Polystachya-subdiphylla-2021-09-28***Confirmed as Polystachya subdiphylla (Oct 2021); matches the original Summerhayes description in the 1942 Botanical Museum Leaflets; characteristics include well-developed sheaths with articulation well removed from the apex of the pseudobulbs and dried sheath bases that remain attached when the blades are shed; an abbreviated rachis with a long peduncle containing only three or four white flowers with red-marked lips; this plant also matches the description in Cribb's Flora of Tropical East Africa.***