One stellate flower and six buds on one 51-cm, branched inflorescence; on a plant 79cm tall, mounted on a tree fern slab; sepals and petals tips pinched distally, lavender-pink; lip bright lavender-pink, white on center of midlobe, keels darker lavender-pink; column white, blushed pink, anther cap blushed pink, light green centrally; substance firm; texture crystalline; good form and color on this species, endemic to Brazil; awarded as Pseudolaelia irwiniana; SITF determined it to be Pseudolaelia corcovadensis (November 2018).

From Arnold Gum who has challenged this: The plant listed as Pseudolaelia corcovadensis 'Memoria Luis Rivero' CHM is most likely Pseudolaelia geraensis. I refer you to plates 74 and 78 in the attached field guide. Pseudolaelia cipoensis (plate 13) is also similar. Pseudolaelia corcovadensis 'Karen' appears to be correctly identified. Note that there are notable differences in the column width/wings, the side lobes (downswept versus upswept) and the number and extent of the keels/calli between corcovadensis and geraensis. I have enclosed a copy of the field guide for Pseudolaelia, "O genero Pseudolaelia'" by Luiz Menini Neto, Rafaela Campostrini Forzaa & Cassio van den Berg. I think the lip differences are pretty clear. Looking at the field guide, I also suspect, based on what appear to be intermediate forms pictured in the field guide, that there may be natural hybridization, perhaps even a hybrid swarm going, on similar to what we see with Myrmecophila brysiana/exaltata/christiansonii in the Yucatan and/or Tolumnia pulchella in Jamaica.