Tagetes, Linnaeus, 1753

Schiavinato, Dario J. & Bartoli, Adriana, 2018, About the identity of Tagetes pauciloba (Asteraceae, Tageteae), Phytotaxa 362 (2), pp. 200-210 : 208

Key to Argentinian species of Tagetes with perennial habit

1. Phyllaries 2–3 ....................................................................................................................................................................... T. riojana

– Phyllaries 5–8.....................................................................................................................................................................................2

2. Limb of ray florets 12–14 mm long; leaf lobes ovate, 5–8 mm wide, sharply serrate................................................ T. campanulata

– Limb of ray florets 2.5–9 mm long; leaf lobes linear-ovate, 0.5–3.5 mm wide, entire or dentate but not serrate............................3

3. Leaves subfleshy, 1–3 × 0.5–1 cm, limb of ray florets ca. 2.5 mm long............................................................................... T. perezii

– Leaves herbaceous, 1–7 × 0.5–4 cm; limb of ray florets (3–) 5–9 mm long..................................................................... T. pauciloba