Scrophularia

Ranjbar, Massoud & Rahchamani, Narges, 2022, Taxonomic revision of the broad-margined calyx species of Scrophularia (Scrophulariaceae) in Iran, with one new species, Candollea 77 (1), pp. 57-70 : 60

Key to the broad-margined calyx species of Scrophularia in Iran

1. Corollas 4.5–6 mm long; styles 3–4.5 mm long ........... 2

1a. Corollas 6–9 mm long; styles (4–) 4.5–7.5 mm long .... 4

2. Stems glabrous ..................................... S. haematantha

2a. Stems loosely to densely farinaceous-pubescent .......... 3

3. Inflorescences 15–25 cm long; calyx margins up to 0.5 mm wide; staminodes as long as lower corolla lobe ............... ..................................................................... S. pruinosa

3a. Inflorescences 20 – 45 cm long; calyx margins up to 0.2 mm wide; staminodes shorter than lower corolla lobe ...................................................................... S. rosulata

4. Corollas> 8 mm long .................................................. 5

4a. Corollas <8 mm long .................................................. 6

5. Plants 90–110 cm tall; calyx margins purple; staminodes orbiculate ............................................. S. mesopotamica

5a. Plants 60–80 cm tall; calyx margins white; staminodes reniform .......................................................... S. valida

6. Staminodes oblong to orbiculate ................................. 7

6a. Staminodes linear to oblong ........................................ 8

7. Leaves glabrous to sparsely glandular or very sparsely farinaceous-pubescent; inflorescence bracts up to 20 mm long; calyces 2.5–3 mm long, with margins up to 1.5 mm wide; staminodes as long as lower corolla lobe ............... ................................................................... S. sanguinea

7a. Leaves glabrous to very sparsely farinaceous-pubescent; inflorescence bracts up to 3 mm long; calyces 3–3.5 mm long, with margins up to 1 mm wide; staminodes shorter than lower corolla lobe ........................... S. sulaimanica

8. Peduncles up to 25 mm long; corollas 6.5– 7 mm long; calyx margins up to 1.5 mm wide; staminodes longer than lower corolla lobe ................................. S. sardashtensis

8a. Peduncles up to 20 mm long; corollas 7–8 mm long; calyx margins up to 1 mm wide; staminodes shorter than lower corolla lobe .................................................... S. kollakii