7.2 Pholidostachys synanthera subsp. robusta (Trail) Henderson, comb. & stat. nov.

Basionym:— Calyptronoma robusta Trail (1876: 330) . Calyptrogyne robusta (Trail) Burret, (1930: 137) . Type:— BRAZIL. Amazonas: Camana, Rio Javari, 5 December 1874, J. Trail 961/CLXXXVI (holotype K!, isotypes BM!, NY!, P n.v.).

Stems 2.6(1.0–6.0) m long. Leaf rachises 74.1(48.0–91.0) cm long; pinnae7(4–12) per side of rachis.

Distribution and habitat. From 0°34N’ – 6°28’S and 68°46’– 75°50’W in the western Amazon region of Colombia, Peru, and Brazil at 146(90–200) m elevation in lowland rainforest (Fig. 6).