Coronanthereae, Fritsch. Thus, 1893

Morel, Jérémie, Duminil, Jérôme & Munzinger, Jérôme, 2021, Bopopia, a new monotypic genus of Gesneriaceae (Gesnerioideae, Coronanthereae) from New Caledonia, European Journal of Taxonomy 736, pp. 82-101 : 87

Key to the subtribes in the tribe Coronanthereae

1. Epiphytic creepers and subshrubs to 1 m tall; leaves small, 0.5–4 cm long; inflorescence axillary, solitary; stamens 2–4; fruit an indehiscent berry .................................... subtribe Mitrariinae Hanst.

– Tree to shrubs> 2 m tall; leaves small to large, 2–25 cm long; inflorescence an axillary cyme or indeterminate thyrse ( Fig. 2 ), or flower solitary; stamens 4–5; fruit a dry capsule or an indehiscent berry (unknown in Bopopia gen. nov.) ............................................................................................. 2

2. Trees and shrubs, 2–15 m tall; leaves toothed or weakly toothed, small to large, 2–25 cm long; inflorescence an axillary cyme, peduncle short, generally 3–8-flowered, or flower solitary ( Rhabdothamnus A.Cunn. ); flowers zygomorphic; stamens 4, staminode 1, anthers coherent, in coronal formation; fruit an ovoid dry capsule, four-valved, valves apically coherent, dehiscing by basal slits, septicidally then loculicidally .................................... subtribe Coronantherinae Fritsch

– Trees, 6–13 m tall; leaves entire or toothed, large, 5–20 cm long; inflorescence an axillary cyme, peduncle short to long, 1–3-flowered or an indeterminate thyrse with 3–5 levels of branching ( Bopopia gen. nov.); flowers zygomorphic or actinomorphic; stamens 4–5, anthers free or coherent; fruits beaked, fleshy, and indehiscent, or dry, woody, two-valved, apically septicidally dehiscent, or four-valved, dehiscing septicidally plus loculicidally (unknown in Bopopia gen. nov.) .................... ...................................................................... subtribe Negriinae V.L.Woo, J.F.Smith & Garn. -Jones

Figures

Fig. 2. Schema of the inflorescence of Bopopia parviflora Munzinger & J.R.Morel gen. et sp. nov., an indeterminate thyrse. Only four axes are represented on this schema (while up to 5 were seen on herbarium specimens).