Two new species of Rhipidoglossum (Orchidaceae, Angraecinae) from Central Africa, probably pollinated by settling moths Author Macedo, Arthur 0000-0003-1238-493X Jardim Botânico da Universidade de Coimbra, Calçada Martim de Freitas, Coimbra, Portugal & Centre for Functional Ecology, Laboratório Associado TERRA, Departamento de Ciências da Vida, Universidade de Coimbra, Coimbra, Portugal & Herbarium et Bibliothèque de Botanique africaine, Université Libre de Bruxelles, Campus de la Plaine, Brussels, Belgium Author Droissart, Vincent 0000-0001-9798-5616 Herbarium et Bibliothèque de Botanique africaine, Université Libre de Bruxelles, Campus de la Plaine, Brussels, Belgium & AMAP Lab, Université de Montpellier, IRD, CNRS, CIRAD, INRAE, Montpellier, France & Missouri Botanical Garden, Africa and Madagascar Department, St. Louis, MO, USA Author Janeček, Štěpán 0000-0003-1285-6490 Department of Ecology, Faculty of Science, Charles University, Viničná 7, CZ- 12844 Prague, Czech Republic Author Klomberg, Yannick 0000-0002-8566-9728 Department of Ecology, Faculty of Science, Charles University, Viničná 7, CZ- 12844 Prague, Czech Republic Author Trovó, Marcelo 0000-0002-0478-2332 Departamento de Botânica, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho 373, Cidade Universitária, Rio de Janeiro, Brazil Author Stévart, Tariq 0000-0002-6212-0361 Herbarium et Bibliothèque de Botanique africaine, Université Libre de Bruxelles, Campus de la Plaine, Brussels, Belgium & Missouri Botanical Garden, Africa and Madagascar Department, St. Louis, MO, USA & Botanic Garden Meise, Domein van Bouchout, Meise, Belgium Author Farminhão, João 0000-0002-8811-9895 Centre for Functional Ecology, Laboratório Associado TERRA, Departamento de Ciências da Vida, Universidade de Coimbra, Coimbra, Portugal & Herbarium et Bibliothèque de Botanique africaine, Université Libre de Bruxelles, Campus de la Plaine, Brussels, Belgium text PhytoKeys 2026 2026-04-24 274 1 30 journal article 315031 10.3897/phytokeys.274.184429 010953f0-3e0a-4a12-8866-93fc18f36a0c

Table 1. Diagnostic traits of R. acuminifolium sp. nov. and R. delepierreanum, its closest morphologically related species.

	R. acuminifolium sp. nov.	R. delepierreanum
Leaves	narrowly elliptic to narrowly oblong, apex very unequally bilobed, one lobe acute to acuminate, 56–197 × 14–37 mm	elliptic to elliptic-oblong, apex shortly unequally bilobed, 75–10 × 20–35 mm
Inflorescence	17–25 - flowered, up to 102 mm long	12–20 - flowered, up to 130 mm long
Dorsal sepal	elliptic, 5–5.5 × 3–3.2 mm	elliptic, 4–4.2 × 2.5–3 mm
Lateral sepals	narrowly elliptic, 8–8.5 × 2.3–2.5 mm	oblong, 6–6.2 × 1.5–2 mm
Petals	elliptic to ovate, 5.8–6 × 3.3–3.5 mm	elliptic to widely elliptic, 4–4.2 × 3.5–4 mm
Lip	flabellate, slightly bilobed, lateral margin entire, apical margin incised 5.6–7.5 × 11–12 mm	flabellate, lateral margin crenulate, apically emarginate, 7–7.2 × 8–8.2 mm
Spur	14.2–15 × 0.2–2 mm	6–8 × 0.8–1 mm
Column	2.2–2.4 × 1.6–1.8 mm	1.2–1.3 × 0.8–0.9 mm
Rostellum midlobe	midlobe oblong with globose apex, midlobe 1.7–1.8 × 0.7 mm	midlobe oblong with globose apex, midlobe 0.4 × 0.2 mm