets 5–8 mm long............................................................ O. patula

- Plants loosely to densely covered by appressed hairs 0.2–0.3 mm long; leaflets 15–25 mm long....................................................5

5 Pods glabrous ...................................................................................................................................................................... O. assadii

- Pods densely covered by appressed hairs...........................................................................................................................................6

6 Leaflets with upper surface glabrous and bracts ≥ 3.2 mm long................................................................................ O. mucronifolia

- Leaflets upper surface with loosely to densely appressed hairs, bracts ca. 3 mm long......................................................................7

7 Plants suffrutescent; calyx 4.5–5.6 mm long; teeth subulate, as long as tube............................................................ O. ptychophylla

- Plants herbaceous; calyx 6–7 mm long; teeth linear-subulate, two to four times as long as tube......................................................8

8 Pods with 6–7 teeth, leaflets ovate to elliptic, distinctly mucronate at the apex, standard 10.8–11 mm long .......... O. gontscharovii

- Pods with 4–6 teeth, leaflets elliptic, acute or obtuse, slightly mucronate at the apex; standard 7.5–9.0 mm long .............. O. verae