Neomillspaughia, S. F. Blake, 1921

Ortiz-Díaz, Juan Javier, Arnelas, Itziar, Tun, Juan & Flores, José Salvador, 2013, Neomillspaughia hondurensis (Polygonaceae), a new species from Central America, Phytotaxa 144 (1), pp. 56-60 : 60

Key to the species of Neomillspaughia from Mexico and Central America

1. Leaf blades 14 − 20(− 30) cm width, emarginate at the apex 25 − 40(− 50) mm; inflorescence (10 −)13 − 20 × 11 − 26 cm with a rachis of 2–3 mm width; perianth 7–8(− 10) × 3–4(− 4.8) mm, inner tepals 0.8 − 1 mm width ...... N. paniculata

- Leaf blades 6 − 14 cm width, obtuse or emarginate at apex 5 − 25 mm; inflorescence 7 − 13(− 17) × 2 − 15(− 20) cm with a rachis of 0.6 − 1.3 mm width; perianth 8–14 × 4 − 6 mm, inner tepals 1.7 − 2 mm width ............................................ 2

2. Inflorescence a panicle with (3–)6−10 racemes in a rachis well differentiated, 8 − 15(− 20) cm width; achene 2.5–3(− 4) × 1.8–2 mm ......................................................................................................................................... N. emarginata

- Inflorescence a panicle with 1–3 racemes in a rachis not well differentiated, 2 − 7 cm width; achene 4.0 − 5.5 × 2.5 − 3.5 mm ......................................................................................................................................................... N. hondurensis